GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

A/C Compressor Clutch Relay

In the underhood fuse-relay center, in the right rear side of the engine compartment

Refer to Engine Controls Component Views in Engine Controls

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A/C Compressor Cycling Switch

On the top left of the A/C accumulator, on the left side of the engine compartment

Refer to Engine Controls Component Views in Engine Controls

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A/C Compressor High Pressure Cutout Switch

On top of the A/C compressor, on the left front side of the engine

Refer to Engine Controls Component Views in Engine Controls

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Audio Alarm Module

Under the right side of the IP, to the right of the convenience center

Refer to Audible Warnings Component Views in Instrument Panel, Gauges, and Console

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Blower Motor

On the left rear side of the engine compartment, on the cowl

Refer to HVAC Component Views in HVAC Systems - Manual with A/C

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Blower Motor Relay, High

On the front of the evaporator housing, on the left rear of the engine compartment

Refer to HVAC Component Views in HVAC Systems - Manual with A/C

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Convenience Center

Under the right side of the IP, on the cowl

Refer to Audible Warnings Component Views in Instrument Panel, Gauges, and Console

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Cruise Control Module (CCM)

On the right rear side of the engine compartment, on the right front fender

Refer to Cruise Control Component Views in Cruise Control

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Data Link Connector (DLC)

Under the right side of the IP, near the convenience center

Refer to Engine Controls Component Views in Engine Controls

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Door Jamb Switch, Left Front

At the left end of the IP

Refer to Audible Warnings Component Views in Instrument Panel, Gauges, and Console

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Door Jamb Switch, Right Front

At the right end of the IP

Refer to Audible Warnings Component Views in Instrument Panel, Gauges, and Console

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Electronic Brake Control Module (EBCM)

Near the VCM, at the left front wheelhousing

Refer to Engine Controls Component Views in Engine Controls

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Evaporative Emissions (EVAP) Canister Purge Solenoid Valve

At the top left of the engine

Refer to Engine Controls Component Views in Engine Controls

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Fender Turn Lamps, Left Front

On the fender, behind the wheelwell

Refer to Lighting Systems Component Views in Lighting System

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Fender Turn Lamps, Right Front

On the fender, behind the wheelwell

Refer to Lighting Systems Component Views in Lighting System

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Headlamp and Panel Dimmer Switches

Lower right end of the IP

Refer to Lighting Systems Component Views in Lighting System

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Fuel Pump Relay

In the underhood fuse-relay center, on the right rear side of the engine compartment

Refer to Engine Controls Component Views in Engine Controls

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Horn Relay

On the convenience center, under the right side of the IP

Refer to HVAC Component Views in HVAC Systems - Manual with A/C

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HVAC Control Module

Part of the heater controls, in the center of the IP, to the right of the radio

Refer to HVAC Component Views in HVAC Systems - Manual with A/C

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Ignition Coil

At the middle of the engine

Refer to Engine Controls Component Views in Engine Controls

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Ignition Control Module (ICM)

At the left rear of the engine compartment

Refer to Engine Controls Component Views in Engine Controls

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Ignition Switch

On the steering column, under the lock cylinder

Refer to Engine Electrical Component Views in Engine Electrical

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Instrument Cluster

On the upper right end of the IP, above the steering column

Refer to Instrument Panel, Gages, and Console Component Views in Instrument Panel, Guages, and Console

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Interior Lamp Control Module

Behind the lower left side of the IP

Refer to Lighting Systems Component Views in Lighting System

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IP Fuse Block

To the right of the IP, near the right front door jamb switch

Refer to Engine Controls Component Views in Engine Controls

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Liftgate Release Switch

On the right side of the IP

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Mass Air Flow (MAF) Sensor

At the air intake duct, near the air filter, on the left side of the engine

Refer to Engine Controls Component Views in Engine Controls

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Park Brake Switch

On the park brake lever

Refer to Antilock Brake System Component Views in Antilock Brake System

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Power Amplifier

Under the right side of the IP, right of the brake pedal bracket

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Power Amplifier Relay

Under the right side of the IP, right of the brake pedal bracket

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Powertrain Control Module (PCM)

Under the left end of the IP, behind the IP compartment box

Refer to Antilock Brake System Component Views in Antilock Brake System

Refer to Powertrain Control Module Connector End Views in Engine Controls

Radio

In the right side of the IP

Refer to Entertainment Component Views in Entertainment

--

Seat Belt Switch

Under the front seat

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Steering Column

On the right side of the IP

Refer to Tilt Wheel/Column Component Views in Wheel and Column - Tilt

--

Stoplamp Relay

In the underhood (UH) fuse-relay center, right rear side of the engine compartment

Refer to Lighting Systems Component Views in Lighting System

--

Transfer Case Control Module

Under the IP, near the convenience center

Refer to Engine Controls Component Views in Engine Controls

--

Transfer Case Select Switch

On the right side of the IP, to the right of the steering column shift lever

Refer to Audible Warnings Component Views in Instrument Panel, Gauge, and Console

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Turn/Hazard Flasher

Mounted on the convenience center, under the right side of the IP, on the cowl

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Underhood Fuse-Relay Center

In the right rear side of the engine compartment, on the cowl

Refer to Engine Controls Component Views in Engine Controls

--

Vehicle Control Module (VCM)

Above the left front fender

Refer to Antilock Brake System Component Views in Antilock Brake System

Refer to VCM Connector End Views in Engine Controls

Vehicle Speed Sensor (VSS) Buffer

Under the left side of the IP

Refer to Antilock Brake System Component Views in Antilock Brake System

Refer to Engine Controls Connector End Views in Engine Controls

Window Lockout Switch, Rear

On the right front door, below the inside door handle, part of the power window master switch

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Windshield Wiper Motor Module

On the right side of the vehicle, at the rear of the engine compartment, on the cowl

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Window Wiper/Washer Switch, Rear

On the right side of the IP

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C114

On the right top of the engine, near the cowl

--

Refer to Engine Controls Connector End Views in Engine Controls

C115

On the right top of the engine, near the cowl

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--

C118

On the engine side of the cowl, in the right side of the engine compartment

--

Refer to Lighting Systems Connector End Views in Lighting System

C140

On the right side of the engine

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C219

Under the right front seat

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S109

Next to the VSS

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S110

Center of the instrument panel

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S112

Next to the VSS

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S135

Next to the glow plug control switch fusible link

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S136

Next to the glow plug control switch fusible link

--

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S137

Next to the glow plug right bank

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S138

Next to the glow plug left bank

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S140

Next to the intake air temperature (IAT) sensor

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S170

Next to the PCM

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S190

Next to the fuel solenoid driver

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S191

Next to the fuel solenoid driver

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S198

Next to the optical fuel temperature sensor

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S199

Next to the crankshaft position (CKP) sensor

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S210

On the center of the instrument panel between the power mirror switch and the panel dimmer switch

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S223

In the IP harness, behind the radio

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S224

Between the EBCM and the park brake warning switch

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S247

On the center of the instrument panel between the power mirror switch and the panel dimmer switch

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S428

In the taillamp extension harness, near the left tail and stop light lamp

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