GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

Auxiliary Side Front Turn Signal Lamp, Left

On the left side of the front fender

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Auxiliary Side Front Turn Signal Lamp, Right

On the right side of the front fender

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Center High Mounted Stop Lamp (CHMSL)

At the top rear center of the vehicle

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Convenience Center

Under the IP, on the left side

Power and Grounding Component Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

Data Link Connector (DLC)

Under the left side of the IP

Data Link Communications Component Views in Data Link Communications

Data Link Communications Connector End Views in Data Link Communications

Door Jamb Switch, Side

In the center of the right B pillar

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Door Lock Actuator Motor, Left Front

Attached to the interior of the left front door

Power Door Systems Component Views in Doors

Power Door Systems Connector End Views in Doors

Door Lock Actuator Motor, Rear

Attached to the interior of the rear door

Power Door Systems Component Views in Doors

Power Door Systems Connector End Views in Doors

Door Lock Actuator Motor, Right Front

Attached to the interior of the right front door

Power Door Systems Component Views in Doors

Power Door Systems Connector End Views in Doors

Door Lock Actuator Motor, Side

Attached to the interior of the side door

Power Door Systems Component Views in Doors

Power Door Systems Connector End Views in Doors

Electronic Brake Control Module (EBCM)

On the left frame rail, near the center of the vehicle

Antilock Brake System Component Views in Antilock Brakes

Antilock Brake System Connector End Views in Antilock Brakes

Fuel Buffer Module

Under the center of IP

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

Instrument Panel, Gages, and Console Connector End Views in IP, Gauges and Console

In-line Fuse, Left

In the left body harness, under the left side of the instrument panel

Power and Grounding Component Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

In-line Fuse, Right

In the left body harness, under the left side of the instrument panel

Power and Grounding Component Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

Instrument Cluster

On the left side of the IP

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

Instrument Panel, Gages, and Console Connector End Views in IP, Gauges and Console

IP Fuse Block

In the left lower kick panel

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Lighting Control Relay

IP harness, approximately 130 cm (52 in) from the passenger SIR breakout

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Park and Turn Signal Lamp, Left Front (Base)

In the left front corner of the vehicle

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Park and Turn Signal Lamp, Left Front, Auxiliary

In the left front corner of the vehicle

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Park and Turn Signal Lamp, Left Rear

In the left rear corner of the vehicle, part of the taillamp assembly

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Park and Turn Signal Lamp, Right Front (Base)

In the right front corner of the vehicle

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Park and Turn Signal Lamp, Right Front, Auxiliary

In the right front corner of the vehicle

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Park and Turn Signal Lamp, Right Rear

In the right rear corner of the vehicle, part of the taillamp assembly

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Passlockā„¢ Module

Below the center of the IP

Theft Deterrent System Component Views

Theft Deterrent System Connector End Views

Passlockā„¢ Sensor

Internal to the steering column

Theft Deterrent System Component Views

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Position Lamp, Left

Part of the headlamp assembly, on the left front corner of the vehicle

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Position Lamp, Right

Part of the headlamp assembly, on the right front corner of the vehicle

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Power Door Lock Control Module

In the left kick panel

Power Door Systems Component Views in Doors

Power Door Systems Connector End Views in Doors

Power Door Lock Relay

Behind the IP, in the center of the bulkhead

Power Door Systems Component Views in Doors

Power Door Systems Connector End Views in Doors

Power Door Lock Switch, Left Front

Attached to the interior of the left front door accessory mount plate

Power Door Systems Component Views in Doors

Power Door Systems Connector End Views in Doors

Power Door Lock Switch, Right Front

Attached to the interior of the right front door accessory mount plate

Power Door Systems Component Views in Doors

Power Door Systems Connector End Views in Doors

Power Door Lock Switch, Rear

Attached to the interior of the right rear door panel

Power Door Systems Component Views in Doors

Power Door Systems Connector End Views in Doors

Powertrain Control Module (PCM)

Behind the center of the IP

Engine Controls Component Views in Engine Controls

Powertrain Control Module Connector End Views in Engine Controls

Rear License Plate Lamp

Part of the rear bumper

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Side Door Contact

In the right B pillar

Power Door Systems Component Views in Doors

Power Door Systems Connector End Views in Doors

TCC/Stoplamp Switch

Below the center of the IP, near the brake pedal lever

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Vehicle Control Module (VCM)

