GM Service Manual Online
For 1990-2009 cars only
Figure 1:

Data Link Connector (DLC), Powertrain Control Module (PCM), Power and Ground


Object Number: 687972  Size: FS
Master Electrical Component List
Indicators
HAZ, HORNS, PNL, STOP LP and TL/MKR Circuit Breakers
S141 and S210 (L18)
Power Distribution for Ignition Coils and Fuel Injectors
G108 and S220 (L18)
G207, G208 and S221 (L18)
Intake Air Temperature (IAT)/Mass Air Flow (MAF) and Manifold Absolute Pressure (MAP) Sensors
Power and Ground, MIL (MX4/MTW)
S141 and S210 (L18)
S142, S178, S179, S405 and S409 (L18)
G102 and S138 (L18)
Figure 2:

Indicators


Object Number: 687975  Size: FS
Master Electrical Component List
Power Distribution for Ignition Coils and Fuel Injectors
Data Link Connector (DLC), Powertrain Control Module (PCM), Power and Ground
Driver Information Center (DIC), ABS, CHANGE OIL, DRL, ENGINE OVERSPEED, HIGH IDLE, INTAKE HEATER, LOW AIR, LOW COOLANT, PRIMARY BRAKE and SERVICE ENGINE SOON Indicators
Driver Information Center (DIC), AUX and PARK BRAKE, CHECK TRANS and REDUCED ENGINE POWER Indicators and Ammeter (U31) and Ammeter Lamp
Driver Information Center (DIC), ABS, CHANGE OIL, DRL, ENGINE OVERSPEED, HIGH IDLE, INTAKE HEATER, LOW AIR, LOW COOLANT, PRIMARY BRAKE and SERVICE ENGINE SOON Indicators
Driver Information Center (DIC), ABS, CHANGE OIL, DRL, ENGINE OVERSPEED, HIGH IDLE, INTAKE HEATER, LOW AIR, LOW COOLANT, PRIMARY BRAKE and SERVICE ENGINE SOON Indicators
Power Distribution for Ignition Coils and Fuel Injectors
Instrument Panel Cluster (IPC), CHECK GAUGES Indicator, Engine Coolant Temperature (ECT), and Engine Oil Pressure (EOP) Gauges and Voltmeter
IGN 1 Circuit Breaker, S225, S226, S230
IGN 1 Circuit Breaker, S232, S243
Automatic Engine Shutdown and Warning
Figure 3:

Power Distribution for Ignition Coils and Fuel Injectors


Object Number: 687978  Size: FS
Master Electrical Component List
Ignition Coils
Indicators
Indicators
IGN 1 Circuit Breaker, S232, S243
Data Link Connector (DLC), Powertrain Control Module (PCM), Power and Ground
Ignition Coils
Fuel Enable and Fuel Injectors
Ignition Coils
Fuel Enable and Fuel Injectors
Figure 4:

Ignition Coils


Object Number: 687985  Size: FS
Master Electrical Component List
Camshaft Position (CMP) and Crankshaft Position (CKP) Sensors, Knock Sensors (KS) and Tachometer
Power Distribution for Ignition Coils and Fuel Injectors
Power Distribution for Ignition Coils and Fuel Injectors
Power Distribution for Ignition Coils and Fuel Injectors
S142, S178, S179, S405 and S409 (L18)
G102 and S138 (L18)
G102 and S138 (L18)
Figure 5:

Camshaft Position (CMP) and Crankshaft Position (CKP) Sensors, Knock Sensors (KS) and Tachometer


Object Number: 687989  Size: FS
Master Electrical Component List
Fuel Enable and Fuel Injectors
Ignition Coils
IGN 1 Circuit Breaker, S232, S243
Instrument Panel Cluster (IPC), Fuel Gauge, Generator Charge Indicator, Speedometer and Tachometer
S105, S261 and S231
Figure 6:

Fuel Enable and Fuel Injectors


Object Number: 687992  Size: FS
Master Electrical Component List
Automatic Engine Shutdown and Warning
Camshaft Position (CMP) and Crankshaft Position (CKP) Sensors, Knock Sensors (KS) and Tachometer
Power Distribution for Ignition Coils and Fuel Injectors
Power Distribution for Ignition Coils and Fuel Injectors
S141 and S210 (L18)
S141 and S210 (L18)
S142, S178, S179, S405 and S409 (L18)
S141 and S210 (L18)
G102 and S138 (L18)
Figure 7:

Automatic Engine Shutdown and Warning


Object Number: 687994  Size: FS
Master Electrical Component List
Intake Air Temperature (IAT)/Mass Air Flow (MAF) and Manifold Absolute Pressure (MAP) Sensors
Fuel Enable and Fuel Injectors
IGN 1 Circuit Breaker, S225, S226, S230
Indicators
Instrument Panel Cluster (IPC), CHECK GAUGES Indicator, Engine Coolant Temperature (ECT), and Engine Oil Pressure (EOP) Gauges and Voltmeter
Clutch, Park/Neutral Position (PNP) and Neutral Safety Switches, Starter Relay and Transmission Control Module (TCM)
G102 and S138 (L18)
G108 and S220 (L18)
G207, G208 and S221 (L18)
S142, S178, S179, S405 and S409 (L18)
G102 and S138 (L18)
G207, G208 and S221 (L18)
Figure 8:

Intake Air Temperature (IAT)/Mass Air Flow (MAF) and Manifold Absolute Pressure (MAP) Sensors


Object Number: 687995  Size: FS
Master Electrical Component List
Heated Oxygen Sensors (HO2S)
Automatic Engine Shutdown and Warning
Data Link Connector (DLC), Powertrain Control Module (PCM), Power and Ground
G102 and S138 (L18)
Figure 9:

