GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

Body Control Module (BCM) (Luxury)

In the center floor console

Body Control System Component Views in Body Control System

Body Control System Connector End Views in Body Control System

Cargo Door Contactor, Left Side

On the rear body opening and the door, on the upper left side

Power Door Systems Component Views in Doors

Power Door Systems Connector End Views in Doors

Cargo Door Contactor, Right Side

On the rear body opening and the door, on the upper right side

Power Door Systems Component Views in Doors

Power Door Systems Connector End Views in Doors

Cargo Door Lock Relay

Behind the LH C pillar

Power Door Systems Component Views in Doors

Power Door Systems Connector End Views in Doors

Convenience Center

Under the left side of the IP, on the bulkhead

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Data Link Connector (DLC)

Under LH of IP, LH of steering column, mounted to bottom of knee bolster

Data Link Communications Component Views in Data Link Communications

Data Link Communications Connector End Views in Data Link Communications

Dome Lamp Defeat Switch

On the left side of the IP, on the left side of the steering column, part of the headlamp and panel dimmer switch

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Door Jamb Switch, Cargo

At the rear body opening, part of the right rear cargo door contactor

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Door Jamb Switch LF

At the left end of the IP

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Door Jamb Switch LR

At the center inside edge of the left side B Pillar

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Door Jamb Switch RF

At the right end of the IP

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Door Jamb Switch RR

At the center inside edge of the right side B Pillar

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Door Lock Control Module

Behind the LH C Pillar

Power Door Systems Component Views in Doors

Power Door Systems Connector End Views in Doors

Door Lock Inversion Module

Left side of the IP, inside the IP support bracket

Power Door Systems Component Views in Doors

Power Door Systems Connector End Views in Doors

Door Lock Motor, Cargo

Inside the right rear door, at the lower right corner

Power Door Systems Component Views in Doors

Power Door Systems Connector End Views in Doors

Door Lock Motor, Left Front

Inside the left front door, part of the door handle

Power Door Systems Component Views in Doors

Power Door Systems Connector End Views in Doors

Door Lock Motor, Left Rear

Inside the left rear door, part of the door handle

Power Door Systems Component Views in Doors

Power Door Systems Connector End Views in Doors

Door Lock Motor, Right Front

Inside the right front door, part of the door handle

Power Door Systems Component Views in Doors

Power Door Systems Connector End Views in Doors

Door Lock Motor, Right Rear

Inside the right rear door, part of the door handle

Power Door Systems Component Views in Doors

Power Door Systems Connector End Views in Doors

Door Lock Relay

Under the center of the IP, near the remote control door lock receiver

Power Door Systems Component Views in Doors

Power Door Systems Connector End Views in Doors

Door Lock Switch, Cargo

On top of the right D pillar

Power Door Systems Component Views in Doors

Power Door Systems Connector End Views in Doors

Door Lock Switch, Left Front

On the left front door trim panel, below the inside door handle

Power Door Systems Component Views in Doors

Power Door Systems Connector End Views in Doors

Door Lock Switch, Right Front

On the right front door trim panel, below the inside door handle

Power Door Systems Component Views in Doors

Power Door Systems Connector End Views in Doors

Horn Switch

At the top of the steering column, under the steering wheel pad

Horn Component Views in Horn Systems

Horn Connector End Views in Horn Systems

IP Fuse Block

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

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Liftgate Release Motor

In the right center of the liftgate

Power Door Systems Component Views in Doors

Power Door Systems Connector End Views in Doors

Park/Neutral Position (PNP) Switch

At LH center of transmission

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--

Remote Control Door Lock Receiver (Base)

Under the IP, inside the right of the right steering column support bracket

Keyless Entry Component Views

Keyless Entry Connector End Views

Underhood Fuse Block

In the left rear side of the engine compartment, on the fender

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Vehicle Interface Unit

Underneath the right rear seat assembly

Cellular Communication Component Views in Cellular Communication

Cellular Communication Connector End Views in Cellular Communication

C100

Part of the engine harness to IP harness, in the left rear side of the engine compartment, at the bulkhead

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C200

Behind the right side of the IP, near the heater motor, in foam wrap

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C209

Inside the lower left side A pillar

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C210

At the convenience center

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C213

Inside the lower right side A pillar

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C266

Part of the IP harness to steering column harness, to the left side of the steering column, near the bulkhead

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C280

At the convenience center

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C298

Behind the left side of the IP, near the convenience center

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C299

Behind RH of IP, above HVAC evaporator, housing

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C301

At the left front kick panel

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C302

At the LF kick panel

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C304 (Luxury)

IP harness, inline to floor console harness

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C305 (Luxury)

Cross body harness, inline to floor console harness

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C314 (Utility)

On the left D-pillar behind the trim cover

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C450

Center rear of the vehicle under the floor between P409 and P410

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C497

In the right side B pillar

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C499

In the left side B pillar

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

G105 (Gas)

On the right front side of the engine block

Power and Grounding Component Views in Wiring Systems

--

G105 (Diesel)

Right Rear of the cylinder head, cylinder #7 intake bolt

Power and Grounding Component Views in Wiring Systems

--

G200

Behind the left side of the IP, below the fuse block, on the tie bar

Power and Grounding Component Views in Wiring Systems

--

G202

On the right side of the instrument panel, mounted to the HVAC plenum bracket

Power and Grounding Component Views in Wiring Systems

--

G400 (Utility)

