GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

A/C Compressor Control Relay

In the left front of the engine compartment

Electrical Center Identification Views in Wiring Systems

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Battery

In the left front of the engine compartment

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Body Control Module (BCM)

Behind the left side of the instrument panel

Body Control System Component Views in Body Control Systems

Body Control System Connector End Views in Body Control Systems

Brake Switch

In the lower instrument panel below the steering column

Hydraulic Brake Component Views in Hydraulic Brakes

Hydraulic Brake Connector End Views in Hydraulic Brakes

Cigar Lighter (Pontiac)

On the console

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Power and Grounding Connector End Views

Cigar Lighter (Chevrolet)

On the instrument panel

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Power and Grounding Connector End Views

Cruise Control Module

In the center of the engine compartment

Cruise Control Component Views in Cruise Control

Cruise Control Connector End Views in Cruise Control

Data Link Connector

At the lower instrument panel tie bar

Data Link Communications Component Views in Wiring Systems

Data Link Communications Connector End Views in Wiring Systems

Door Lock Relay

In the right hand front of the passenger compartment

Power Door Systems Component Views in Doors

Power Door Systems Connector End Views in Doors

EBCM Relay

Integral to the EBCM

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Underhood Fuse/Relay Center

In the left front of the engine compartment

Electrical Center Identification Views in Wiring Systems

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Generator

At the right front of the engine

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Horn

At the right front corner behind the fascia

Horn Component Views in Horns

Horn Connector End Views in Horns

Horn Relay

At the left front of the passenger compartment attached to the fuse block harness

Horn Component Views in Horns

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Ignition Switch

At the right side of the steering column

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Power and Grounding Connector End Views

Instrument Panel Cluster

At the left instrument panel

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

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

C100 (38 cavities)

At the left rear side of the engine compartment

Harness Routing Views

Inline Harness Connector End Views

C101 (15 cavities)

In the engine compartment under the battery tray

Harness Routing Views

Inline Harness Connector End Views

C200 (23 cavities)

At the left front of the passenger compartment below BCM

Harness Routing Views

Inline Harness Connector End Views

C201 (8 cavities) (Pontiac Only)

At the left instrument panel

Harness Routing Views

Inline Harness Connector End Views

C202 (6 cavities)

LH IP behind and above the IP fuse block

Harness Routing Views

Inline Harness Connector End Views

C203 (3 cavities)

At the left instrument panel

Harness Routing Views

Inline Harness Connector End Views

C204 (8 cavities)

At the right rear instrument panel attached to the HVAC case

Harness Routing Views

Inline Harness Connector End Views

C206 (2 cavities)

At the lower instrument panel tie bar

Harness Routing Views

Inline Harness Connector End Views

C207 (2 cavities)

Near the passenger inflator module at the top of the HVAC case

Harness Routing Views

Inline Harness Connector End Views

C220 (6 cavities) (Pontiac Only)

At the left front of the passenger compartment

Harness Routing Views

Inline Harness Connector End Views

C313 (16 cavities)

On the fuel tank

Harness Routing Views

Inline Harness Connector End Views

G102

In the left front of the engine compartment under battery tray

Harness Routing Views

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G103

In the left front of the engine compartment under battery tray

Harness Routing Views

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G104 (Pontiac Only)

In the left rear of the engine compartment

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G105 (Pontiac Only)

In the left rear of the engine compartment

Harness Routing Views

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G106 (Pontiac Only)

In the left rear of the engine compartment

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G110

On the left engine/transmission

Harness Routing Views

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G112

On the left engine/transmission

Harness Routing Views

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G201

On the steering column support bracket

Harness Routing Views

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G203 (Pontiac Only)

On the steering column support bracket

Harness Routing Views

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G204

On the steering column support bracket

Harness Routing Views

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G301

On the inside of the rear compartment lid (folding top only)

Harness Routing Views

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G302

At the right front of the passenger compartment at the rocker panel

Harness Routing Views

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G303

At the right front of the passenger compartment under passenger seat

Harness Routing Views

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G304

At the left front of the passenger compartment at rocker panel

Harness Routing Views

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P200

At the left rear engine compartment in the front of the dash

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P201

At the left lower instrument panel below the steering column

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P400

At the rear bumper

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P500

At the left front door to door jamb

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P600

At the right front door to door jamb

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P700

At the left rear door to door jamb

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P800

At the right rear door to door jamb

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S101 (VIN 4)

In the engine harness, at the front of the engine, approximately 33 cm (13 in) from the coolant fan connector

