Power and Grounding Components P42
Name | Location | Locator View | Connector End View |
|---|---|---|---|
A/C Compressor Clutch | At the front left side of the engine | HVAC Component Views in HVAC Systems with A/C-Manual | HVAC Connector End Views in HVAC Systems with A/C-Manual |
A/C Compressor High Pressure Cut-Off Switch | At the rear of the A/C compressor | HVAC Component Views in HVAC Systems with A/C-Manual | HVAC Connector End Views in HVAC Systems with A/C-Manual |
A/C Compressor Refrigerant Pressure Switch | Located by the body builder | -- | HVAC Connector End Views in HVAC Systems with A/C-Manual |
A/C Compressor Relay | In the engine compartment, on the bulkhead, under the battery junction block | HVAC Component Views in HVAC Systems with A/C-Manual | HVAC Connector End Views in HVAC Systems with A/C-Manual |
Accessory Junction Block (School Bus) | School bus provision located by the body builder | -- | -- |
Auxiliary Engine Coolant Fan A/C Pressure Switch (Diesel) | In the A/C compressor high pressure line (body builder installed) | -- | Cooling System Connector End Views in Engine Cooling |
Auxiliary Engine Coolant Fan Motor (Diesel) | In front of the radiator | Cooling System Component Views in Engine Cooling | Cooling System Connector End Views in Engine Cooling |
Backup Lamps Switch (Manual Trans) | On the upper left side of the transmission, near the middle | Lighting Systems Component Views in Lighting Systems | Lighting Systems Connector End Views in Lighting Systems |
Battery | On the right frame rail, to the rear of the engine | Engine Electrical Component Views in Engine Electrical | -- |
Battery Junction Block | On the forward left side of the engine bulkhead, above P100 | -- | |
Battery, Secondary (Diesel) | On the right frame rail, to the rear of the engine | Engine Electrical Component Views in Engine Electrical | -- |
Brake Pressure Differential Switch | Bolted to the brake pressure modulator valve, below the radiator, on the lower crossmember | Antilock Brake System Component Views in Antilock Brake System | Antilock Brake System Connector End Views in Antilock Brake System |
Brake/Transmission Shift Interlock (BTSI) Relay | Left interior bulkhead, on the relay bracket | Tilt Wheel/Column Component Views in Steering Wheel and Column - Tilt | Tilt Wheel/Column Connector End Views in Steering Wheel and Column - Tilt |
Brake/Transmission Shift Interlock (BTSI) Solenoid | On the lower portion of the steering column, below the column support bracket | Tilt Wheel/Column Component Views in Steering Wheel and Column - Tilt | Tilt Wheel/Column Connector End Views in Steering Wheel and Column - Tilt |
Camshaft Position Sensor | In the distributor, at the top rear of the engine | Engine Controls Component Views in Engine Controls | Engine Controls Connector End Views in Engine Controls |
Clutch Pedal Position Switch | Above the clutch pedal, at the right side of the steering column | Engine Controls Component Views in Engine Controls | Engine Controls Connector End Views in Engine Controls |
Cold Advance Solenoid, Engine Coolant Temperature Switch (MFI Diesel) | At the rear lower portion of the right cylinder head, near the exhaust manifold | Engine Controls Component Views in Engine Controls | Engine Controls Connector End Views in Engine Controls |
Crank Fuse (In-line) | On the upper right side of the steering column support | -- | |
Crankshaft Position Sensor | At the lower right front of the engine, behind the crankshaft balancer pulley | Engine Controls Component Views in Engine Controls | Engine Controls Connector End Views in Engine Controls |
Data Link Connector (DLC) | At the left side of the passenger compartment lower bulkhead, on the side of the relay bracket | ||
Daytime Running Lamps (DRL) Module | On the IP harness, located by the body builder | -- | Lighting Systems Connector End Views in Lighting Systems |
Daytime Running Lamps (DRL) Relay | Left interior bulkhead, on the relay bracket | Lighting Systems Component Views in Lighting Systems | Lighting Systems Connector End Views in Lighting Systems |
Electronic Brake Control Module (EBCM) | Below the radiator, on the lower crossmember | Antilock Brake System Component Views in Antilock Brake System | Antilock Brake System Connector End Views in Antilock Brake System |
Engine Coolant Level Switch (Diesel) | On the left side of the radiator surge tank, mounted above the radiator | Instrument Panel, Gages, and Console Component Views in Instrument Panel, Gauges and Console | Instrument Panel, Gages, and Console Connector End Views in Instrument Panel, Gauges and Console |
Engine Oil Pressure Gauge Sensor and Fuel Pump Switch | At the top rear of the engine block | Instrument Panel, Gages, and Console Component Views in Instrument Panel, Gauges and Console | Instrument Panel, Gages, and Console Connector End Views in Instrument Panel, Gauges and Console |
Engine Shut Off Solenoid (Diesel) | At the fuel injection pump, near the top front portion of the intake manifold | Engine Controls Component Views in Engine Controls | Engine Controls Connector End Views in Engine Controls |
Evaporative Emissions Canister Purge Valve | At the right center of the intake manifold | Engine Controls Component Views in Engine Controls | Engine Controls Connector End Views in Engine Controls |
Evaporative Emissions Canister Vent Valve (California Only) | Along the right frame rail, in front of the fuel tank, near the EVAP canister | Engine Controls Component Views in Engine Controls | Engine Controls Connector End Views in Engine Controls |
Fan Control Relay (Diesel) | Engine bulkhead relay bracket, under the battery junction block | Cooling System Component Views in Engine Cooling | Cooling System Connector End Views in Engine Cooling |
Fuel Heater (Diesel) | At the rear of intake manifold, part of the fuel/water separator (filter) | Engine Controls Component Views in Engine Controls | Engine Controls Connector End Views in Engine Controls |
Fuel Injection Pump Shut Off Solenoid (MFI Diesel) | At the fuel injection pump, near the top front portion of the intake manifold | Engine Controls Component Views in Engine Controls | -- |
Fuel Level Sensor (Diesel) | At the top center of the fuel tank | Instrument Panel, Gages, and Console Component Views in Instrument Panel, Gauges and Console | Instrument Panel, Gages, and Console Connector End Views in Instrument Panel, Gauges and Console |