In the engine compartment, on the left fender

    •  Engine Controls Component Views 5.0,5.7L

in Engine Controls

    •  VCM Connector End Views 4.3L
    •  VCM Connector End Views 5.0,5.7L
    •  VCM Connector End Views 7.4L

in Engine Controls

Vehicle Immobilizer Module (VIM)

In the crossbody harness, behind the instrument panel, in the right center of the bulkhead

Theft Deterrent System Component Views

Theft Deterrent System Connector End Views

C100

In the left rear of the engine compartment at the bulkhead

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C102

In the left side of the engine compartment, near the fender well

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C200

Steering column harness at the base of the column

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C202

Left body harness, under the left side of the IP, near the brake pedal, at the convenience center

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C207

Crossbody harness, in the convenience center, under the IP, on the left side

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C209

Left body harness, under the left side of the IP, near the bulkhead

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C210

Crossbody harness, under the left side of the IP, near the brake pedal, at the convenience center

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C211

Crossbody harness, under the left kick panel

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C212

Behind the right kick panel

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C400

In the right rear corner of the interior of the cabin, behind the rear wheel house

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C401

Right taillamp harness, in the left rear of the vehicle, behind the lens assembly

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C404

Left taillamp harness, in the left rear of the vehicle, behind the lens assembly

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C406

In the right rear corner of the interior of the cabin, behind the rear wheel house

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C419

Left body harness, in the rear center of the vehicle, under the headliner, behind the center high mounted stoplamp

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C909

Behind the rear bumper

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

G103 (4.3L)

Engine harness, at the generator bracket

Power and Grounding Component Views in Wiring Systems

--

G103 (5.0L, 5.7L, 7.4L)

In the rear of the right cylinder head

Power and Grounding Component Views in Wiring Systems

--

G103 (6.5L)

Engine harness, at the generator bracket

Power and Grounding Component Views in Wiring Systems

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G108

In the left side of the engine compartment, near the fender well

Power and Grounding Component Views in Wiring Systems

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G109

In the right side of the engine compartment, near the fender well

Power and Grounding Component Views in Wiring Systems

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G200

Behind the left kick panel, near the power door lock control module

Power and Grounding Component Views in Wiring Systems

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G201

IP harness, behind the left kick panel, near the IP fuse block

Power and Grounding Component Views in Wiring Systems

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G400

In the left rear corner of the interior of the cabin, behind the rear wheel house

Power and Grounding Component Views in Wiring Systems

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G401

In the right rear corner of the interior of the cabin, behind the rear wheel house

Power and Grounding Component Views in Wiring Systems

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P100

In the left rear of the engine compartment, at the bulkhead

Harness Routing Views in Wiring Systems

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P101

Under the RH side of the IP

Harness Routing Views in Wiring Systems

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P400

In the right rear corner of the interior of the cabin, behind the rear wheel house, on the floor board

Harness Routing Views in Wiring Systems

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P500

At the left front door

Harness Routing Views in Wiring Systems

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P600

At the right front door

Harness Routing Views in Wiring Systems

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P901

At the right rear door

Harness Routing Views in Wiring Systems

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P903

On the left taillamp harness, in the left rear of the vehicle, behind the lens assembly

Harness Routing Views in Wiring Systems

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P904

On the right taillamp harness, in the left rear of the vehicle, behind the lens assembly

Harness Routing Views in Wiring Systems

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S102 (4.3L)

In the engine harness, approximately 104 cm (41 in) from the underhood fuse-relay center, toward the A/C compressor breakout

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--

S102 (5.0L, 5.7L)

In the engine harness, approximately 104 cm (41 in) from the underhood fuse-relay center, toward the A/C compressor breakout

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--

S102 (6.5L)

In the engine harness, approximately 4 cm (1.5 in) from the A/C compressor breakout, toward C101

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--

S102 (7.4L)

In the engine harness, approximately 104 cm (41 in) from the underhood fuse-relay center, toward the A/C compressor breakout

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--

S110

In the forward lamp harness, approximately 19 cm (7 in) into the left forward lamp breakout

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--

S118

In the forward lamp harness, approximately 22 cm (9 in) into the right forward lamp breakout

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--

S142

in the forward lamp harness, approximately 26 cm (10 in) into the left forward lamp breakout

--

--

S145

In the forward lamp harness, approximately 15 cm (6 in) into the right forward lamp breakout

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--

S153 (4.3L)

In the engine harness, approximately 4 cm (1.5 in) from the A/C compressor breakout, in the VCM harness

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--

S153 (5.0L, 5.7L)

In the engine harness, approximately 8 cm (3 in) from the C100 breakout, in the VCM harness

