Name | Location | Locator View | Connector End View |
|---|---|---|---|
Accelerator Pedal (AP) (GM Diesel) | To the left of center, on the lower bulkhead | ||
Automatic Transmission (AT) Modulator (GM Diesel) | On the lower left side of the transmission | ||
Automatic Transmission (AT) Modulator Relay | In the flasher/ relay center, position 2-B | -- | -- |
Automatic Transmission (AT) Selector Control | On the left side of the IP, to the right of the steering column, on the center accessory trim plate | ||
Clutch Pedal Position (CPP) Switch (GM Diesel) | On the clutch pedal bracket | ||
Crankshaft Position (CKP) Sensor (GM Diesel) | On the front of the engine, on the lower left side, on the timing cover | ||
Data Link Connector (DLC) (GM Diesel) | Under the left side of the IP | Data Link Communications Component Views | |
Data Link Connector (DLC) (GM Diesel) | Under the left side of the IP | ||
C1 (11 cavities) | In the IP harness, to the DIC | ||
C2 (11 cavities) | In the IP harness, to the DIC | ||
Driver Information Center (DIC) (GM Diesel) | On the left side of the IP, part of the instrument panel cluster (IPC) | -- | |
C1 (11 cavities) | In the IP harness, to the DIC | ||
C2 (11 cavities) | In the IP harness, to the DIC | ||
Electronic Brake Control Module (EBCM) (ABS-Air) | On a bracket, on the left side, upper exterior bulkhead, on the top of the air brake application valve | -- | |
Electronic Fuel Injection Pump (GM Diesel) | On the top of the engine, at the center of the front of the engine | -- | |
Engine Coolant Temperature (ECT) Gauge | On the left side of the IP, part of the instrument panel cluster (IPC) | -- | |
Engine Coolant Temperature (ECT) Gauge Sensor (GM Diesel) | On the left side of the left cylinder head, at the front of the cylinder head | ||
Engine Coolant Temperature (ECT) Sensor (GM Diesel) | On the top of the engine, on the right front of the engine, in the thermostat housing | ||
Engine Oil Pressure (EOP) Gauge | On the left side of the IP, part of the instrument panel cluster (IPC) | -- | |
Engine Oil Pressure (EOP) Gauge Sensor and Fuel Pump (FP) Switch (GM Diesel) | On the top of the engine, on the center of the engine | ||
Engine Oil Pressure (EOP) Gauge Sensor and Fuel Pump (FP) Switch (GM Diesel) | On the top of the engine, on the center of the engine | ||
Engine Shutoff Solenoid (GM Diesel) | On the top of the engine, on the center front of the engine, part of the electronic fuel injection pump assembly | ||
Fuel Solenoid Driver (GM Diesel) | On the top of the engine, on the center of the front of the engine, part of the electronic fuel injection pump assembly | ||
Fusible Link A (gray) (GM Diesel) | In the glow plug harness, on the top right side of the engine, at the glow plug relay | -- | |
Fusible Link B (gray) (GM Diesel) | In the glow plug harness, on the top right side of the engine, at the glow plug relay | -- | |
Fusible Link C (rust) (GM Diesel) | In the glow plug harness, on the top of the center of the engine, at the glow plug relay connector C3 | -- | |
Fusible Link D (blue) (GM Diesel) | In the glow plug harness, on the left side of the engine, at glow plug 7 | -- | |
Fusible Link E (blue) (GM Diesel) | In the glow plug harness, on the left side of the engine, at glow plug 5 | -- | |
Fusible Link F (blue) (GM Diesel) | In the glow plug harness, on the right side of the engine, at glow plug 8 | -- | |
Fusible Link G (blue) (GM Diesel) | In the glow plug harness, on the right side of the engine, at glow plug 6 | -- | |
Fusible Link H (blue) (GM Diesel) | In the glow plug harness, on the right side of the engine, at glow plug 4 | -- | |
Fusible Link J (blue) (GM Diesel) | In the glow plug harness, on the left side of the engine, at glow plug 1 | -- | |
Fusible Link K (blue) (GM Diesel) | In the glow plug harness, on the left side of the engine, at glow plug 3 | -- | |
Fusible Link L (blue) (GM Diesel) | In the glow plug harness, on the left side of the engine, at glow plug 2 | -- | |