Fuel Lift Pump (Diesel) | At the right frame rail below the secondary battery, along side the transmission | Engine Controls Component Views in Engine Controls | Engine Controls Connector End Views in Engine Controls |
Fuel Pump Module | At the top center of the fuel tank | Engine Controls Component Views in Engine Controls | Engine Controls Connector End Views in Engine Controls |
Fuel Pump Relay | In the engine compartment, on the bulkhead, under the battery junction block | Engine Controls Component Views in Engine Controls | Engine Controls Connector End Views in Engine Controls |
Fuel Solenoid Driver | At the fuel injection pump, near the top front portion of the intake manifold | Engine Controls Component Views in Engine Controls | Engine Controls Connector End Views in Engine Controls |
Generator | At the right front of the engine | Engine Electrical Component Views in Engine Electrical | Engine Electrical Connector End Views in Engine Electrical |
Glowplug Controller (Diesel) | At the rear of the left cylinder head | Engine Controls Component Views in Engine Controls | Engine Controls Connector End Views in Engine Controls |
Glowplug Relay | Left interior bulkhead, on the relay bracket | Engine Controls Component Views in Engine Controls | Engine Controls Connector End Views in Engine Controls |
Hazard Lamps Flasher | On the IP harness, located by the body builder | Lighting Systems Component Views in Lighting Systems | Lighting Systems Connector End Views in Lighting Systems |
Headlamps | In the forward lamps harness (body builder installed) | Lighting Systems Component Views in Lighting Systems | -- |
Headlamps Switch | On the IP harness, located by the body builder | -- | Lighting Systems Connector End Views in Lighting Systems |
Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1 | In the left exhaust pipe, in front of the catalytic converter | Engine Controls Component Views in Engine Controls | Engine Controls Connector End Views in Engine Controls |
Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2 | In the left exhaust pipe, behind the catalytic converter | Engine Controls Component Views in Engine Controls | Engine Controls Connector End Views in Engine Controls |
Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1 | In the right exhaust pipe, in front of the catalytic converter | Engine Controls Component Views in Engine Controls | Engine Controls Connector End Views in Engine Controls |
Heated Oxygen Sensor (HO2S) Bank 2 Sensor 2 | In the right exhaust pipe, behind the catalytic converter | Engine Controls Component Views in Engine Controls | Engine Controls Connector End Views in Engine Controls |
Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2 (4.3L) | In the exhaust pipe, behind the catalytic converter | Engine Controls Component Views in Engine Controls | Engine Controls Connector End Views in Engine Controls |
Horn Relay | Left interior bulkhead, on the relay bracket | Horn Component Views in Horns | Horn Connector End Views in Horns |
Horns | Body builder installed | Horn Component Views in Horns | Horn Connector End Views in Horns |
Ignition Coil | Mounted on a bracket above the top edge of the right cylinder head | Engine Controls Component Views in Engine Controls | Engine Controls Connector End Views in Engine Controls |
Ignition Control Module | Mounted on a bracket above the top edge of the right cylinder head, in front of the ignition coil | Engine Controls Component Views in Engine Controls | Engine Controls Connector End Views in Engine Controls |
Ignition Switch | On the lower right side of the steering column, below the support bracket | ||
Instrument Cluster | Body builder installed | -- | Instrument Panel, Gages, and Console Connector End Views in Instrument Panel, Gauges and Console |
IP Fuse Block | Located by the body builder | ||
IP Lamps Dimmer Switch | On the IP harness, located by the body builder | -- | Lighting Systems Connector End Views in Lighting Systems |
Mass Air Flow Sensor | At the front right side, in the engine air induction system elbow, near the remote air cleaner | Engine Controls Component Views in Engine Controls | Engine Controls Connector End Views in Engine Controls |
Park and Turn Signal Lamps | In the forward lamps harness (body builder installed) | Lighting Systems Component Views in Lighting Systems | -- |
Park Brake Indicator Switch | Body builder installed | -- | Park Brake System Connector End Views in Park Brake |
Park/Neutral Position and Backup Lamps Switch | On the left side of the transmission, near the middle | Lighting Systems Component Views in Lighting Systems | Lighting Systems Connector End Views in Lighting Systems |
Powertrain Control Module (EFI Diesel) | At the left side of the drivers island, on the relay bracket | Engine Controls Component Views in Engine Controls | Powertrain Control Module Connector End Views in Engine Controls |
Remote Battery Access Terminal Block | At the rear of the right radiator core support panel | -- | |
Seat Belts Alarm Module | Attached to the IP fuse block | -- | Audible Warnings Connector End Views in Instrument Panel, Gauges and Console |
Sidemarker Lamps (provision for) | In the forward lamps harness (body builder installed) | Lighting Systems Component Views in Lighting Systems | -- |
Starter Relay | On the engine bulkhead relay bracket, under the battery junction block | Engine Electrical Component Views in Engine Electrical | Engine Electrical Connector End Views in Engine Electrical |
Starter Solenoid | On the starter, at the lower right side of the engine | Engine Electrical Component Views in Engine Electrical | -- |
Torque Converter Clutch (TCC) and Stoplamps Switch | Above the brake pedal, at the right side of the steering column | Lighting Systems Component Views in Lighting Systems | Lighting Systems Connector End Views in Lighting Systems |
Transmission Control Module (MFI Diesel w/ Auto Trans) | At the left side of the drivers island, on the relay bracket | Engine Controls Component Views in Engine Controls | Engine Controls Connector End Views in Engine Controls |
Transmission Output Speed Sensor | On the left side of the transmission, near the middle | Engine Controls Component Views in Engine Controls | Engine Controls Connector End Views in Engine Controls |