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--

S153 (6.5L)

In the engine harness, approximately 27 cm (11 in) from the A/C compressor breakout, toward the underhood fuse-relay center

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--

S153 (7.4L)

In the engine harness, approximately 4 cm (2 in) from the park brake warning switch breakout, toward the datalink connector (DLC) breakout

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--

S201

In the IP harness, approximately 4 cm (2 in) from the park brake warning switch breakout, toward the data link connector (DLC) breakout

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--

S203

In the IP harness, approximately 13 cm (5 in) from the radio breakout, toward the passenger SIR C216

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S206

In the crossbody harness, approximately 21 cm (8 in) from the power door lock relay breakout, toward the illuminated entry module breakout

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--

S207

In the IP harness, approximately 6 cm (2 in) from the park brake warning switch breakout, toward the datalink connector (DLC) breakout

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--

S216

In the IP harness, approximately 8 cm (3 in) from the C200 breakout, toward the instrument cluster breakout

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--

S221

In the IP harness, approximately 4 cm (2 in) into the power seat breakout

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--

S225

In the IP harness, approximately 4 cm (2 in) from the HVAC switch breakout, toward the instrument cluster breakout

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--

S228

In the crossbody harness, approximately 11 cm (4 in) from the illuminated entry module breakout, toward the c209 breakout

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--

S236

In the IP harness, approximately 14 cm (6 in) from the park brake warning switch breakout, toward the DLC breakout

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--

S237

In the IP harness, approximately 4 cm (2 in) from the C200 breakout, toward the instrument cluster breakout

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--

S241

In the crossbody harness, approximately 14 cm (6 in) from the C209 breakout, toward the illuminated entry module breakout

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--

S242

In the crossbody harness, approximately 4 cm (2 in) from the illuminated entry module breakout, toward the C209 breakout

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--

S243

In the crossbody harness, approximately 13 cm (5 in) from the C212 breakout, toward the door lock relay breakout

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--

S244

In the crossbody harness, approximately 20 cm (8 in) from the door lock relay beakout, toward C212

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--

S246

In the IP harness, approximately 25 cm (10 in) from the HVAC switch breakout, toward the instrument cluster breakout

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--

S247

In the IP harness, approximately 21 cm (8 in) from the HVAC switch breakout, toward the instrument cluster breakout

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--

S253

In the IP harness, approximately 21 cm (8 in) from C100, toward the park brake warning switch breakout

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--

S254

In the IP harness, approximately 10 cm (4 in) from the park brake warning switch breakout, toward the datalink connector (DLC) breakout

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--

S324 (135 WB Only)

In the body harness, approximately 7 cm (3 in) from the left stepwell lamp breakout, toward the crossbody harness connector C209 breakout

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--

S400 (Upfitters Provisions)

In the body harness, approximately 13 cm (5 in) from the auxiliary HVAC harness connector C407 breakout, toward the G400 breakout

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--

S401 (135 WB)

In the body harness, approximately 23 cm (9 in) from the connector C401 breakout, toward the connector C415 breakout

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--

S401 (155 WB)

In the body harness, approximately 21 cm (8 in) from the connector C401 breakout, toward the connector C415 breakout

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--

S401 (Upfitters Provisions)

In the body harness, approximately 7 cm (3 in) from the connector C401 breakout, toward the connector C419 breakout

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--

S410 (135 WB)

in the body harness, approximately 12 cm (5 in) from the G400 breakout, toward the center high mounted stoplamp connector C419 breakout

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--

S410 (155 WB)

In the body harness, approximately 7 cm (3 in) from the G400 breakout, toward the center high mounted stoplamp connector C419 breakout

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--

S410 (Upfitters Provisions)

In the body harness, approximatley 13 cm (5 in) from the G400 breakout, toward the center high mounted stoplamp connector C419 breakout

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--

S900

In the right taillamp harness, approximately 11 cm (4 in) from pass-through P904, toward connector C401

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--

S901

In the left tail lamp harness, approximately 12 cm (5 in) from pass-through P903 toward connector C404

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--

S902 (Export)

In the rear license jumper harness, approximately 7 cm (3 in) into the rear fog lamp breakout

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--

S907 (Export)

In the rear bumper harness, approximately 18 cm (7 in) from the connector C909 breakout, toward the rear fog lamp breakout

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--

S909

In the right taillamp harness, approximately 15 cm (6 in) from connector C401

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--

S910

In the left taillamp harness, approximately 15 cm (6 in) from connector C404

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