GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

Ambient Light Sensor

On the top left of the IP

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

IP Ash Tray Lamp

Center of the IP, above the ash tray

--

Lighting Systems Connector End Views in Lighting Systems

Automatic Transmission Controller

Between the seats, under the console

Tilt Wheel/Column Component Views in Tilt Wheel and Column

--

Automatic Transmission Controller Connector C2 (2 cavities)

Between the seats, under the console

Tilt Wheel/Column Component Views in Tilt Wheel and Column

Tilt Wheel/Column Connector End Views in Tilt Wheel and Column

Backup Lamp Switch

Part of the park/neutral position switch on the left side of the transmission

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Backup Lamp, LH

At the left rear of the vehicle, in the tail lamp

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Backup Lamp, RH

At the right rear of the vehicle, in the tail lamp

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Body Relay Blocl

To the right of the IP, to the left of the IP Fuse Block

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Body Control Module (BCM)

At the lower rear of the IP, on the heater

Body Control System Component Views in Body Control System

--

Body Control Module (BCM) Connector C1, (24 Cavities)

At the lower rear of the IP, on the heater

Body Control System Component Views in Body Control System

Body Control System Connector End Views in Body Control System

Body Control Module (BCM) Connector C2, (24 Cavities)

At the lower rear of the IP, on the heater

Body Control System Component Views in Body Control System

Body Control System Connector End Views in Body Control System

Body Control Module (BCM) Connector C3, (16 Cavities)

At the lower rear of the IP, on the heater

Body Control System Component Views in Body Control System

Body Control System Connector End Views in Body Control System

Cargo Lamp

In the top rear center of the liftglass opening

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Courtesy Lamp, LH Console

To the lower left of the IP

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Courtesy Lamp, RH Console

To the lower right of the IP

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Courtesy Lamp Relay

In the Body Relay Block

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Dome Lamp

At the overhead, between the front seats

--

Lighting Systems Connector End Views in Lighting Systems

Door Handle Switch, LH

Part of the door latch inside the left front door

Power Door Systems Component Views in Power Door Systems

--

Door Handle Switch, LH Connector C2 (2 cavities)

Part of the door latch inside the left front door

Power Door Systems Component Views in Power Door Systems

Power Door Systems Connector End Views in Doors

Door Handle Switch, RH

Part of the door latch inside the right front door

Power Door Systems Component Views in Power Door Systems

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Door Handle Switch, RH Connector C2 (2 cavities)

Part of the door latch inside the right front door

Power Door Systems Component Views in Power Door Systems

Power Door Systems Connector End Views in Doors

Door Jamb Switch, RH

On the right of the IP, near the IP fuse block

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Door Jamb Switch, LH Rear

On the left B pillar

--

Lighting Systems Connector End Views in Lighting Systems

Door Jamb Switch, RH Rear

On the right B pillar

--

Lighting Systems Connector End Views in Lighting Systems

Door Lock and Side Window Switch, LH

In the left door trim panel armrest

Lighting Systems Component Views in Lighting Systems

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Door Lock and Side Window Switch, LH Connector C2 (3 cavities)

In the left door trim panel armrest

Lighting Systems Component Views in Lighting Systems

Power Door Systems Connector End Views in Doors

Door Lock and Side Window Switch, RH

In the right door trim panel armrest

Lighting Systems Component Views in Lighting Systems

--

Door Lock and Side Window Switch, RH Connector C1 (11 cavities)

In the left door trim panel armrest

Lighting Systems Component Views in Lighting Systems

Power Door Systems Connector End Views in Doors

Door Lock and Side Window Switch, RH Connector C2 (8 cavities)

In the left door trim panel armrest

Lighting Systems Component Views in Lighting Systems

Power Door Systems Connector End Views in Doors

Driver Information Display Module

At the front overhead, in the passenger compartment

Lighting Systems Component Views in Lighting Systems

--

Driver Information Display Module, Connector C1 (6 cavities)