On the right side B pillar, near the door striker

Power and Grounding Component Views in Wiring Systems

--

P101

In the right rear side of the engine compartment, at the bulkhead

Harness Routing Views in Wiring Systems

--

P500

At the left front door

Harness Routing Views in Wiring Systems

--

P600

At the right front door

Harness Routing Views in Wiring Systems

--

P700

At the left rear door

Harness Routing Views in Wiring Systems

--

P800

At the right rear door

Harness Routing Views in Wiring Systems

--

S107 (5.0L, 5.7L)

Engine harness, approx. 20 cm (8 in) from EGR valve breakout, toward taillamp harness breakout

--

--

S107 (6.5L, HD

Engine harness, approx. 40 cm (15 in) from EBCM breakout, toward transmission harness breakout

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--

S107 (7.4L)

Engine harness, approx. 18 cm (7 in) from EBCM breakout, toward the EGR harness breakout

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--

S147 (Gas)

engine harness, approx. 5 cm (2 in) from EGR valve breakout, toward taillamp harness breakout

--

--

S147 (Diesel)

Engine harness, approx. 4 cm (1.5 in) from starter motor solenoid breakout

--

--

S204

IP harness, approx. 10 cm (4 in) from C100, towards data link connector (DLC)

--

--

S208

IP harness, approx. 6 cm (2.5 in) from IP compartment box lamp breakout

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--

S213

IP harness, approx. 4 cm (1.5 in) from steering column harness breakout, towards the DLC

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--

S218

IP harness, approx. 16 cm (6 in) from inflatable restraint switch breakout

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--

S251

Crossbody harness, approx. 13 cm (5 in) from LF door harness breakout, toward IP harness breakout

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--

S255

Crossbody Harness, approx. 20 cm (8 in) from C210 breakout, toward the LH seat harness breakout

--

--

S256 (Pickup/Extended Cab)

Crossbody harness, approx. 12 cm (4.5 in) from C210 breakout, toward LH seat harness breakout

--

--

S256 (Utility)

crossbody harness, approx. 11 cm (4 in) from C210 breakout, toward the LH seat harness breakout

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--

S256 (Crew Cab)

Crossbody harness, approx. 1 cm (0.5 in) before door lock relay breakout, toward the LH seat harness breakout

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--

S257

Crossbody harness, approx. 8 cm (3 in) left of door lock relay breakout, toward IP harness breakout

--

--

S257 (Pickup/Extended Cab)

Crossbody harness, approx. 5 cm (2 in) from C231 breakout, toward IP harness breakout

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--

S257 (Utility)

Crossbody harness, approx. 5 cm (2 in) from C231 breakout, toward door lock relay breakout

Harness Routing Views in Wiring Systems

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S258

Crossbody harness, approx. 27 cm (10.5 in) from the door relay breakout

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--

S259

Crossbody harness, approx. 7 cm (2.5 in) into seat belt switch harness, toward C212

Harness Routing Views in Wiring Systems

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S260

Crossbody harness, approx. 6 cm (2.5 in) from the power seat breakout

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--

S261

Crossbody harness, approx. 7 cm (2.5 in) into seat belt switch harness, toward C212

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--

S262 (Crew Cab)

Crossbody harness, approx. 19 cm (7.5 in) from seat belt switch breakout, toward IP harness breakout

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--

S262 (Utility)

Crossbody harness, approx. 25 cm (10 in) from seat belt switch breakout, toward IP harness breakout

--

--

S264

Crossbody harness, approx. 7 cm (2.5 in) into seat belt switch harness, toward C212

--

--

S265 (Utility)

Crossbody harness, approx. 8 cm (3 in) from LF door breakout

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--

S296

I/P harness approx. 2.5 cm (1 in.) into C100 harness breakout

--

--

S410 (Utility)

Front-to-rear body harness, approx. 12 cm (4.5 in) from RR door speaker breakout, toward RR door jamb breakout

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--

S431 (Utility w/Rear Heat)

Front-to-rear body harness, approx. 7 cm (2.5 in) from rear window defogger harness breakout, toward LR speaker breakout

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--

S431 (Utility w/o Rear Heat)

Front-to-rear body harness, approx. 32 cm (12.5 in) into crossbody harness breakout

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--

S431 (Utility w/o C69)

Front-to-rear body harness, approx, 65 cm (24.5 in) into crossbody harness breakout

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--

S432 (2-Door Utility w/Cargo doors)

Front-to-rear body harness, approx. 7 cm (2.5 in) from LH door speaker breakout, toward rear dome lamp switch breakout

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--

S432 (4-Door Utility/Suburban w/o C69

Front-to-rear body harness, in crossbody harness breakout, approx. 140 cm (55 in) from C301 breakout

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--

S432 (4-Door Utility/Suburban w/o Rear heat

Front-to-rear body harness, in crossbody harness breakout, approx. 13 cm (5 in) from C232 breakout

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--

S432 (4-Door Utility/Suburban)

Front-to-rear body harness, approx. 7 cm (2.5 in) from rear dome lamp harness breakout, toward LR speaker

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--

S434 (Utility)

Front-to-rear body harness, approx. 20 cm (8 in) before the rear dome lamp harness breakout, towards the HVAC Module

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S434 (Utility w/o C69)

Front-to-rear body harness, approx. 25 cm (10 in) into crossbody harness breakout, towards C301

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