Transmission Range (TR) Lamp | In the transmission range selector, on the steering column | Lighting Systems Component Views in Lighting Systems | -- |
Turn Signal Switch | Part of the multifunction lever, on the steering column | Lighting Systems Component Views in Lighting Systems | Lighting Systems Connector End Views in Lighting Systems |
Vehicle Control Module (Gasoline) | At the left side of the radiator support | Engine Controls Component Views in Engine Controls | VCM Connector End Views in Engine Controls |
Vehicle Speed Sensor (Manual Trans) | At the left side of the transmission, near the middle | Engine Controls Component Views in Engine Controls | Engine Controls Connector End Views in Engine Controls |
Vehicle Speed Sensor Calibrator (Diesel) | At the left side of the drivers island, under the relay bracket | Engine Controls Component Views in Engine Controls | Engine Controls Connector End Views in Engine Controls |
Water In Fuel Indicator Sensor (Diesel) | Part of the fuel/water separator (filter), at the rear of the intake manifold | Engine Controls Component Views in Engine Controls | Engine Controls Connector End Views in Engine Controls |
Windshield Wiper Motor | Body builder installed | -- | -- |
Windshield Wiper/Washer Switch | Part of the multifunction lever, on the steering column | Wiper/Washer Component Views in Wipers/Washer Systems | Wiper/Washer Connector End Views in Wipers/Washer Systems |
C101 (EFI Diesel) | Engine harness to diesel harness, at the rear of the engine, above the intake manifold | ||
C102 | Engine harness to generator harness, at the right front of engine, below the generator | ||
C105 | Engine harness to fuel injector harness, at the center of the intake manifold, behind the air intake | ||
C110 | Engine harness to ABS harness, at the front of the left frame rail, near the steering gear box | ||
C111 | Engine harness to ABS harness, at the front of the left frame rail, above the steering gearbox | ||
C200 | Engine harness to the IP harness, in the bulkhead, near P100 | ||
C203 | Engine harness to the IP harness, in the bulkhead, near P100 | ||
C205 | On the IP harness, located by the body builder | -- | -- |
C207 | IP harness to windshield wiper/washer pump motor harness, at the left side of the engine bulkhead, near the battery junction block | ||
C210 | IP harness to engine harness, on top of the steering column support | ||
C211 | IP harness to engine harness, on top of the steering column support | ||
C212 | Fog lamps provision for the body builder | -- | -- |
C213 | Door ajar switch signal provision for the body builder | -- | -- |
C300 | Engine harness to rear chassis harness, near the middle of the chassis, at the outside of the left frame rail | ||
C301 | Engine harness to transmission, on the left side of the transmission, near the middle | Automatic Transmission Electronic Component Views in Automatic Transmission - 4L80-E | Automatic Transmission Inline Harness Connector End View or to in Automatic Transmission - 4L80-E |
C400 | Rear chassis harness to taillamp harness, behind the fuel tank, near the left frame rail | ||
C401 | Rear chassis harness to fuel pump module harness, near the left frame rail, behind the fuel tank | ||
C402 | Rear chassis harness to EVAP canister vent valve solenoid extension harness, along the left frame rail, in front of the upper rear shock mount | -- | |
C403 | At the rear of the rear lamps harness, approximately 15 cm (6 in) from the conduit end labeled CHMSL | -- | -- |
G102 (Diesel with Manual Trans) | At the right front of the engine, near the generator bracket | -- | |
G102 (All Gasoline, Diesel with Auto Trans) | At the rear of the left cylinder head | -- | |
G104 | At the rear of the left cylinder head | -- | |
G105 | At the rear of the left cylinder head | -- | |
G106 | At the rear of the left cylinder head | -- | |
G108 (Diesel with Manual Trans) | On top of the thermostat housing | -- | |
G108 (All Gasoline, Diesel with Auto Trans) | At the rear of the left cylinder head | -- | |
G110 | At the front, on the left frame rail, above the steering gearbox | -- | |
G200 | Left interior bulkhead, near the relay bracket | -- | -- |
G400 | At the left frame rail, in front of the fuel tank | -- | |
G401 | Body builder installed | -- | |
P100 | Left bulkhead, left of the steering column | -- | |
R100 | In the engine harness, approximately 23 cm (9 in) from the breakout to the MAF and the IAT sensors | -- | -- |
R203 | In the engine harness, approximately 25 cm (10 in) from the PCM connector C3 | -- | -- |
S103 | In the forward lamps harness, approximately 110 cm (41 in) from the left lamps breakout, toward the right lamps breakout | -- | -- |
S107 (Diesel) | In the engine harness at the battery junction block, at the auxiliary engine coolant fan relay fusible link C4 | -- | -- |
S108 (Gasoline) | In the engine harness breakout for the injector connector C105, approximately 9 cm (3 in) from the main harness | -- | -- |
S108 (Diesel) | In the engine harness, approximately 22 cm (9 in) from P100 | -- | -- |
S110 (Gasoline) | In the engine harness, approximately 4 cm (2 in) from the breakout for C200, towards P100 | -- | -- |
S110 (Diesel) | In the engine harness, approximately 4 cm (2 in) from the ABS harness connectors C110 and C111, towards P100 | -- | -- |
S112 (MFI Diesel with Automatic Trans) | In the engine harness, approximately 16 cm (6 in) from the starter motor breakout | -- | -- |
S112 (MFI Diesel with Manual Trans/EFI Diesel) | In the engine harness, approximately 4 cm (2 in) from the starter motor breakout | -- | -- |
S112 (Gasoline) | In the engine harness, approximately 7 cm (3 in) from the breakout for C102 | -- | -- |
S113 | In the engine harness, at the starter solenoid interconnect fusible link C3 | -- | -- |
S114 | In the engine harness, at the starter solenoid interconnect fusible link C4 | -- | -- |
S116 (EFI Diesel) | -- | -- | |
S116 (MFI Diesel) | In the engine harness, approximately 5 cm (2 in) from the breakout for the cold advance solenoid, engine coolant temperature switch, toward C300 | -- | -- |
S116 (Gasoline) | In the engine harness, approximately 7 cm (2 in) from the breakout for C110 and C111, towards C200 | -- | -- |
S118 (MFI Diesel) | In the engine harness, approximately 15 cm (6 in) from the glowplug controller breakout, towards the generator | -- | -- |