At the front overhead in the passenger compartment

--

Driver Information Systems Connector End Views in Instrument Panel, Gauges and Console

Driver Information Display Module, Connector C2 (4 cavities)

At the front overhead in the passenger compartment

Lighting Systems Component Views in Lighting Systems

Driver Information Systems Connector End Views in Instrument Panel, Gauges and Console

Electronic Climate Control (ECC) Module

At the IP Harness, center of the IP, below the radio

Lighting Systems Component Views in Lighting Systems

HVAC Connector End Views in HVAC

Flash To Pass Relay

In the engine compartment, mounted center on the cowl

Power and Grounding Component Views in Wiring Systems

--

Fog Lamp Relay, Front

In the body relay block

Power and Grounding Component Views in Wiring Systems

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Fog Lamp Switch, Front

To the right of the IP, near the IP dimmer switch

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Fog Lamp Relay, Rear

In the underhood fuse block

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Fog Lamp Switch, Rear

To the right of the IP, near the IP dimmer switch

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Fog Lamp, LH

To the left of the vehicle, below the headlamp

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Fog Lamp, RH

To the right of the vehicle, below the headlight the headlamp

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Fog Lamp, RH Rear

RH rear of the vehicle, lower inside of the tailamp assembly

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Fog Lamp, LH Rear

LH rear of the vehicle, lower inside of the tailamp assembly

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Hazard Switch

Center of IP, next to the radio

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Headlamp Hi/Low Switch

Part of the steering column control lever

--

--

Headlamp Grounding Relay

In the body harness, near the IP C203

Power and Grounding Component Views in Wiring Systems

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Headlamp Power Relay

In the underhood fuse block

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Headlamp , LH Low Beam

The outer headlamp bulb, left side

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Headlamp, RH Low Beam

The outer headlamp bulb, right side

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Headlamp , LH high Beam

The inner headlamp bulb, left side

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Headlamp, RH high Beam

The inner headlamp bulb, right side

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Headlamp Switch

At the base of the RH steering column control lever

--

--

Headlamp Leveling Actuator, RH (UK/S. Africa)

Behind the RH headlamp

--

Lighting Systems Connector End Views in Lighting Systems

Headlamp Leveling Actuator, LH (UK/S. Africa)

Behind the LH headlamp

--

Lighting Systems Connector End Views in Lighting Systems

Headlamp Leveling Switch (UK/S. Africa)

On the IP, right of the steering column, near the IP dimmer switch

--

Lighting Systems Connector End Views in Lighting Systems

High Mount Stop Lamp

At the top rear center of the vehicle

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

High Mounted Stop Lamp Resistor

At the body harness, 13 cm (5.2 in) before the breakout to the cargo and high mounted stop lamps

Power and Grounding Component Views in Wiring Systems

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Inadvertent Power Lamp Relay

In the body relay block

Power and Grounding Component Views in Wiring Systems

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Instrument Cluster

In the IP, ahead of the steering column

--

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

IP Dimmer Switch

On the IP, right of the steering column

Lighting Systems Component Views in Lighting Systems

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IP Compartment Lamp

In the IP compartment

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views inLighting Systems

IP Fuse Block

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

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Multifunction Switch (T/SIG & HDLP HI/LO/SW & HDLP ON/OFF & FTP)

On the right side of the steering column

Tilt Wheel/Column Component Views in Steering Wheel and Column - Tilt

--

Outside Rear View Mirror Switch

In the RH door trim panel beside the arm rest

Power Door Systems Component Views In Doors

Power Door Systems Connector End Views In Doors

Park Lamp Relay

In the Body relay block

Power and Grounding Component Views in Wiring Systems

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Park Lamp Switch Relay

In the rear of the engine compartment, mounted at the center of the cowl

Power and Grounding Component Views in Wiring Systems

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Park Neutral Position (PNP) Switch

Part of the backup lamp switch on the left of the transmission

--

--

Park Neutral Position (PNP) Switch Connector C1

Part of the backup lamp switch on the left of the transmission

--

Automatic Transmission Inline Harness Connector End View in Automatic Transmission