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S101 (VIN T)

In the engine harness, at the front of the engine, approximately 28 cm (11 in) from the coolant fan connector

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S102

In the engine harness, at the front left side of the engine, approximately 16 cm (6 in) from the engine compartment fuse/relay center

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S107 (VIN 4)

In the engine harness, at the front left side of the engine, approximately 34 cm (13 in) from the engine compartment fuse/relay center

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S107 (VIN T)

In the engine harness, at the front left side of the engine, approximately 20 cm (8 in) from the A/C compressor clutch connector

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S110 (VIN 4)

In the engine harness, at the front of the engine, approximately 20 cm (8 in) from the A/C compressor clutch connector

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S110 (VIN T)

In the engine harness, at the front of the engine, approximately 20 cm (8 in) from the A/C compressor clutch connector

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S111 (VIN 4)

In the engine harness, at the front left side of the engine, approximately 20 cm (8 in) from the A/C compressor clutch connector

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S111 (VIN T)

In the engine harness, at the front of the engine, approximately 20 cm (8 in) from the A/C compressor clutch connector

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S115

In the forward lamp harness, approximately 50 cm (20 in) from the C101

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S117

In the forward lamp harness, approximately 44 cm (17 in) from C101

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S118

In the forward lamp harness, approximately 29 cm (11 in) from C101

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S119

In the forward lamp harness, approximately 33 cm (13 in) from the horn

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S121 (VIN 4)

In the engine harness, front of the engine, approximately 27 cm (11 in) from C100

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S121 (VIN T)

In the engine harness, front of the engine, approximately 32 cm (12.5 in) from C100

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S122

In the forward lamp harness, approximately 52.5 cm (21 in) from the horn connector

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S124

In the HVAC wiring harness, approximately 78 cm (31 in) from C204

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S125

In the HVAC wiring harness, approximately 85 cm (33 in) from C205

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S151

In the forward lamp harness, approximately 12.5 cm (5 in) from C101

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S152

In the forward lamp harness, approximately 12.5 cm (5 in) from C101

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S153

In the forward lamp harness, approximately 95.5 cm (37.5 in) from C101

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S154

In the forward lamp harness, approximately 95.5 cm (37.5 in) from C101

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S165

In the fuel injector harness, approximately 29.5 cm (11.5 in) from C118

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S171 (VIN 4)

In the engine harness, approximately 54.5 cm (21.5 in) from C100

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S171 (VIN T)

In the engine harness, approximately 54.5 cm (21.5 in) from C101

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S200

In the dash harness, approximately 41.5 cm (16 in) from P201

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S201

In the dash harness, approximately 35 cm (14 in) from P201

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S202

In the dash harness, approximately 30 cm (12 in) from P201 toward the column switches

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S203

In the dash harness, approximately 29 cm (11 in) from the electronic brake control module connector

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v

S204

In the dash harness, approximately 28.5 cm (11 in) from P201

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S205

In the dash harness, approximately 51 cm (20 in) form P201 toward the instrument cluster connectors

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S206

In the dash harness, approximately 21.5 cm (8.5 in) from P201 toward the instrument cluster connectors

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S207

In the dash harness, approximately 22 cm (8.5 in) from P201

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S209

In the dash harness, approximately 71 cm (28 in) from P201 toward the data link connector

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S210

In the dash harness, approximately 4 cm (1.5 in) from P201 toward the electronic brake control module connector 2

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S211

In the radio harness, approximately 26 cm (10 in) from C205

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S212

In the body harness, approximately 105 cm (41 in) from P500

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S213

In the dash harness, approximately 64.5 cm (24 in) from P201 toward the data link connector

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S214

In the dash harness, approximately 18 cm (7 in) from the electronic brake control module connector 2

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S215

In the dash harness, approximately 85 cm (33 in) from P201 toward the sensing diagnostic module connector

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S216

In the dash harness, approximately 15 cm (6 in) from P210 toward the instrument cluster connectors

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S217

In the dash harness, approximately 43 cm (17 in) from P210 toward the instrument cluster connector

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S218

In the dash harness, approximately 65.5 cm (26 in) from P201 toward the passenger inflator module connector

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S219

In the dash harness, approximately 30 cm (12 in) from P201 toward the instrument cluster connectors

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S220

In the dash harness, approximately 36.5 cm (14 in) from P201 toward the instrument cluster connectors

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S221

In the dash harness, approximately 59 cm (23 in) from P201 toward the passenger inflator module connector

