GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

Body Control Module (MALL)

Under the right side of the IP, near the rear of the IP compartment

Body Control System Component Views In Body Control System

--

Boost/Manifold Absolute Pressure (MAP) Sensor (Pontiac w/ U2F)

On the left rear of the engine, near the exhaust gas recirculation valve

--

--

Coolant Level Switch

In the right front of the engine compartment, in the right radiator tank

Instrument Cluster and HUD Component Views

--

Electronic Compass Module

In the left front of the rear compartment, under the rear shelf

Instrument Cluster and HUD Component Views

--

Engine Coolant Temperature (ECT) Sensor

On the left front of the engine, near the thermostat housing

Engine Controls Component Views in Engine Controls

Powertrain Control Module Connector End Views in Engine

Engine Oil Pressure Switch

On the right rear corner of the engine, below the power steering pump

Engine Controls Component Views in Engine Controls

Powertrain Control Module Connector End Views in Engine

Fuel Tank Unit

Under the center rear of the vehicle, in the top of the fuel tank

--

--

Head-Up Display (HUD) Module

In the left side top of the IP, under the upper IP pad

Instrument Cluster and HUD Component Views

Instrument Cluster and HUD Connector End Views

Headlamp Switch

In the left side of the IP, to the left of the steering column, in the LF door panel (Buick only)

--

--

Hood Ajar Switch

In the left front of the engine compartment, on the top of the radiator support

Lighting Systems Component Views in Lighting System

--

Ignition Control (IC) Module (VIN K)

On the right top of the engine, under the ignition coils

Engine Controls Component Views in Engine Controls

--

Ignition Control (IC) Module (VIN 1)

On the right top of the engine, under the ignition coils

Engine Controls Component Views in Engine Controls

--

Instrument Cluster

In the left side of the IP, above the steering column

--

--

IP Fuse Block

Under the left side of the IP, on the left IP sound insulator

Power and Grounding Component Views in Wiring Systems

Electrical Center Identification Views in Wiring Systems

IP Junction Block

Under the right side of the IP, near the rear of the IP compartment

Power and Grounding Component Views in Wiring Systems

Electrical Center Identification Views in Wiring Systems

Key-In-Ignition Switch

In the left front of the passenger compartment, in the steering column, near the ignition lock cylinder

--

--

Lamp Control Module (LCM) C1 (Buick)

In the center of the IP, below the center heater outlets

Lighting Systems Component Views in Lighting System

Lighting Systems Connector End Views in Lighting System

Lamp Control Module (LCM) C2 (Buick)

In the center of the IP, below the center heater outlets

Lighting Systems Component Views in Lighting System

Lighting Systems Connector End Views in Lighting System

LH Front Door Jamb Switch

At the rear of the left hand front door, on the door latch assembly

--

--

LH Rear Door Jamb Switch

At the rear of the left hand rear door, on the door latch assembly

Lighting Systems Component Views in Lighting System

--

Park/Neutral Position (PNP) Switch

On the left side of the transaxle, below the exhaust gas recirculation valve

Engine Controls Component Views in Engine Controls

Powertrain Control Module Connector End Views in Engine

Powertrain Control Module (PCM)

In the left front of the engine compartment, near the air cleaner housing

Engine Controls Component Views in Engine Controls

--

Rear Compartment Lid Latch Switch (Pontiac)

In the center of the rear compartment, on the rear compartment latch

Body Rear End Component Views in Body Rear End

Body Rear End Connector End Views in Body Rear End

Remote Function Actuator (RFA) Module

Under the right side of the IP, near the rear of the IP compartment

Keyless Entry Component Views in Keyless Entry

Keyless Entry Connector End Views in Keyless Entry

Remote Indicator Bank

In the left side of the IP, near the instrument cluster (top center of the IP for Buick only)

--

--

RH Front Door Jamb Switch

Rear of the right hand front door, on the door latch assembly

Lighting Systems Component Views in Lighting System

--

RH Rear Door Jamb Switch

Rear of the right hand rear door, on the door latch assembly

Lighting Systems Component Views in Lighting System

--

Turn Signal Flasher

Under the left side of the IP, near the IP fuse block

Lighting Systems Component Views in Lighting System

--

Windshield Washer Fluid Level Switch

In the left rear of the engine compartment, in the top of the windshield washer reservoir

Wiper/Washer System Component Views in Wipers/Washer

--

C101 (66 cavities)

The body harness to the engine harness, in the right rear of the engine compartment, near the strut tower

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C107 (8 cavities) (VIN 1)