Fusible Link N (rust) (Diesels) | In the engine harness, to the generator B+ stud | -- | -- |
Fusible Link S (blue) (GM Diesel) | In the engine harness, in the main harness, approximately 23 cm (9 in) from the breakouts to the generator and starter solenoid, toward the IP | -- | -- |
Generator (GM Diesel) | On the upper right side of the engine | -- | |
C1 (ring terminal) | In the engine harness, to the generator Bat terminal | -- | |
Glow plug 1, 3, 5 and 7 (GM Diesel) | On the left side of the engine | -- | |
Glow Plug 2, 4, 6 and 8 (GM Diesel) | On the right side of the engine | -- | |
Glow Plug Relay (GM Diesel) | On the top of the engine, on the left rear side of the engine | ||
C3 (4 cavities) | In the GM diesel engine harness, to the glow plug relay | ||
HI IDLE Switch (GM Diesel) | On the left side of the IP, to the right of the steering column, on the left IP accessory trim plate | ||
Ignition Relay | In the mini-relay center, position A | -- | |
Ignition Switch | On the top side of the lower steering column | -- | |
Injection Timing Stepper (ITS) Motor (GM Diesel) | On the top center of the engine, on the front of the engine, part of the electronic fuel injection pump assembly | ||
Instrument Panel Cluster (IPC) | In the left side of the IP | ||
Intake Air Temperature (IAT) Sensor (GM Diesel) | On the top of the engine, on the right front of the engine, in the intake manifold | ||
MaxiFuse® Block 1 | On the right side of the IP, under the access cover, on the left side of the MaxiFuse® block/ mini-relay center | -- | |
MaxiFuse® Block 2 | On the right side of the IP, under the access cover, on the center of the MaxiFuse® block/ mini-relay center | -- | |
Mini-Relay Center | On the right side of the IP, under the access cover, on the right side of the MaxiFuse® block/ mini-relay center | -- | |
Multifunction Alarm Module (MFAM) (GM Diesel) | In the center of the IP, behind the right access panel | ||
Powertrain Control Module (PCM) (GM Diesel) | Under the right side of the IP | -- | |
C1 (32 cavities) | In the engine harness, to the PCM | ||
C2 (24 cavities) | In the engine harness, to the PCM | ||
C3 (32 cavities) | In the engine harness, to the PCM | ||
Primary Fuel Heater (GM Diesel) | On the inboard side of the right frame rail, part of the fuel filter assembly | ||
Primary Water-In-Fuel Sensor (GM Diesel) | On the inboard side of right frame, forward, part of the primary fuel/ water separator (fuel filter) | ||
Radiator Shutter Control Valve Relay (GM Diesel) | On the top center, left side of the engine | ||
Secondary Fuel Heater (GM Diesel) | On the inboard side of the right frame rail, part of the fuel filter assembly | ||
Secondary Water-In-Fuel Sensor (GM Diesel) | On the inboard side of the right frame rail, behind the primary, part of the secondary fuel/ water separator (fuel filter) | ||
Speedo Adapter | Under the right side of the IP | ||
Speedometer | On the left side of the IP, part of the instrument panel cluster (IPC) | -- | |
Turbo Pressure Sensor (GM Diesel) | On the top of the engine, on the right front of the engine, in the intake manifold | ||
Turbocharger (TC) Wastegate Regulating Solenoid Valve | On the top of the engine, on the right front of the engine, on the intake manifold | ||
Vehicle Speed Sensor (VSS) (GM Diesel) | On the lower right side of the transmission tailshaft housing | ||
Voltmeter | On the left side of the IP, part of the instrument panel cluster (IPC) | -- | |
C100 (2 cavities) (GM Diesel) | In the GM diesel engine harness, to the glow plug harness, on the top left side of the engine | -- | |
C106A (1 cavity) (Cat® Diesel) | In the engine harness, to the engine harness, near the starter solenoid breakout | -- | |
C106A (1 cavity) (Cat® Diesel and HD Starter w/ Overcrank Protection) | In the starter motor overcrank protection jumper harness, to the engine harness, near the starter solenoid breakout | -- | |
C108 (15 cavities) (GM Diesel) | In the engine harness, to the GM diesel engine harness, on the top left center of the engine, forward | -- | |