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S222

In the dash harness, aproximately 47.5 cm (18.5 in) from the IP compartment lamp connector

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S223

In the radio harness, approximately 20 cm (8 in) from C205

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S224

In the dash harness, approximately 72 cm (28 in) from P201 toward the passenger inflater module connector

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S225

In the dash harness, aproximately 15.5 cm (6 in) from P201

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S226 (Pontiac only)

In the radio harness, approximately 32.5 cm (13 in) from C205

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S227

In the body harness, approximately 95 cm (37 in) from P500 rearward

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S227 (folding top)

In the body harness, approximately 117 cm (46 in) from P500 rearward

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S228

In the body harness

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S229

In the body harness

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S231

IN the lamp dimmer harness, approximately 16 cm (6 in) from C201

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S232

In the lamp dimmer harness, approximately 19 cm (7.5 in) from the panel dimmer switch connector

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S233

In the HVAC harness, approximately 93 cm (37 in) from C204

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S234

In the body harness

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S240 (Chevrolet only)

In the forward lamp harness, approximately 36.5 cm (14 in) from C101

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S241 (Chevrolet only)

In the foreword lamp harness, approximately 32.5 cm (13 in) from C102

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S242

In the dash harness, approximately 84 cm (33 in) fro P201 toward the data link connector

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S243 (Pontiac only)

In the forward lamp harness, approximately 35.5 cm (14 in) from C101

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S244

In the forward lamp harness, approximately 17.0 (7 in) from the right headlamp breakout

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S246

In the dash harness, approximately 25.5 cm (11 in) from P201 toward the column switches

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S248

In the body harness, approximately 62 cm (24 in) from P600 rearward

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S248

In the body harness, approximately 38 cm (15 in) from P500 rearward

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S277

In the dash harness, approximately 77.5 cm (30.5 in) from P201 toward the data link connector

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S280

In the HVAC harness, approximately 58 cm (23 in) from C204

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S281

In the HVAC harness, approximately 98.5 cm (39 in) from C204

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S300

In the body harness, approximately 93 cm (37 in) from P600 rearward

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S300 (folding top)

In the body harness, approximately 102 cm (40 in) from P600 rearward

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S301

In the body harness, approximatley 41.5 cm (16 in) from the seat belt switch connector, toward the left side of the car

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S301 (folding top)

In the body harness, approximately 50 cm (20 in) from the seat belt switch connector toward right the right side of the car

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S302 (coupe)

In the body harness, approximately 257 cm (101 in) from P500 rearward

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S303 (coupe)

In the body harness, approximately 70 cm (27.5 in) fro P600 rearward

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S303 (folding top)

In the body harness, approximately 45 cm (18 in) from P500 rearward

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S303 (sedan)

In the body harness, approximately 47 cm (18.5 in) from the park brake switch toward the right side of the car

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S304

In the body harness, approximately 137 cm (54 in) from P500 rearward

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S305 (coupe)

In the body harness, approximately 102 cm (40 in) from the seat belt switch connector toward the left front of the car

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S305 (folding top)

In the body harness, approximately 108.5 cm (43 in) from the seat belt switch connector, toward the left side of the car

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S305 (sedan)

In the body harness, approximately 41.5 cm (16 in) from the seat belt switch connector, toward the right side of the car

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S306

In the body harness, approximately 69 cm (27 in) from the seat belt switch connector, toward the right side of the car

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S307

In the body harness, approximately 47 cm (18.5 in) from P500 rearward

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S330

In the body harness, approximately 143 cm (56 in) from the left tail/stop lamp connector forward

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S331

In the body harness, approximately 113 cm (45 in) from P600 rearward

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S331 (folding top)

In the body harness, approximately 122.5 cm (48 in) from P600 rearward

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S332

In the body harness, approximately 147 cm (58 in) from P500 rearward

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S350

In the headliner harness, approximately 105 cm (41 in) from the dome lamp connector

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S351

In the headliner harness, approximately 46 cm 18 in) from the dome lamp connector

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S352

In the headliner harness, approximately 56 cm (22 in) from the dome lamp connector

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S353

In the headliner harness, approximately 36 cm (14 in) from the dome lamp connector

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S371

In the body harness, approximately 21 cm (8 in) from the folding top motor connector forward

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S372

In the body harness, approximately 30 cm (12 in) from the folding top switch connector forward

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S400

In the body harness, approximately 86 cm (34 in) from the left tail/stop lamp connector forward

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S400 (folding top)

In the body harness, approximately 59 cm (23 in) from the right backup lamp connector

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