The engine harness to the ignition harness, on the right front of the engine, near the ignition coils

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C107 (8 cavities) (VIN K)

The engine harness to the ignition harness, on the right front of the engine, near the ignition coils

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C200 (116 cavities)

The body harness to the IP harness, under the center of the IP

--

Inline Harness Connector End Views in Wiring Systems

C202 (48 cavities)

The body harness to the steering column harness, under the left side of the IP, to the left of the steering column

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C502 (6 cavities)

The body harness to the left front door trim harness, on the lower front of the left front door

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C603 (6 cavities)

The body harness to the right front door harness, on the lower front of the right front door

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C702 (4 cavities)

The body harness to the left rear door harness, on the lower front of the left rear door

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C802 (4 cavities)

The body harness to the right rear door harness, on the lower front of the right rear door

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

G101

On the right rear of the engine, below the power steering pump

Power and Grounding Component Views in Wiring Systems

--

G104

In the left front of the engine compartment, near the air cleaner housing

Power and Grounding Component Views in Wiring Systems

--

G105

In the right front of the engine compartment

Power and Grounding Component Views in Wiring Systems

--

G201

In the right front of the passenger compartment, behind the right kick panel trim plate

Power and Grounding Component Views in Wiring Systems

--

G202

In the left front of the passenger compartment, behind the left kick panel trim plate

Power and Grounding Component Views in Wiring Systems

--

G402 (Buick)

In the left side of the rear compartment, on the rear edge of the wheel house

Power and Grounding Component Views in Wiring Systems

--

G402 (Oldsmobile)

In the left side of the rear compartment, on the rear edge of the wheel house

Power and Grounding Component Views in Wiring Systems

--

G402 (Pontiac)

In the left side of the rear compartment, on the rear edge of the wheel house

Power and Grounding Component Views in Wiring Systems

--

P100

In the left rear of the engine compartment, near the left front strut tower

Harness Routing Views in Wiring Systems

--

P101

In the right rear of the engine compartment, near the right front strut tower

Harness Routing Views in Wiring Systems

--

P403

In the right front of the rear compartment, in the rear compartment floor

Harness Routing Views in Wiring Systems

--

P405 (Buick)

On the center rear of the rear compartment lid, near the lock cylinder

Harness Routing Views in Wiring Systems

--

P405 (Oldsmobile)

On the center rear of the rear compartment lid, near the lock cylinder

Harness Routing Views in Wiring Systems

--

P405 (Pontiac)

On the center rear of the rear compartment lid, near the lock cylinder

Harness Routing Views in Wiring Systems

--

P408

In the left center of the rear compartment, near the left wheel house

Harness Routing Views in Wiring Systems

--

P500

On the front of the left front door jamb, near the door hinges

Harness Routing Views in Wiring Systems

--

P600

On the front of the right front door jamb, near the door hinges

Harness Routing Views in Wiring Systems

--

P700

On the front of the left rear door jamb, near the door hinges

Harness Routing Views in Wiring Systems

--

P800

On the front of the right rear door jamb, near the door hinges

Harness Routing Views in Wiring Systems

--

S100

In the engine harness, approximately 34 cm (13.4 in) from the G101 breakout

--

--

S110 (VIN K)

In the engine harness, approximately 6.5 cm (2.6 in) from the generator breakout

--

--

S110 (VIN 1)

In the engine harness, approximately 6.5 cm (2.6 in) from the generator breakout

--

--

S121 (VIN K)

In the engine harness, approximately 32 cm (12.6 in) from C101

Harness Routing Views in Wiring Systems

--

S121 (VIN 1)

In the engine harness, approximately 32 cm (12.6 in) from C101

Harness Routing Views in Wiring Systems

--

S128

In the body harness, approximately 6.5 cm (2.6 in) from the engine cooling fan breakout

Harness Routing Views in Wiring Systems

--

S200

In the IP harness, approximately 7 cm (2.8 in) from the instrument cluster C2 breakout

--

--

S206

In the IP harness, approximately 52.5 cm (20.7 in) from the radio breakout

Harness Routing Views in Wiring Systems

--

S207

In the body harness, approximately 12 cm (4.7 in) from the center IP harness channel breakout

Harness Routing Views in Wiring Systems

--

S208

In the body harness, approximately 6 cm (2.4 in) from the center IP harness channel breakout

Harness Routing Views in Wiring Systems

--

S213 (Buick)

In the IP harness, approximately 4 cm (1.6 in) from the C200 breakout

Harness Routing Views in Wiring Systems

--

S213 (Pontiac)