S118 (EFI Diesel) | In the engine harness, approximately 4 cm (2 in) from the starter motor breakout, towards the right glowplugs | -- | -- |
S118 (Gasoline) | In the engine harness, at the left rear of engine, approximately 4 cm (2 in) from G102/G104 breakout, toward the bank 1 HO2S | -- | -- |
S124 | In the engine harness, on the end of D101, approximately 13 cm (5 in) from the A/C compressor high pressure cut-off switch breakout | -- | -- |
S125 | In the engine harness, on the end of D101, approximately 13 cm (5 in) from the A/C compressor high pressure cutoff switch breakout | -- | -- |
S128 | In the engine harness, at the battery junction block fusible link C2 | -- | -- |
S129 | In the engine harness, at the battery junction block fusible link C2 | -- | -- |
S130 | In the engine harness, at the battery junction block fusible link C3 | -- | -- |
S131 | In the engine harness, at the battery junction block fusible link C3 | -- | -- |
S132 (Gasoline) | In the engine harness, approximately 19 cm (8 in) from C200 breakout, towards the MAF sensor | -- | -- |
S132 (EFI Diesel) | In the engine harness, approximately 11 cm (4 in) from the breakout for C200 | -- | -- |
S133 (MFI Diesel) | In the engine harness, approximately 17 cm (7 in) from the breakout for C200 | -- | -- |
S133 (EFI Diesel) | In the engine harness, approximately 30 cm (12 in), forward from P100, toward the PCM | -- | -- |
S133 (Gasoline) | In the engine harness, approximately 8 cm (3 in) from the VCM breakout | -- | -- |
S134 | In the engine harness, 12 cm (5 in) from the breakout for connector C200, toward the VCM | -- | -- |
S138 (Gasoline) | In the engine harness, approximately 7 cm (3 in) from the TPS breakout, toward the ignition coil | -- | -- |
S139 (4.3L Gasoline) | In the engine harness breakout for the CMP sensor, approximately 3 cm (1 in) from the main harness | -- | -- |
S139 (5.7L Gasoline) | In the engine harness breakout for C105, approximately 18 cm (7 in) from the main harness | -- | -- |
S141/S142 (Resistor Splice) | In the engine harness, R100 splice, approximately 23 cm (9 in) from the breakout for the MAF and the IAT sensors | -- | -- |
S143 (MFI Diesel) | In the engine harness, approximately 17 cm (7 in) from P100 | -- | -- |
S143 (EFI Diesel) | In the engine harness, approximately 16 cm (6 in) from the A/C compressor clutch breakout, towards C200 | -- | -- |
S143 (Gasoline) | In the engine harness, approximately 6 cm (2 in) from the C200 breakout, towards the MAF sensor | -- | -- |
S144 (Gasoline) | In the engine harness, approximately 11 cm (4 in) from the C200 breakout, towards P100 | -- | -- |
S144 (Diesel) | In the engine harness, approximately 17 cm (7 in) from the A/C compressor relay | -- | -- |
S145 (Diesel) | In the engine harness, at the battery junction block fusible link C1 | -- | -- |
S145 (Gasoline) | In the engine harness, approximately 4 cm (1 in) from the breakout for C105, toward the ignition control module | -- | -- |
S146 (School Bus) | In the brake warning system harness, at the starter solenoid interconnect fusible link C5 | -- | -- |
S151 | In the engine harness, at the battery junction block fusible link | -- | -- |
S161 | In the ABS harness, approximately 15 cm (6 in) from the right wheel speed sensor breakout, toward C110 | -- | -- |
S168 (Diesel, Auto Trans) | In the engine harness, approximately 17 cm (7 in) from P100 | -- | -- |
S169 (Diesel) | In the engine harness, approximately 11 cm (4 in) from the breakout for the A/C compressor clutch | -- | -- |
S170 | In the engine harness, 22 cm (9 in) from the fuel pump relay connector | -- | -- |
S181 (EFI Diesel) | In the diesel assembly harness, approximately 20 cm (8 in) from connector C101, toward the fuel heater | -- | -- |
S182 (EFI Diesel) | In the diesel assembly harness, approximately 24 cm (9 in) from connector C101, toward the fuel heater | -- | -- |
S185 (EFI Diesel) | In the diesel assembly harness, approximately 14 cm (6 in) from the oil pressure gauge sensor breakout, toward the CKP sensor | -- | -- |
S201 (EFI Diesel) | In the IP side of the engine harness, approximately 16 cm (6 in) from the stoplamp switch, toward P100 | -- | -- |
S204 | In the IP harness, approximately 20 cm (8 in) from the fuse block breakout, towards C200 | -- | -- |
S205 | In the IP harness, approximately 4 cm (2 in) before the fuse block breakout, toward C200 | -- | -- |
S206 | In the IP harness, approximately 12 cm (5 in) before the fuse block breakout, toward C200 | -- | -- |
S207 | In the IP harness, approximately 40 cm (16 in) before the fuse block breakout, toward the instrument cluster connector | -- | -- |
S208 | In the IP harness headlamps switch breakout, approximately 8 cm (3 in) before the fuse block breakout, toward C200 | -- | -- |
S209 | In the IP harness, approximately 50 cm (20 in) before the fuse block breakout, toward the instrument cluster | -- | -- |
S218 | In the IP harness, approximately 28 cm (11 in) before the fuse block breakout, toward C200 | -- | -- |
S225 (EFI Diesel) | In the IP side of the engine harness, approximately 16 cm (6 in) from P100, toward the PCM | -- | -- |
S233 (EFI Diesel) | In the IP side of the engine harness, approximately 31 cm (12 in) from P100, toward the ignition switch | -- | -- |
S241/S242 (Resistor Splice) | In the IP side of the engine harness, at resistor R100, approximately 18 cm (8 in) from the PCM | -- | -- |
S401 (125 in, 133 in wheelbase; 110 in, 157 in with school bus) | In the rear lamps harness, approximately 45 cm (17 in) from C400 | -- | -- |
S401 (157 in wheelbase w/o school bus; 178 in with school bus) | In the rear lamps harness, approximately 100 cm (39 in) from C400 | -- | -- |
S406 | In the rear chassis harness, approximately 10 cm (4 in) from G400 | -- | -- |
Power and Grounding Components P32
Name | Location | Locator View | Connector End View |
|---|---|---|---|
A/C Compressor Clutch | At the front left side of the engine | HVAC Component Views in HVAC Systems with A/C-Manual | HVAC Connector End Views in HVAC Systems with A/C-Manual |
A/C Compressor High Pressure Cut-Off Switch | At the rear of the A/C compressor | HVAC Component Views in HVAC Systems with A/C-Manual | HVAC Connector End Views in HVAC Systems with A/C-Manual |
A/C Compressor Refrigerant Pressure Switch | Located by the body builder | -- | HVAC Connector End Views in HVAC Systems with A/C-Manual |