C109 (8 cavities) (GM Diesel) | In the engine harness, to the GM diesel engine harness, on the top left center of the engine, in the center | -- | |
C110 (10 cavities) (GM Diesel) | In the engine harness, to the GM diesel engine harness, on the top left center of the engine, in the center | -- | |
C112 (3 cavities) (GM Diesel) | In the engine harness, to the radiator shutter jumper harness, on the top of the left side of the engine, at the rear | -- | |
C116 (5 cavities) (GM Diesel) | In the engine harness, to the fuel tank harness, at the right frame rail, near the starter | -- | |
C119 (7 cavities) (GM Diesel) | In the ABS-hydraulic jumper harness, to the ABS-hydraulic chassis harness, in the engine compartment, on the left side of the bulkhead | -- | |
C126 (6 cavities) | In the GM diesel engine harness, to the electronic noise filter extension harness, on the top center, at the front of the engine | -- | |
C200 (56 cavities) (GM Diesel) | In the IP harness, to the engine harness, under the right side of the IP | -- | |
C208 (8 cavities) (GM Diesel) | In the engine harness, to the IP harness, under right center of the IP | -- | |
C209 (10 cavities) (GM Diesel) | In the engine harness, to the IP harness, under the right center of the IP | -- | |
C409 (8 cavities) (GM Diesel) | In the engine harness, to the transmission harness, on the left side of the engine, at the bellhousing | -- | |
G101 (Cat® Diesel) | From the starter motor end ground stud (G101) to the right frame rail ground (G100) | -- | -- |
G101 (GM Diesel w/ Left Fuel Tank and Dual Batteries) | From the negative battery cable at the right frame rail | -- | -- |
G102 (GM Diesel) | From the engine harness, to the right side of the top front of the engine | -- | -- |
G117 (GM Diesel) | The generator ground strap, from the right side of the engine (G117) to the generator (G119) | -- | -- |
G119 (GM Diesel) | The engine harness and generator ground strap, from the right side of the engine (G117) to the generator (G119) | -- | -- |
P100 | On the right side of the bulkhead | -- | -- |
P102 | On the right side of the bulkhead | -- | -- |
P103 | On the left side of the bulkhead | -- | -- |
S130 (GM Diesel) | In the engine harness, approximately 42 cm (16.5 in) to the rear of the power brake pump motor breakout | -- | -- |
S131 (GM Diesel) | In the engine harness, approximately 7 cm (2.8 in) from the glow plug relay breakout, toward the power brake booster pump motor | -- | -- |
S132 (GM Diesel) | In the engine harness, approximately 10 cm (3.9 in) to the rear of the glow plug relay breakout, toward the bulkhead | -- | -- |
S133 (GM Diesel) | In the engine harness, approximately 22 cm (8.7 in) to the rear of the power brake booster pump motor breakout
| -- | -- |
S134 (GM Diesel) | In the engine harness, approximately 16 cm (6.3 in) to the rear of the power brake booster pump motor breakout | -- | -- |
S135 (GM Diesel) | In the engine harness, approximately 4 cm (1.6 in) to the rear of the power brake booster pump motor breakout | -- | -- |
S136 (GM Diesel) | In the engine harness, to the rear of the generator, at the Bat terminal fusible link | -- | -- |
S138 (GM Diesel) | In the engine harness, approximately 20 cm (7.9 in) toward the forward lamps harness connector from the fuel tank harness | -- | -- |
S141 | In the engine harness, approximately 17 cm (6.7 in) throttle position (TP), from generator harness breakout | -- | -- |
S142 (Gasoline) | In the engine harness, approximately 4 cm (1.6 in) from the throttle position (TP) sensor, toward the breakout | -- | -- |
S142 (GM Diesel) | In the engine harness, approximately 11 cm (4.3 in) from the power brake booster pump motor breakout, toward the brake fluid switches | -- | -- |
S146 (GM Diesel) | In the radiator shutter jumper harness, approximately 45 cm (17.7 in) from the radiator shutter | -- | -- |
S151 (GM Diesel) | In the glow plug harness, on the top of the right side of the engine, approximately 16 cm (6.3 in) from the glow plug relay | -- | -- |
