GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

Adaptor Case

LH front of the transmission, behind the bell housing

Automatic Transmission Electronic Component Views

Automatic Transmission Inline Harness Connector End View

Automatic Transmission Control Indicator

Center console

Instrument Panel, Gages, and Console Component Views in Instrument Panel, Gauges and Console

Automatic Transmission Inline Harness Connector End View

Automatic Transmission Range Switch

LH side of the transmission housing

Automatic Transmission Electronic Component Views

Lighting Systems Connector End Views in Lighting Systems

Automatic Transmission Winter Mode Switch

Center Console

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Automatic Transmission Inline Harness Connector End View

Data Link Connector (DLC)

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

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Data Link Communications Connector End Views in Data Link Communications

Engine Control Module (ECM)

LH front of the engine compartment, in the ECM housing

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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Ignition Switch

Mounted on the upper RH side of the steering column

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Engine Electrical 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 Panel, Gages, and Console Connector End Views in Instrument Panel, Gauges and Console

Main Case

LH side of the transmission

Automatic Transmission Electronic Component Views

Automatic Transmission Inline Harness Connector End View

Vehicle Speed Sensor (VSS) Assembly

LH rear of the transmission housing

Automatic Transmission Electronic Component Views

Automatic Transmission Inline Harness Connector End View

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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Transmission Control Module (TCM)

Behind the RH side of the I/P

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Automatic Transmission Inline Harness Connector End View

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 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 the engine compartment, just behind the battery

Wiper/Washer Component Views in Wiper/Washer System

Inline Harness Connector End Views in Wiring Systems

C200B

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

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, underneath the battery tray

Wiper/Washer Component Views in Wiper/Washer System

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P104

LH engine compartment, at the front of the ECM housing

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P108

LH engine compartment, at the rear of the ECM housing

Power and Grounding Component Views in Wiring Systems

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P110

Rear LH corner of the engine compartment

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S127

ECM wiring harness, in the ECM housing, approximately 3 cm (1 in) from P108

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S204

I/P wiring harness, approximately 16 cm (6 in) from P110, towards connector C200 branch break off

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S205

I/P wiring harness, approximately 61 cm (24 in) from gauge cluster connector branch break off, between blower control and transmission control module branch break offs

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S211

I/P wiring harness, approximately 18 cm (7 in) from cruise release switch and stoplamp switch branch break off, to the right of DLC connector branch break off

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S212

I/P wiring harness, approximately 46 cm (18 in) from cruise release switch and stoplamp switch branch break off, mounted in harness channel behind LH side of heater and A/C control unit

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S225

I/P wiring harness, mounted in harness channel behind LH side of heater and A/C control unit, approximately 4 cm (2 in) from gauge cluster connector branch break off

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S231

I/P wiring harness, approximately 12 cm (5 in) from cruise release switch and stoplamp switch branch break off, to the right of DLC connector branch break off

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S250

I/P wiring harness, mounted in harness channel behind RH side of heater and A/C control unit, approximately 22 cm (9 in) from gauge cluster connector branch break off

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