A/C Compressor Relay | On the right side of the driver's island | HVAC Component Views in HVAC Systems with A/C-Manual | HVAC Connector End Views in HVAC Systems with A/C-Manual |
Antilock Brake Indicator Relay (Export) | On the IP harness, located by the body builder | -- | Antilock Brake System Connector End Views in Antilock Brake System |
Auxiliary Engine Coolant Fan A/C Pressure Switch | In front of the radiator, on the right side of the auxiliary engine coolant fan | Cooling System Component Views in Engine Cooling | Cooling System Connector End Views in Engine Cooling |
Auxiliary Engine Coolant Fan Motor | At the front of the engine, in front of the radiator | Cooling System Component Views in Engine Cooling | Cooling System Connector End Views in Engine Cooling |
Battery | On the right frame rail, to the rear of the engine | Engine Electrical Component Views in Engine Electrical | -- |
Battery Junction Block | On the forward left side of the bulkhead, above P100 | -- | |
Battery, Secondary (Diesel) | On the right frame rail, to the rear of the engine | Engine Electrical Component Views in Engine Electrical | -- |
Brake Pressure Differential Switch | Bolted to the brake pressure modulator valve, below the radiator, on the lower crossmember | Antilock Brake System Component Views in Antilock Brake System | Antilock Brake System Connector End Views in Antilock Brake System |
Brake/Transmission Shift Interlock (BTSI) Relay | Mounted on top of the steering column support, at the driver's island | Tilt Wheel/Column Component Views in Steering Wheel and Column - Tilt | Tilt Wheel/Column Connector End Views in Steering Wheel and Column - Tilt |
Brake/Transmission Shift Interlock (BTSI) Solenoid | On the lower portion of the steering column, below the column support bracket | Tilt Wheel/Column Component Views in Steering Wheel and Column - Tilt | Tilt Wheel/Column Connector End Views in Steering Wheel and Column - Tilt |
Camshaft Position Sensor (Gas) | In the distributor, at the top rear of the engine | Engine Controls Component Views in Engine Controls | Engine Controls Connector End Views in Engine Controls |
Crankshaft Position (CKP) Sensor | At the lower right front of the engine, behind the crankshaft balancer pulley | Engine Controls Component Views in Engine Controls | Engine Controls Connector End Views in Engine Controls |
Cruise Control Module (Gas) | On the radiator support bracket, left and behind the VCM | Cruise Control Component Views in Cruise Control | Cruise Control Connector End Views in Cruise Control |
Cruise Control Switch | Part of the multifunction control lever, on the upper left side of the steering column | Cruise Control Component Views in Cruise Control | Cruise Control Connector End Views in Cruise Control |
Data Link Connector (DLC) | At the lower left side of the steering column, on the support bracket | Instrument Panel, Gages, and Console Component Views in Wiring Systems | Instrument Panel, Gages, and Console Connector End Views in Wiring Systems |
Daytime Running Lamps (DRL) Module | Attached to the IP harness, located by the body builder | -- | Lighting Systems Connector End Views in Lighting Systems |
Daytime Running Lamps (DRL) Relay | Mounted on top of the steering column support, at the driver's island | Lighting Systems Component Views in Lighting Systems | Lighting Systems Connector End Views in Lighting Systems |
Daytime Running Lamps (DRL) Relay 2 | On the forward lamps harness, located by the body builder | -- | Lighting Systems Connector End Views in Lighting Systems |
Diode Network | On the IP harness, located by the body builder | -- | Hydraulic Brake Connector End Views in Hydraulic Brakes |
Electronic Brake Control Module (EBCM) | Below the radiator, on the lower crossmember | Antilock Brake System Component Views in Antilock Brake System | Antilock Brake System Connector End Views in Antilock Brake System |
Engine Coolant Level Switch | On the right side of the radiator surge tank, mounted above the radiator | Instrument Panel, Gages, and Console Component Views in Instrument Panel, Gauges and Console | Instrument Panel, Gages, and Console Connector End Views in Instrument Panel, Gauges and Console |
Engine Oil Pressure Gauge Sensor and Fuel Pump Switch | At the top rear of the engine block | Instrument Panel, Gages, and Console Component Views in Instrument Panel, Gauges and Console | Instrument Panel, Gages, and Console Connector End Views in Instrument Panel, Gauges and Console |
Engine Shut Off Solenoid | At the fuel injection pump, near the top front portion of the intake manifold | Engine Controls Component Views in Engine Controls | Engine Controls Connector End Views in Engine Controls |
Evaporate Emissions Canister Purge Valve | At the left center of the intake manifold | Engine Controls Component Views in Engine Controls | Engine Controls Connector End Views in Engine Controls |
Fan Control Relay | On top of the steering column support, behind the steering column | Cooling System Component Views in Engine Cooling | Cooling System Connector End Views in Engine Cooling |
Fuel Heater (Diesel) | At the rear of the intake manifold, part of the fuel/water separator (filter) | Engine Controls Component Views in Engine Controls | Engine Controls Connector End Views in Engine Controls |
Fuel Level Sensor (Diesel) | At the top center of the fuel tank | -- | Instrument Panel, Gages, and Console Connector End Views in Instrument Panel, Gauges and Console |
Fuel Lift Pump (Diesel) | At the right frame rail, ahead of the fuel tank | Engine Controls Component Views in Engine Controls | Engine Controls Connector End Views in Engine Controls |
Fuel Pump (FP) Module (Gas) | At the top center of the fuel tank | Engine Controls Component Views in Engine Controls | Engine Controls Connector End Views in Engine Controls |
Fuel Pump (FP) Relay | On the right side of the driver's island | Engine Controls Component Views in Engine Controls | Engine Controls Connector End Views in Engine Controls |
Fuel Solenoid Driver | At the fuel injection pump, near the top front portion of the intake manifold | Engine Controls Component Views in Engine Controls | Engine Controls Connector End Views in Engine Controls |