Radio

Center of the IP

Lighting Systems Component Views in Lighting Systems

Entertainment Connector End Views in Entertainment

Rear License Plate Lamp, LH

On the rear bumper

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Rear License Plate Lamp, Center

Above the rear license plate

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Rear License Plate Lamp, RH (

On the rear bumper

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Rear Window Wiper Cutout and Liftglass Ajar Jamb Switch

In the endgate near the latch

Body Rear End Component Views in Body Rear End

Body Rear End Connector End Views in Body Rear End

Rear Wiper/Washer Switch And Endgate Window Release Switch

On the center console

Body Rear End Component Views in Body Rear End

Body Rear End Connector End Views in Body Rear End

Side Marker Lamp, LH

To the left of the vehicle, at the outer part of the headlamp

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Side Marker Lamp, RH

To the right front of the vehicle, at the outer part of the headlamp

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Side Repeater Lamp, LH

On the left fender

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Side Repeater Lamp, RH

On the right fender

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Side Window Lockout Switch

The second connector from the front at the RF armrest

Power Door Systems Component Views in doors

Power Door Systems Connector End Views in doors

Sunshade Mirror Lamp, RH

In the right sunshade

Stationary Windows Component Views in Stationary Windows

Lighting Systems Connector End Views in Lighting Systems

Sunshade Mirror Lamp, LH

In the left sunshade

Stationary Windows Component Views in Stationary Windows

Lighting Systems Connector End Views in Lighting Systems

Tail/Stop Lamp,LH

At the LH tail lamp assembly

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Tail/Stop Lamp,RH

H tail lamp assembly

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

TCC/Stop Lamp Switch

Mounted on the brake pedal support bracket

Engine Electrical Component Views in Engine Electrical

Automatic Transmission Inline Harness Connector End View in Automatic Transmission

Trailer Wiring Provision

Coiled in the left rear crossmember

Lighting Systems Component Views in Lighting Systems

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Transfer Case Select Switch Connector C1 (8 Cavities)

At the front center of the IP, above the right of the radio

--

Transfer Case Control Connector End Views in Transfer Case

Turn Signal Lamp, LH

Under the LH headlamp assembly

--

Lighting Systems Connector End Views in Lighting Systems

Turn Signal Lamp, RH

Under the RH headlamp assembly

--

Lighting Systems Connector End Views in Lighting Systems

Turn Signal Lamp, LH Rear

In the LH tailamp assembly

Harness Routing Views in Wiring Systems

Lighting Systems Connector End Views in Lighting Systems

Turn Signal Lamp, RH Rear

In the RH tailamp assembly

Harness Routing Views in Wiring Systems

Lighting Systems Connector End Views in Lighting Systems

Turn Signal Switch

Part of the steering column, at the base of the RH control lever

--

--

Underhood Fuse Block

On the top of the right inner wheelwell near the battery

Power and Grounding Component Views in Wiring Systems

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Underhood Fuse Block Connector C1 (68 cavities)

Below the underhood fuse block

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Underhood Fuse Block Connector C2 (68 Cavities)

Below the underhood fuse block

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Underhood Fuse Block Connector C3 (32 Cavities)

Below the underhood fuse block

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Underhood Fuse Block Connector C4 (32 Cavities)

Below the underhood fuse block

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Underhood Lamp

To the left rear of the engine compartment, on the hood

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

C106 (8 Cavities)

At the forward lamps to body harness, inside the right front fender near the underhood fuse block

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C130 (7 Cavities)

Chassis harness to forward lamp harness connector, left rear of the engine compartment

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C203 (116 Cavities)

At the body harness to IP harness, to the left of the IP

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C209 (16 Cavities)

At the body harness to dome harness, at the left front of the IP

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C211 (48 Cavities)

At the body harness to steering column harness, below the IP, near the steering column

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C224 (4 Cavities)

