GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

Body Control Module (BCM)

Mounted on the RH A-Pillar, behind the trim panel

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Data Link Connector (DLC)

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

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Electronic Brake/Traction Control Module (EBTCM)

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

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Engine Control Module (ECM)

LH front of the engine compartment, in the ECM housing at position 40

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Front Side Door Jamb Switch (LH)

Lower LH A-Pillar

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Front Side Door Jamb Switch (RH)

Lower RH A-Pillar

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Front Side Door Lock Switch (LH)

Mounted to the inside LH front side door trim panel

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Front Side Door Lock Switch (RH)

Mounted to the inside RH front side door trim panel

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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 & A/C control

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Horn Relay K63

Lower I/P, to the RH side of the steering column, on the relay box, at position VI

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Ignition Switch

Mounted to the ignition lock cylinder

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Low Beam Relay K131

Lower I/P, to the RH side of the steering column, on the relay box, at position VIII

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Park Lamp Relay K130

Lower I/P, to the RH side of the steering column, on the relay box, at position VII

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Power Distribution Fuse Block

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

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Rear Compartment Courtesy Lamp Switch

Attached to the rear compartment lid

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Rear Side Door Jamb Switch (LH)

Lower LH B-Pillar

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Rear Side Door Jamb Switch (RH)

Lower RH B-Pillar

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Remote Control Door Lock Receiver

In the rear compartment, underneath the LH side of the rear window panel trim

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Theft Deterrent Module

Mounted to the ignition lock cylinder, on the upper RH of the steering column

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C105

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

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C200A

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

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C200B

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

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C301

Body wiring harness to RH courtesy lamp wiring harness, at the base of the RH B-Pillar

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C302

Body wiring harness to LH courtesy lamp wiring harness, at the base of the RH B-Pillar

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C405

Body wiring harness to rear compartment lid harness

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C500

Body wiring harness to LH front side door wiring harness, at the lower LH A-Pillar, near G200

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C600

Body wiring harness to LH front side door wiring harness, at the lower LH A-Pillar, near G200

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G103

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

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G200

Body wiring harness, at the lower LH A-Pillar, above and to the left of C200

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P103

Lower LH A-Pillar, forward of G200

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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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P401

Lower LH corner of the rear compartment

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P402

Upper LH corner of the rear compartment, near the LH taillamp

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P500

In the LH front side door, approximately 12 cm (5 in) from the outside remote control rear view mirror switch

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P600

In the RH front side door, approximately 25 cm (10 in) from the RH front side door lock switch

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S103

Body wiring harness, approximately 27 cm (11 in) from P107 branch break off

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S104

Body wiring harness, approximately 83 cm (33 in) from P103, near P107 branch break off

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S200

I/P wiring harness, near the data link connector (DLC)

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S214

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

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S222

I/P wiring harness, near G201 branch break off

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S245

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

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S250

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

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S264

Body wiring harness, near G200 branch break off

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S267

Body wiring harness, near G200 branch break off

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S270

Body wiring harness, approximately 70 cm (27 in) from the console wiring branch break off

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S308

Body wiring harness, base of the RH A-Pillar, just under the conduit

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S309

Body wiring harness, base of the RH A-Pillar, just under the conduit

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S317

Body wiring harness, base of the LH A-Pillar, just under the conduit

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S319

Body wiring harness, base of the LH A-Pillar, just under the conduit

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S502

LH front side door wiring harness, approximately 26 cm (10 in) from connector

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S602

LH front side door wiring harness, approximately 26 cm (10 in) from connector

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