Generator | At the right front of the engine | Engine Electrical Component Views in Engine Electrical | Engine Electrical Connector End Views in Engine Electrical |
Glowplug Controller | At the rear of the left cylinder head | Engine Controls Component Views in Engine Controls | Engine Controls Connector End Views in Engine Controls |
Glowplug Relay (Export) | Located by the body builder | -- | Engine Controls Connector End Views in Engine Controls |
Hazard Lamps Flasher | At the inner left side of the steering column support bracket | Lighting Systems Component Views in Lighting Systems | Lighting Systems Connector End Views in Lighting Systems |
Headlamps/Panel Dimmer Switch | On the IP harness, located by the body builder | -- | Lighting Systems Connector End Views in Lighting Systems |
Headlamps | In the forward lamps harness (body builder installed) | -- | -- |
Headlamps Switch | On the IP harness, located by the body builder | -- | Lighting Systems Connector End Views in Lighting Systems |
Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1 | In the left exhaust pipe, in front of the catalytic converter | Engine Controls Component Views in Engine Controls | Engine Controls Connector End Views in Engine Controls |
Heated Oxygen Sensor Bank 1 Sensor 2 | In the left exhaust pipe, behind the catalytic converter | Engine Controls Component Views in Engine Controls | Engine Controls Connector End Views in Engine Controls |
Heated Oxygen Sensor Bank 2 Sensor 1 | In the right exhaust pipe, in front of the catalytic converter | Engine Controls Component Views in Engine Controls | Engine Controls Connector End Views in Engine Controls |
Heated Oxygen Sensor Bank 2 Sensor 2 | In the right exhaust pipe, behind the catalytic converter | Engine Controls Component Views in Engine Controls | Engine Controls Connector End Views in Engine Controls |
Horn Relay | Mounted on top of the steering column support, at the driver's island | Horn Component Views in Horns | Horn Connector End Views in Horns |
Horns | Body builder installed | -- | Horn Connector End Views in Horns |
Ignition Coil (Gas) | At the top rear of the intake manifold, near the distributor | Engine Controls Component Views in Engine Controls | Engine Controls Connector End Views in Engine Controls |
Ignition Control Module (Gas) | On a bracket, at the top rear of the intake manifold, near the ignition coil | Engine Controls Component Views in Engine Controls | Engine Controls Connector End Views in Engine Controls |
Ignition Switch | On the lower right side of the steering column, below the support bracket | ||
Instrument Cluster | Body builder installed | -- | Instrument Panel, Gages, and Console Connector End Views in Instrument Panel, Gauges and Console |
IP Fuse Block | Located by the body builder | ||
IP Lamps Dimmer Switch | On the IP harness, located by the body builder | -- | Lighting Systems Connector End Views in Lighting Systems |
Mass Air Flow Sensor (Gas) | At the front right side, in the engine air induction system elbow, near the remote air cleaner | Engine Controls Component Views in Engine Controls | Engine Controls Connector End Views in Engine Controls |
Park Brake Actuator Position Switch | In the auto apply park brake component box, at the right frame rail, behind the transmission | Park Brake System Component Views in Park Brake | Park Brake System Connector End Views in Park Brake |
Park Brake Alarm | On the IP harness, located by the body builder | -- | Park Brake System Connector End Views in Park Brake |
Park Brake Alarm Relay | On the IP harness, located by the body builder | -- | Park Brake System Connector End Views in Park Brake |
Park Brake Pressure Indicator Switch | In the auto apply park brake component box, at the right frame rail, behind the transmission | Park Brake System Component Views in Park Brake | Park Brake System Connector End Views in Park Brake |
Park Brake Pressure Valve Solenoid | In the auto apply park brake component box, at the right frame rail, behind the transmission | Park Brake System Component Views in Park Brake | Park Brake System Connector End Views in Park Brake |
Park Brake Pull Button Relay | On the IP harness, located by the body builder | -- | Park Brake System Connector End Views in Park Brake |
Park Brake Pull Button Switch | Mounted to the IP | -- | Park Brake System Connector End Views in Park Brake |
Park Brake Pump Motor | In the auto apply park brake component box, at the right frame rail, behind the transmission | Park Brake System Component Views in Park Brake | Park Brake System Connector End Views in Park Brake |
Park Brake Pump Motor Relay | In the auto apply park brake component box, at the right frame rail, behind the transmission | Park Brake System Component Views in Park Brake | Park Brake System Connector End Views in Park Brake |
Park Brake Switch (w/o Auto Apply) | On the IP harness, located by the body builder | -- | -- |
Park/Neutral Position and Backup Lamps Switch | On the left side of the transmission, near the middle | Lighting Systems Component Views in Lighting Systems | Lighting Systems Connector End Views in Lighting Systems |
Park/Neutral Position (PNP) Switch Relay | Above the engine, mounted to the right side of the driver's island | Engine Controls Component Views in Engine Controls | Engine Controls Connector End Views in Engine Controls |
Power Brake Booster Fluid Flow Alarm | Provision installed by the body builder | -- | Hydraulic Brake Connector End Views in Hydraulic Brakes |
Powertrain Control Module (Diesel) | On the left side of the driver's island | Engine Controls Component Views in Engine Controls | Powertrain Control Module Connector End Views in Engine Controls |
Seat Belt and Lamps Alarm Module | Attached to the IP fuse block | -- | Audible Warnings Connector End Views in Instrument Panel, Gauges and Console |
Sidemarker Lamps (provision for) | In the forward lamps harness (body builder installed) | -- | -- |
Starter Relay | Above the engine, mounted to the right side of the driver's island | Engine Electrical Component Views in Engine Electrical | Engine Electrical Connector End Views in Engine Electrical |
Starter Solenoid | On the starter, at the lower right side of the engine | Engine Electrical Component Views in Engine Electrical | -- |
Stoplamps Switch | Above the brake pedal, at the right side of the steering column | Lighting Systems Component Views in Lighting Systems | Lighting Systems Connector End Views in Lighting Systems |