At the body harness to IP tray harness, in front of the IP, to the rear of the ashtray

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C229 (2 Cavities)

In the body harness to dome harness near C203

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C402 (6 Cavities)

At the body harness to right taillamp harness, at the right rear of the vehicle

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C403 (6 Cavities)

At the body harness to left taillamp harness, to the left rear of the vehicle

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C430 (4 Cavities)

At the chassis harness to license lamp harness, inside the rear crossmember, in front of the license plate

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C501 (22 Cavities)

At the body harness to left front door harness, near the P500

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C601 (16 Cavities)

At the body harness to right front door harness, near the P600

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C610 (22 Cavities)

At the body harness to right front door harness, near the P600

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

D101

In the body harness between the S404 and S405 slices

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--

G102

(CKT 350) At the engine harness, to the left rear of the cylinder head

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--

G110

(CKT 150) At the body harness, to the left of the radiator support

--

--

G111

(CKT 150) At the forward lamps harness, to the left of the radiator support

--

--

G112

(CKT 250) At the forward lamps harness, to the right inside of the radiator support

--

--

G200

(CKT 1850) At the body harness, to the left front of the IP

--

--

G201

(CKT 1850) At the body harness, to the left front of the IP

--

--

G202

(CKT 1850) At the body harness, to the left front of the IP

--

--

G203

(CKT 1850) At the body harness, to the right of the IP

--

--

G204

(CKT 1850) At the body harness, to the right of the IP

--

--

G402

(CKT 22, CKT 1650) At the chassis harness, near the top center of the second crossmember from the rear, with the fuel filler neck ground strap

--

--

G450

Power and Grounding Component Views in Wiring Systems

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--

P100

At the IP bulkhead pass-through, to the right rear of the engine compartment, on the cowl

--

--

P402

At the left tail lamp jumper, To the left rear of the vehicle, near the left park and turn lamp

--

--

P403

To the right tail lamp jumper, to the right rear of the vehicle, near the right park and turn lamp

--

--

P500

At the body harness to the left front door pass-through,between the body and the left front door

--

--

P600

At the body harness to the right front door pass-through,between the body and the right front door

--

--

P900

At the body harness between the body and the endgate

--

--

S107

(CKT 189) At the forward lamps harness, between the breakouts for the RH horn connector and the SP101, 11.5 cm (4.6 from the SP101 breakout

--

--

S108

(CKT 350) At the forward lamps harness, between the breakouts for the RH horn connector and the SP101, 16 cm (6.4 from the RH horn connector breakout

--

--

S111

(CKT 712) In the forward lamp harness between the breakouts to the LH side marker lamp connector and the LH headlamp high beam connector, 6.5 cm (2.6 in) from the LH side marker lamp connector breakout

--

--

S112

(CKT 198) In the forward lamp harness 12 cm (4.8 in) from the RH horn connector breakout toward the C106

--

--

S117

(CKT 74) In the body harness 26 cm (10.4 in) from the breakout for the windshield wiper motor connector toward the underhood fuse block

--

--

S119

(CKT 240) In the body harness 13 cm (5.2 in) from the breakout for the windshield wiper motor connector toward the underhood fuse block

--

--

S122

(CKT 2234) In the body harness 13 cm (5.2 in) from the EBCM C1 connector breakout and the C109 connector harness

--

--

S124

(CKT 150) In the body harness 20.5 cm (8.2 in) from the breakout to the cruise control module connector, toward the EBCM

--

--

S202

(CKT 1415) In the body harness 19.5 cm (7.8 in) from the BCM connector breakout toward C211

--

--

S206

(CKT 1220) In the body harness between the breakouts to the BTSI connector and the automatic transmission control indicator lamp, 9.5 cm (3.8 ) from the automatic transmission indicator lamp breakout

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--

S209

(CKT 1850) In the body harness 6.5 cm (2.6 in) from the BCM connector breakout toward C211

