GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

A/C Compressor Refrigerant Pressure Switch

LH front of the engine compartment, mounted in the A/C compressor/condensor hose, below the A/C load switch

Cooling System Component Views in Engine Cooling

Cooling System Connector End Views in Engine Cooling

Automatic Transmission Control Indicator

Center console

Instrument Cluster Component Views in Instrument Panel, Gauges and Console

AT Inline Harness Connector End Views in Automatic Transmission

Automatic Transmission Range Switch

LH side of the transmission housing

Automatic Transmission Component Views in Automatic Transmission

Lighting Systems Connector End Views in Lighting Systems

Automatic Transmission Winter Mode Switch

Center console

Instrument Cluster Component Views in Instrument Panel, Gauges and Console

AT Inline Harness Connector End Views in Automatic Transmission

Battery

LH front of the engine compartment

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Case Adaptor

LH front of the transmission, behind the bell housing

Automatic Transmission Component Views in Automatic Transmission

AT Inline Harness Connector End Views in Automatic Transmission

Cruise Control Module

RH rear of the engine compartment, attached to the lower rail

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Cruise Control Connector End Views in Cruise Control

Cruise Control Release Switch

Attached to the brake pedal

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Cruise Control Connector End Views in Cruise Control

Data Link Connector (DLC)

Attached to the I/P carrier, to the left of the steering column

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Power and Grounding Connector End Views in Wiring Systems

Electronic Brake/Traction Control Module (EBTCM)

LH front of the engine compartment, mounted to the lower rail

Antilock Brakes Component Views in Antilock Brakes

Antilock Brakes Connector End Views in Antilock Brakes

Engine Control Module (ECM)

LH front of the engine compartment, in the ECM housing, at position 1

Engine Controls Component Views in Engine Controls

Engine Controls Connector End Views in Engine Controls

Fuse Block

Mounted to the I/P, lower LH side of the steering column

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Gauge Cluster

LH side of the I/P, just to the left and above the heater and A/C control

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Instrument Cluster Connector End Views in Instrument Panel, Gauges and Console

Heater and A/C Control

Center of the I/P, above the radio

Instrument Cluster Component Views in Instrument Panel, Gauges and Console

HVAC Connector End Views in HVAC Systems

Ignition Switch

Mounted on the upper RH side of the steering column

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Starter and Charging Connector End Views in Engine Electrical

Inside Rear View Mirror

Attached to the upper center of the windshield

Power Roof Systems Component Views in Roof

Stationary Windows Connector End Views in Stationary Windows

Instrument Cluster

LH side of the I/P, above the steering column

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Instrument Cluster Connector End Views in Instrument Panel, Gauges and Console

Main Case

LH side of the transmission

Automatic Transmission Component Views in Automatic Transmission

AT Inline Harness Connector End Views in Automatic Transmission

Output Shaft Speed (OSS) Sensor

LH rear of the transmission housing

Automatic Transmission Component Views in Automatic Transmission

AT Inline Harness Connector End Views in Automatic Transmission

Power Distribution Fuse Block

LH front of the engine compartment, attached to the ECM housing, above the battery

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Sport Mode Switch

Part of automatic transmission shift lever

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Starter Solenoid Switch

Attached to the starter motor, on the RH lower side of the engine

Starter and Charging Component Views in Engine Electrical

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Transmission Control Module (TCM)

Behind the RH side of the I/P

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AT Inline Harness Connector End Views in Automatic Transmission

Wide Open Throttle (WOT) Switch

Attached to the throttle cable

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AT Inline Harness Connector End Views in Automatic Transmission

C101

I/P wiring harness to ECM wiring harness, in the LH front of the engine compartment

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Inline Harness Connector End Views in Wiring Systems

C102 (brown connector)

I/P wiring harness to engine wiring harness, in the LH front of the engine compartment, just behind the battery

Wiper/Washer System Component Views in Wiper/Washer System

Inline Harness Connector End Views in Wiring Systems

C105 (white connector)

I/P wiring harness to ECM wiring harness, at the LH front of the engine compartment, just behind the battery

Wiper/Washer System Component Views in Wiper/Washer System

Inline Harness Connector End Views in Wiring Systems

C106 (blue connector)

I/P wiring harness to ECM wiring harness, at the LH front of thee engine compartment, just behind the battery

Wiper/Washer System Component Views in Wiper/Washer System

Inline Harness Connector End Views in Wiring Systems

C110

ECM wiring harness to A/C control wiring harness, in the ECM housing

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Inline Harness Connector End Views in Wiring Systems

C200A

I/P wiring harness to body wiring harness, at lower LH A-pillar

Power and Grounding Component Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C200B

I/P wiring harness to body wiring harness, at the lower LH A-pillar

Power and Grounding Component Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C205

I/P wiring harness to automatic transmission control switches, attached to the automatic transmission control base, to the right of the shift lever

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Inline Harness Connector End Views in Wiring Systems

G103

Body and I/P wiring harnesses, located at the LH front of the engine compartment, near C102, C105, and C106

Wiper/Washer System Component Views in Wiper/Washer System

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P102

Lower RH corner of the engine compartment

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P103

Lower LH A-pillar, forward of G200

Power and Grounding Component Views in Wiring Systems

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P104

LH engine compartment, at the front of the ECM housing

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P106

RH rear of the engine compartment

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P108

LH engine compartment, at the rear of the ECM housing

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P110

Rear LH corner of the engine compartment

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S127

ECM wiring harness, in the ECM housing, near the ECM connector

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S140

I/P wiring harness, near brake fluid minimum capacity sensor connector branch break off

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S204

I/P wiring harness, near multifunction relay K134 connector branch break off

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S205

I/P wiring harness, approximately 17 cm from P106

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S206

I/P wiring harness, near multifunction relay K134 connector branch break off

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S211

I/P wiring harness, near data link connector (DLC) branch break off

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S212

I/P wiring harness, near multifunction relay K134 connector branch break off

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S215

I/P wiring harness, near data link connector (DLC) branch break off

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S225

I/P wiring harness, near the G201 branch break off

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S228

I/P wiring harness, near the G201 branch break off

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S231

I/P wiring harness, near the gauge cluster connector branch break off

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S250

I/P wiring harness, near the gauge cluster connector branch break off

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S268

Body wiring harness, near the G200 branch break off

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