Torque Converter Clutch (TCC) and Stoplamps Switch | Above the brake pedal, at the right side of the steering column | Lighting Systems Component Views in Lighting Systems | Lighting Systems Connector End Views in Lighting Systems |
Transmission Output Speed Sensor | On the left side of the transmission, near the middle | Engine Controls Component Views in Engine Controls | Engine Controls Connector End Views in Engine Controls |
Transmission Range (TR) Lamp | In the transmission range selector, on the steering column | Lighting Systems Component Views in Lighting Systems | -- |
Turn Signal Switch | Part of the multifunction lever on the steering column | Lighting Systems Component Views in Lighting Systems | Lighting Systems Connector End Views in Lighting Systems |
Vehicle Control Module (Gas) | Mounted to the top of the radiator support | Engine Controls Component Views in Engine Controls | VCM Connector End Views in Engine Controls |
Vehicle Speed Sensor Calibrator (Diesel) | Above the accelerator, at the right side of the brake pedal support | Engine Controls Component Views in Engine Controls | Engine Controls Connector End Views in Engine Controls |
Wastegate Solenoid (Diesel) | Above the rear of the left cylinder head, near the glowplug controller | Engine Controls Component Views in Engine Controls | Engine Controls Connector End Views in Engine Controls |
Water In Fuel Indicator Sensor (Diesel) | Part of the fuel/water separator (filter) at the rear of the intake manifold | Engine Controls Component Views in Engine Controls | Engine Controls Connector End Views in Engine Controls |
Windshield Wiper Motor | Body builder installed | -- | -- |
Windshield Wiper Pulse Control Module | Tie strapped to the engine wiring harness, at the driver's island, under the steering column support | Wiper/Washer Component Views in Wipers/Washer Systems | Wiper/Washer Connector End Views in Wipers/Washer Systems |
C101 | Engine harness to diesel harness, at the left rear of the engine, above the intake manifold | ||
C103 | Engine harness to park brake extension harness, on top of the transmission | ||
C107 | Engine harness to fuel injector harness, at the left rear of the engine, near the distributor | ||
C110 | Engine harness to ABS harness, at the front of the left frame rail, near the steering gearbox | ||
C111 | Engine harness to ABS harness, at the front of the left frame rail, near the brake master cylinder | ||
C115 (Gas) | Internal to the engine harness, 10 cm (4 in) from the breakout for the bank 2 sensor 1 HO2S, toward the transmission | -- | -- |
C117 (Gas) | Internal to the engine harness, 10 cm (4 in) from the breakout for the generator connector | -- | -- |
C200 | Engine harness to IP harness, at the top front of the steering column support, near the park brake pull button switch | ||
C203 | Engine harness to body builder provision harness, on top of the steering column support, at the left side | ||
C204 | Marker lamps provision for the body builder | -- | -- |
C207 | Engine harness to windshield wiper harness, at the left side of the engine bulkhead, near the battery junction block | ||
C209 | Door ajar switch provision for the body builder | -- | -- |
C210 | Dome lamp provision for the body builder | -- | |
C212 | Park accessory provision for the body builder | -- | -- |
C213 | Fog lamps provision for the body builder | -- | -- |
C301 | Engine harness to the transmission, on the left side of the transmission, near the middle | Automatic Transmission Electronic Component Views in Automatic Transmission - 4L80-E | Automatic Transmission Inline Harness Connector End View or to in Automatic Transmission - 4L80-E |
C303 | Park brake extension harness to park brake harness, above the auto apply park brake component box, at the right frame rail behind the transmission | ||
C400 | Rear chassis harness to taillamps harness, behind the fuel tank, near the left frame rail | -- | |
C401 | On the left frame rail, near the rear lamp harness | -- | |
C402 | Rear chassis harness to fuel lift pump harness, along the left front rail, in front of the fuel tank | -- | |
C403 (Export) | Rear chassis harness to taillamps harness, behind the fuel tank, near the left frame rail | -- | |
C404 | Mid-vehicle clearance lights provision for the body builder | -- | -- |
C405 | Center high mounted stoplamp (CHMSL) provision for the body builder | -- | -- |
G101 | Body builder installed | -- | -- |
G102 | Body builder installed | -- | -- |
G103 (Gas) | At the rear of the right cylinder head | -- | |
G104 | At the rear of the right cylinder head | -- | |
G105 | Negative battery cable ground, at the rear of the right cylinder head | -- | |
G106 | Braided strap from the rear left of the engine to the frame rail | -- | |
G107 | Body builder installed | -- | -- |
G108 | On top of the thermostat housing | -- | |
G110 | At the front, on the left frame rail, above the steering gearbox | -- | |
G200 | Mounted to the top front of the steering column support plate | -- | -- |
G350 | In the auto apply park brake component box, at the right frame rail, behind the transmission | -- | -- |
G400 | At the left frame rail, in front of the fuel tank | -- | -- |
G401 | Body builder installed | -- | -- |
G402 | Body builder installed | -- | -- |
P100 | Main wiring pass through at the bulkhead | -- | |
R101 | In the engine harness, 7 cm (3 in) from the breakout for the engine coolant fan motor connector, toward the A/C compressor relay | -- | -- |
R102 (Gas) | In the engine harness, 20 cm (8 in) from the breakout for the ABS harness connectors | -- | -- |
R102 (Diesel) | In the IP side of the engine harness, 32 cm (12 in) from P100 in the breakout for the PCM | -- | -- |
R204 (Diesel) | In the IP side of the engine harness, 32 cm (13 in) from P100, toward the PCM | -- | -- |
S101 (Diesel) | In the engine harness, 16 cm (7 in) from the breakout for the auxiliary engine coolant fan motor, toward P100 | -- | -- |
S101 (Gas) | In the engine harness, 20 cm (8 in) from the breakout for C100 and C207, toward the auxiliary engine coolant fan motor | -- | -- |
S104 | In the engine harness, 15 cm (6 in) to the breakout for ABS connectors C110 and C111, going away from passthrough P100 | -- | -- |