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--

S211

(CKT 1850) In the body harness 6.5 cm (2.6 in) from the G203, G204, and G205 ground breakout and the ground terminals

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--

S212

(CKT 1414) In the body harness 26 cm (10.4 in) from the BCM connector breakout toward C211

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--

S221

(CKT 524) In the body harness 4 cm (1.6 in) from the data link connector breakout toward the body harness conduit running across the IP

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--

S225

(CKT 1414) In the IP harness between the breakouts for the BCM C3 and the radio connector, 13 cm (5.2 in) from the BCM C3 breakout

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--

S226

(CKT 1415) In the IP harness between the breakouts for the BCM C3 and the radio connector, 6.5 cm (2.6 in) from the BCM C3 breakout

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--

S228

(CKT 352) In the body harness 15 cm (6 in) from the breakout to the headlamp switch relay in the headlamp switch relay harness branch

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--

S229

(CKT 352) In the body harness 15 cm (6 in) from the breakout to the headlamp switch relay in the headlamp switch relay harness branch

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--

S283

(CKT 2409) In the IP harness between the breakouts for the BCM C3 and the cigar lighter connector C224, 6.5 cm (2.6 in) from the BCM C3 breakout

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--

C302

(CKT 1850) In the dome harness 11 cm (4.4 in) from the LH sunshade mirror lamp connector toward C229

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--

S304

(CKT 1324) In the body harness 98 cm (39.2 in) toward the rear from the harness breakout to the both rear doors

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--

S332

(CKT 1732) In the dome harness between the breakouts for the auto day/night mirror connector and the LH sunhade mirror connector, 18.5 cm (7.4 in) from the LH sunhade mirror connector breakout

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--

S404

(CKT 1350) In the body harness between the breakouts for the C432 and the high mount stop lamp, 13 cm (5.2 in) from the high mount stop lamp breakout

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--

S405

(CKT 1320) In the body harness between the breakouts for the C432 and the high mount stop lamp, 13 cm (5.2 in) from the high mount stop lamp breakout

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--

S406

(CKT 1320) In the body harness between the breakouts for the rear auxiliary power outletand the high mount stop lamp, 11.5 cm (4.6 in) from the high mount stop lamp breakout

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--

S419

(CKT 1350) In the left tail lamp jumper harness, 6.5 cm (2.6 in) from the tail/stop lamp connector breakout toward the P403

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--

S420

(CKT 1350) In the right tail lamp jumper harness, 6.5 cm (2.6 in) from the tail/stop lamp connector breakout toward the P403

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--

S425

(CKT 2109) In the license lamp harness between the breakouts for the LH and center license lamps, 16.5 cm (6.6 in) from the LH license lamp breakout

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S426

(CKT 1650) In the license lamp harness between the breakouts for the LH and center license lamps, 6.5 cm (2.6 in) from the LH license lamp breakout

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--

S427

(CKT 1350) At the left rear body harness, 7 cm (2.75 in) forward ofthe breakout to the left tail lamp connector C403

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--

S428

(CKT 34) At the left rear body harness, 19.5 cm (7.8 in) forward of the breakout to the left tail lamp connector C403

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--

S501

(CKT 1850) In the LH door harness between the breakouts for the door speaker connector and the door lock and side window switch connector, 5 cm (2 in) from the door lock and side window switch connector breakout

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--

S602

(CKT 840) In the RH door harness 20 cm (8 in) from the C610

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S603

(CKT 1850) In the RH door harness between the breakouts for the outside rear view mirror C604 and the side window regulator motor C1, 9 cm (3.6 in) from the C604 breakout

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--

SP100

(CKT 150) At the forward lamp harness, to the left rear of the radiator support

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--

SP101

(CKT 250) At the forward lamp harness, to the right inside of the radiator support

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--

SP203

(CKT 1850) In the IP harness below the IP, behind the ash tray

--

--

Splice Pack SP423

(CKT 470, CKT 1650, CKT 2109) At the chassis harness, on top of the rear crossmember

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