Heated Oxygen Sensors (HO2S)


Object Number: 687998  Size: FS
Master Electrical Component List
C212 (Upfitter Connector) and Vehicle Speed Sensor (VSS)
Intake Air Temperature (IAT)/Mass Air Flow (MAF) and Manifold Absolute Pressure (MAP) Sensors
Figure 10:

C212 (Upfitter Connector) and Vehicle Speed Sensor (VSS)


Object Number: 688001  Size: FS
Master Electrical Component List
Evaporative Emissions (EVAP) Canister Purge Solenoid, Exhaust Gas Recalculation(EGR) Valve, Generator and Generator Charge Indicator
Heated Oxygen Sensors (HO2S)
Engine Controls Schematic Icons
Engine Controls Schematic Icons
Instrument Panel Cluster (IPC), Fuel Gauge, Generator Charge Indicator, Speedometer and Tachometer
Figure 11:

Evaporative Emissions (EVAP) Canister Purge Solenoid, Exhaust Gas Recirculation (EGR) Valve, Generator and Generator Charge Indicator


Object Number: 688004  Size: FS
Master Electrical Component List
Throttle Actuator Control (TAC) Motor, TAC Module and Throttle Position(TP) Sensor
C212 (Upfitter Connector) and Vehicle Speed Sensor (VSS)
Instrument Panel Cluster (IPC), CHECK GAUGES Indicator, Engine Coolant Temperature (ECT), and Engine Oil Pressure (EOP) Gauges and Voltmeter
Instrument Panel Cluster (IPC), CHECK GAUGES Indicator, Engine Coolant Temperature (ECT), and Engine Oil Pressure (EOP) Gauges and Voltmeter
Figure 12:

Throttle Actuator Control (TAC) Motor, TAC Module and Throttle Position (TP) Sensor


Object Number: 688005  Size: FS
Master Electrical Component List
Accelerator Pedal and Throttle Actuator Control (TAC) Module
Evaporative Emissions (EVAP) Canister Purge Solenoid, Exhaust Gas Recalculation(EGR) Valve, Generator and Generator Charge Indicator
S141 and S210 (L18)
G102 and S138 (L18)
Figure 13:

Accelerator Pedal and Throttle Actuator Control (TAC) Module


Object Number: 688007  Size: FS
Master Electrical Component List
Clutch Pedal Position (CPP), Turn Signal/Multifunction and High Idle Switches and Throttle Actuator Control (TAC) Module
Throttle Actuator Control (TAC) Motor, TAC Module and Throttle Position(TP) Sensor
Figure 14:

Clutch Pedal Position (CPP), Turn Signal/Multifunction and High Idle Switches and Throttle Actuator Control (TAC) Module


Object Number: 688010  Size: FS
Master Electrical Component List
Stoplamp Switch and Interface Module, Multifunction Alarm Module, Transmission Control Module (TCM) and C212 (Upfitter Connector)
Accelerator Pedal and Throttle Actuator Control (TAC) Module
IGN 1 Circuit Breaker, S225, S226, S230
IGN 1 Circuit Breaker, S232, S243
S141 and S210 (L18)
S141 and S210 (L18)
G102 and S138 (L18)
Figure 15:

Stoplamp Switch and Interface Module, Multifunction Alarm Module, Transmission Control Module (TCM) and C212 (Upfitter Connector)


Object Number: 688011  Size: FS
Master Electrical Component List
Clutch, Park/Neutral Position (PNP) and Neutral Safety Switches, Starter Relay and Transmission Control Module (TCM)
Clutch Pedal Position (CPP), Turn Signal/Multifunction and High Idle Switches and Throttle Actuator Control (TAC) Module
Battery and BRK, HORNS and STOP LP Circuit Breakers, HD LP SW, HORN/STOP and IGN SW 1 Fuses
IGN 1 Circuit Breaker, S225, S226, S230
S141 and S210 (L18)
S141 and S210 (L18)
G102 and S138 (L18)
Brake Fluid Level Switch, Electronic Brake Control Module (EBCM), Ignition Switch, Multifunction Alarm Module, Powertrain Control Module (PCM), PRIMARY BRAKE Indicator, Stoplamp Switch (C2), Stoplamp
Figure 16:

Clutch, Park/Neutral Position (PNP) and Neutral Safety Switches, Starter Relay and Transmission Control Module (TCM)


Object Number: 688013  Size: FS
Master Electrical Component List
Automatic Transmission Modulator Relay and A/T Modulator (MF1)
Stoplamp Switch and Interface Module, Multifunction Alarm Module, Transmission Control Module (TCM) and C212 (Upfitter Connector)
Automatic Engine Shutdown and Warning
G102 and S138 (L18)
S142, S178, S179, S405 and S409 (L18)
G102 and S138 (L18)
Figure 17:

Automatic Transmission Modulator Relay and A/T Modulator (MF1)


Object Number: 688014  Size: FS
Master Electrical Component List
Park/Neutral Position (PNP) Switch and Transmission Control Module(TCM) (MX4/MTW)
Clutch, Park/Neutral Position (PNP) and Neutral Safety Switches, Starter Relay and Transmission Control Module (TCM)
IGN 1 Circuit Breaker, S232, S243
IGN 1 Circuit Breaker, S225, S226, S230
S142, S178, S179, S405 and S409 (L18)
G102 and S138 (L18)
Figure 18:

Park/Neutral Position (PNP) Switch and Transmission Control Module (TCM) (MX4/MTW)


Object Number: 729451  Size: FS
Master Electrical Component List
Automatic Transmission Modulator Relay and A/T Modulator (MF1)
2001 GMT530 b7 Cell 37 Two Speed Rear Axle
Internal Pressure Switches and Solenoids (MX4/MTW)