S105 | In the engine harness, 4 cm (2 in) from the breakout for the heated oxygen sensors, toward the ignition control module breakout | -- | -- |
S106/S107 (Resistor Splice) | Resistor splice for R101 in the engine harness, 7 cm (3 in) from the breakout for the auxiliary engine coolant fan motor connector, toward the A/C compressor relay | -- | -- |
S114 (Diesel) | In the engine harness, 19 cm (8 in) from the breakout for the fuel pump relay, toward the generator | -- | -- |
S114 (Gas) | In the engine harness, 44 cm (17 in) from the breakout for the A/C compressor clutch and the EGR valve, toward the VCM | -- | -- |
S115 (Diesel) | In the engine harness, 35 cm (13 in) from P100, in the engine compartment | -- | -- |
S115 (Gas) | In the engine harness, 14 cm (6 in) from the breakout for C100 and C207, going away from passthrough P100 | -- | -- |
S116 (Gas) | In the engine harness, 32 cm (12 in) from the breakout for C100 and C207, going away from passthrough P100 | -- | -- |
S121 (Gas) | In the engine harness, 28 cm (11 in) from the breakout for the A/C compressor clutch and the EGR valve, toward the breakout for the camshaft position sensor | -- | -- |
S122 | At diode D101 in the engine harness, 25 cm (10 in) from the A/C compressor clutch connector | -- | -- |
S124 (Gas) | In the engine harness, 11 cm (4 in) from the breakout for the cruise control module, toward the starter relay | -- | -- |
S125 (Diesel) | In the engine harness, 5 cm (2 in) from the breakout for the generator, toward C110 and C111 | -- | -- |
S125 (Gas) | In the engine harness, 5 cm (2 in) from the breakout for the EGR, toward the injector harness | -- | -- |
S126 (Gas) | In the engine harness, 18 cm (7 in) from the breakout for the A/C compressor clutch and the EGR valve, toward the VCM | -- | -- |
S132/S140 (Resistor Splice) | At resistor R102 in the engine harness breakout for the PCM, 20 cm (8 in) from the main harness, toward the fuel pump relay | -- | -- |
S133 (Gas) | In the engine harness, 11 cm (4 in) from the breakout for the A/C compressor clutch and the EGR valve, toward the VCM | -- | -- |
S135 (Diesel) | In the engine harness, 7 cm (3 in) from the breakout for ground G104, toward the generator | -- | -- |
S135 (Gas) | In the engine harness breakout for the ignition coil, 7 cm (3 in) from the main harness | -- | -- |
S143 (Diesel) | In the engine harness, 2 cm (1 in) from the breakout for C100 and C207, toward the auxiliary engine coolant fan motor | -- | -- |
S143 (Gas) | In the engine harness, 5 cm (2 in) from the breakout for the cruise control module, toward the VCM | -- | -- |
S150 (Diesel) | In the engine harness, 14 cm (6 in) from P100, toward C100 and C207 | -- | -- |
S150 (Gas) | In the engine harness, 4 cm (2 in) from the breakout for the battery junction block, toward C100 and C207 | -- | -- |
S158 (Gas) | In the fuel injection assembly harness | -- | -- |
S159 (Gas) | In the fuel injection assembly harness | -- | -- |
S167 | In the ABS harness, 19 cm (7 in) from the breakout for the brake pressure differential switch | -- | -- |
S168 (Diesel) | In the engine harness, 4 cm (2 in) from the breakout for C207, toward the engine | -- | -- |
S169 (Diesel) | In the engine harness, 8 cm (4 in) from the breakout for the engine coolant level switch and the auxiliary engine coolant fan motor connector | -- | -- |
S169 (Gas) | In the engine harness, 38 cm (15 in) from the breakout for C100 and C207, going away from passthrough P100 | -- | -- |
S174 | In the forward lamps harness, 18 cm (7 in) from the breakout for the right headlamp, toward the DRL relay | -- | -- |
S181 | In the diesel assembly harness, 20 cm (8 in) from connector C101, toward the fuel heater | -- | -- |
S182 | In the diesel assembly harness, 24 cm (9 in) from connector C101, toward the fuel heater | -- | -- |
S185 | In the diesel assembly harness, 14 cm (6 in) from the oil pressure gauge sensor breakout, toward the CKP sensor | -- | -- |
S201 | In the IP harness, 10 cm (4 in) from C200, toward the IP fuse block | -- | -- |
S204 | In the IP harness, 26 cm (10 in) from the horn relay breakout, toward P100 | -- | -- |
S206 | In the IP harness, 25 cm (10 in) from the instrument cluster connector | -- | -- |
S207 | In the IP harness, 20 cm (8 in) from the engine harness connector C200 and 4 relay sockets | -- | -- |
S210 (Export) | In the IP harness, 4 cm (1 in) from the dimmer switch and the IP cluster connector breakout, toward C200 and the horn relay | -- | -- |
S211 | In the IP harness, 6 cm (2 in) from the dimmer switch and the IP cluster connector breakout, toward the IP fuse block | -- | -- |
S212 | In the IP harness, 10 cm (4 in) from the breakout for the instrument cluster connector, toward the IP fuse block | -- | -- |
S213 | In the IP harness, 15 cm (6 in) from the harness in the breakout for the headlamp switch connector | -- | -- |
S214 | In the IP harness, 18 cm (7 in) from the breakout for the IP lamps dimmer switch and the instrument cluster connector, toward the IP fuse block | -- | -- |
S215 | In the IP harness, 35 cm (14 in) from the IP fuse block | -- | -- |
S216 | In the IP harness, 25 cm (10 in) from the IP fuse block | -- | -- |
S217 | In the IP harness, 20 cm (8 in) from the IP fuse block | -- | -- |
S224 | In the IP side of the engine harness, 16 cm (6 in) from P100, toward C200 | -- | -- |
S228 | In the IP side of the engine harness, 28 cm (11 in) from P100 | -- | -- |
S229 | In the IP side of the engine harness, 3 cm (1 in) from the breakout for the hazard flasher and the wiper switch connector | -- | -- |
S231 | In the IP side of the engine harness, 7 cm (4 in) from the turn signal switch connector breakout | -- | -- |
S232 | In the IP side of the engine harness, 20 cm (8 in) from P100 | -- | -- |
S235 (Diesel) | In the IP side of the engine harness, 23 cm (9 in) from P100, toward C200 | -- | -- |
S235 (Gas) | In the IP side of the engine harness, 26 cm (10 in) from P100, toward C200 | -- | -- |
S364 | In the auto apply park brake harness, 4 cm (1 in) from the breakouts for the park brake pump motor and the park brake pump relay connectors | -- | -- |
S400 (Diesel) | In the rear chassis harness, 10 cm (4 in) from the breakout for G400, toward the fuel level sensor | -- | -- |
S400 (Gas) | In the rear chassis harness, 10 cm (4 in) from the breakout for G400, toward the fuel pump module | -- | -- |
S401 | In the rear lamps harness, 45 cm (17 in) from C400 | -- | -- |