In the IP harness, approximately 6 cm (2.4 in) from the IP compartment lamp breakout

Harness Routing Views in Wiring Systems

--

S214 (Buick)

In the IP harness, approximately 10.5 cm (4.1 in) from the C200 breakout

Harness Routing Views in Wiring Systems

--

S220

In the body harness, approximately 23.5 cm (9.3 in) from P100

Harness Routing Views in Wiring Systems

--

S223

In the body harness, approximately 4 cm (1.6 in) from the instrument cluster breakout

Harness Routing Views in Wiring Systems

--

S225

In the body harness, approximately 49.5 cm (19.5 in) from the top edge of the left kick wall channel

Harness Routing Views in Wiring Systems

--

S233

In the body harness, approximately 22 cm (8.7 in) into the C101 breakout

Harness Routing Views in Wiring Systems

--

S234 (Pontiac)

In the IP harness, approximately 11 cm (4.3 in) from the radio breakout

--

--

S237

In the body harness, approximately 22 cm (8.7 in) from the center IP harness channel breakout

Harness Routing Views in Wiring Systems

--

S241

In the body harness, approximately 40 cm (15.7 in) from the interior lamp control module breakout

Harness Routing Views in Wiring Systems

--

S242 (Buick)

In the IP harness, approximately 4 cm (1.6 in) into the instrument cluster C1 breakout

Harness Routing Views in Wiring Systems

--

S242 (Pontiac)

In the IP harness, approximately 7.5 cm (3 in) from the instrument cluster C1 breakout

Harness Routing Views in Wiring Systems

--

S246

In the body harness, approximately 8 cm (3.1 in) from the interior lamp control module breakout

Harness Routing Views in Wiring Systems

--

S255

In the IP harness, approximately 7 cm (2.8 in) from the instrument cluster C1 breakout

Harness Routing Views in Wiring Systems

--

S270

In the body harness, approximately 8 cm (3.1 in) from the edge of the right IP harness channel end

Harness Routing Views in Wiring Systems

--

S273

In the body harness, approximately 17 cm (6.7 in) into the C101 breakout

Harness Routing Views in Wiring Systems

--

S276

In the IP harness, approximately 142.5 cm (56.1 in) from C200

Harness Routing Views in Wiring Systems

--

S279

In the body harness, approximately 2 cm (0.8 in) from the edge of the right IP harness channel end

Harness Routing Views in Wiring Systems

--

S284

In the body harness, approximately 27 cm (10.6 in) from the interior lamp control module breakout

Harness Routing Views in Wiring Systems

--

S290

In the body harness, approximately 15 cm (5.9 in) from the IP junction block

Harness Routing Views in Wiring Systems

--

S291 (Pontiac)

In the IP harness, approximately 12 cm (4.7 in) from the IP compartment lamp breakout

Harness Routing Views in Wiring Systems

--

S293

In the body harness, approximately 4 cm (1.6 in) from the instrument cluster breakout

Harness Routing Views in Wiring Systems

--

S295

In the body harness, approximately 7 cm (2.8 in) from the left edge of the IP harness channel end

Harness Routing Views in Wiring Systems

--

S299 (Buick)

In the IP harness, approximately 12 cm (4.7 in) into the instrument cluster C1 breakout

--

--

S299 (Pontiac)

In the IP harness, approximately 12.5 cm (4.9 in) into the instrument cluster C1 breakout

Harness Routing Views

--

S307

In the body harness, approximately 33 cm (13 in) from the G201 breakout

Harness Routing Views in Wiring Systems

--

S308

In the body harness, approximately 33 cm (13 in) from the G201 breakout

Harness Routing Views in Wiring Systems

--

S309

In the body harness, approximately 15.5 cm (6.1 in) from the G201 breakout

Harness Routing Views in Wiring Systems

--

S310

In the body harness, approximately 9 cm (3.5 in) from the G201 breakout

--

--

S400 (Pontiac)

In the body harness, approximately 10 cm (3.9 in) from the G402 breakout

Harness Routing Views in Wiring Systems

--

S603

In the body harness, approximately 5.5 cm (2.2 in) from P600

Harness Routing Views in Wiring Systems

--

SP215

Under the right side of the IP, near the IP junction block

Harness Routing Views in Wiring Systems

--

SP332

In the right front of the passenger compartment, below the front door sill trim panel

Harness Routing Views in Wiring Systems

--

SP340

In the left front of the passenger compartment, below the front door sill trim panel

Harness Routing Views in Wiring Systems

--