S152 (GM Diesel) | In the glow plug harness, on the top of the right side of the engine, approximately 16 cm (6.3 in) from the glow plug relay | -- | -- |
S155 (GM Diesel) | In the glow plug harness, on the top of the left side of the engine, approximately 16 cm (6.3 in) from glow plugs 1 and 3 | -- | -- |
S156 (GM Diesel) | In the glow plug harness, on the top of the left side of the engine, approximately 16 cm (6.3 in) from glow plugs 5 and 7 | -- | -- |
S160 (GM Diesel) | In the glow plug harness, on the top of the right side of the engine, approximately 16 cm (6.3 in) from glow plugs 2 and 4 | -- | -- |
S161 (GM Diesel) | In the glow plug harness, on the top of the right side of the engine, approximately 16 cm (6.3 in) from glow plugs 6 and 8 | -- | -- |
S163 (GM Diesel) | In the GM diesel engine harness, approximately 8 cm (3.1 in) from the engine shutoff solenoid (electronic fuel injection pump) connector | -- | -- |
S164 (GM Diesel) | In the GM diesel engine harness, approximately 8 cm (3.1 in) from the fuel solenoid driver (electronic fuel injection pump) connector | -- | -- |
S165 (GM Diesel) | In the GM diesel engine harness, approximately 27 cm (10.6 in) from the crankshaft position (CKP) sensor connector | -- | -- |
S166 (GM Diesel) | In the GM diesel engine harness, approximately 6 cm (2.4 in) from the fuel temperature sensor, toward the main engine harness connectors | -- | -- |
S167 (GM Diesel) | In the GM diesel engine harness, approximately 11 cm (4.3 in) from the electronic noise filter extension harness connector C126 | -- | -- |
S168 (GM Diesel) | In the GM diesel engine harness, approximately 2 cm (0.8 in) from the electronic noise filter extension harness, toward the glow plug relay | -- | -- |
S203 (GM Diesel) | In the IP harness, approximately 22 cm (8.7 in) to the right of the data link connector (DLC) breakout | -- | -- |
S210 | In the IP harness, approximately 4 cm (1.6 in) to the right of the hazard warning switch breakout | -- | -- |
S214 | In the IP harness, approximately 25 cm (9.8 in) to the right of the data link connector (DLC) breakout | -- | -- |
S219 | In the IP harness, approximately 17 cm (6.7 in) to the right of the data link connector (DLC) breakout | -- | -- |
S220 | In the IP harness, approximately 15 cm (5.9 in) to the right of the data link connector (DLC) breakout | -- | -- |
S221 | In the IP harness, approximately 12 cm (4.7 in) to the right of the data link connector (DLC) breakout | -- | -- |
S222 | In the IP harness, approximately 11 cm (4.3 in) to the right of the data link connector (DLC) breakout | -- | -- |
S228 (GM Diesel) | In the IP harness, approximately 11 cm (4.3 in) to the right of the instrument panel cluster (IPC) connector breakout | -- | -- |
S229 (Cat® Diesel) | In the IP harness, approximately 8 cm (3.1 in) to the right of the instrument panel cluster (IPC) connector breakout | -- | -- |
S230 | In the IP harness, approximately 4 cm (1.6 in) to the right of the instrument panel cluster (IPC) connector breakout | -- | -- |
S231 | In the IP harness, approximately 66 cm (26.0 in) from the main harness, toward the IP harness connector | -- | -- |
S232 | In the IP harness, approximately 59 cm (23.2 in) from the main harness, toward the IP harness connector | -- | -- |
S238 | In the engine harness, approximately 8 cm (3.1 in) from the interior side of P102 | -- | -- |
S239 (GM Diesel) | In the engine harness, approximately 39 cm (15.4 in) from the interior side of P102 | -- | -- |
S242 (GM Diesel) | In the IP harness, approximately 4 cm (1.6 in) from the MaxiFuse® block/ mini-relay center | -- | -- |
S405 | In the fuel tank harness, approximately 196 cm (77.1 in) to the rear of the fuel harness connector | -- | -- |
S406 | In the two-speed rear axle harness, approximately 65 cm (25.6 in) forward of the two-speed rear axle shift relay breakout | -- | -- |
S407 | In the fuel tank harness, approximately 13 cm (5.1 in) forward of the fuel pump breakout | -- | -- |
