GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

Automatic Transfer Case Control Module

Under LH side of IP, near Convenience Center

Transfer Case Control Component Views

Transfer Case Control Connector End Views

Convenience Center

Under LH of IP, on Bulkhead

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Cruise Control Module

LR of Engine Compartment, near Bulkhead

Cruise Control Component Views in Cruise Control

Cruise Control Connector End Views in Cruise Control

Selectable Four-Wheel Drive Indicator

Center floor console

Transfer Case Control Component Views

Transfer Case Control Connector End Views

Front Axle Actuator

RH rear side of the front drive axle

Transfer Case Control Component Views

Transfer Case Control Connector End Views

IP Fuse Block

LH of IP, near LF Door Jamb Switch

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Instrument Cluster

Upper LH of IP, near Steering Column

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

Park/Neutral Position Switch

At LH Center of Transmission

Automatic Transmission Electronic Component Views in Automatic Transmissions-4L60-E or Automatic Transmission Electronic Component Views in Automatic Transmissions-4L80-E

Automatic Transmission Internal Connector End Views in Automatic Transmissions-4L60-E or Automatic Transmission Internal Connector End Views in Automatic Transmissions-4L80-E

Powertrain Control Module

Under RH end of IP, above Blower Motor, behind IP Compartment Box

Engine Controls Component Views in Engine Controls (6.5L)

Powertrain Control Module Connector End Views in PCM Connector End Views

Radio

Center of IP

Entertainment Component Views in Entertainment

Entertainment Connector End Views in Entertainment

Stoplamp Switch

Top of Brake Pedal

Hydraulic Brake Component Views in Hydraulic Brakes

Hydraulic Brake Connector End Views in Hydraulic Brakes

Transfer Case Control Module (TCCM)

Under the I/P on the steering column support bracket

Transfer Case Control Component Views

Transfer Case Control Connector End Views

Transfer Case Encoder Motor

RH side, center of the transfer case

Transfer Case Control Component Views

Transfer Case Control Connector End Views

Transfer Case Mode Selector Illumination Lamp

In the Switch

Transfer Case Control Component Views

Transfer Case Control Connector End Views

Transfer Case Relay

RH rear of the engine compartment, near the center of the cowl

Transfer Case Control Component Views

Transfer Case Control Connector End Views

Transfer Case Select Switch

On the I/P

Transfer Case Control Component Views

Transfer Case Control Connector End Views

Transfer Case Switch (M30)

LH top of the transfer case

Transfer Case Control Component Views

Transfer Case Control Connector End Views

Transfer Case Switch (MG5)

LH top of the transfer case

Transfer Case Control Component Views

Transfer Case Control Connector End Views

Transfer Case Switch (MT1)

LH top of the transfer case

Transfer Case Control Component Views

Transfer Case Control Connector End Views

Transfer Case Switch (MW3)

LH top of the transfer case

Transfer Case Control Component Views

Transfer Case Control Connector End Views

Transfer Case Synchronizer

Top of the transfer case

Transfer Case Control Component Views

Transfer Case Control Connector End Views

Vehicle Control Module

Engine Compartment, near EBCM

Engine Controls Component Views in Engine Controls(4.3L), Engine Controls Component Views in Engine Controls(5.0/5.7L), or Engine Controls Component Views in Engine Controls(7.4L)

VCM Connector End Views in Engine Controls(4.3L), VCM Connector End Views in Engine Controls(5.0/5.7L), or VCM Connector End Views in Engine Controls(7.4L)

Vehicle Speed Sensor Buffer

Under RH of IP

Engine Controls Component Views in Engine Controls(6.5L)

Engine Controls Connector End Views in Engine Controls(6.5L)

C100

Engine Harness to IP Harness, LR of Engine Compartment, at Bulkhead

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C120

Rear of the engine, near the transmission

Harness Routing Views in Wiring Systems

Transfer Case Control Connector End Views

C131

IP Harness, approx. 8 cm from Wiper Motor Breakout

Harness Routing Views in Wiring Systems

Harness Routing Views in Wiring Systems

C132

IP Harness, approx. 8 cm from Wiper Motor Breakout

Harness Routing Views in Wiring Systems

Harness Routing Views in Wiring Systems

C200

Behind RH of IP, near Heater Motor, in foam wrap

Harness Routing Views in Wiring Systems

Harness Routing Views in Wiring Systems

C210

At Convenience Center

Harness Routing Views in Wiring Systems

Harness Routing Views in Wiring Systems

C224

LH rear of the engine compartment, under the brake master cylinder

Harness Routing Views in Wiring Systems

Harness Routing Views in Wiring Systems

C225

LH rear of the engine compartment, under the brake master cylinder

Harness Routing Views in Wiring Systems

Harness Routing Views in Wiring Systems

C227

Near Stoplamp Switch

Harness Routing Views in Wiring Systems

Harness Routing Views in Wiring Systems

C228

Crossbody Harness to RF Seat

Harness Routing Views in Wiring Systems

Harness Routing Views in Wiring Systems

C298

RH Side of IP

Harness Routing Views in Wiring Systems

Harness Routing Views in Wiring Systems

G103

RF of Engine, front of Intake Manifold

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

G104

RF of Engine

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

G105 (Diesel)

RH top of the cylinder head

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

G200

Behind LH of IP, below Fuse Block

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

G202

RH of IP, mounted to HVAC Plenum Bracket

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

P100

LH rear of the engine compartment, at the bulkhead

Harness Routing Views in Wiring Systems

Harness Routing Views in Wiring Systems

S103

Engine Harness, Approx. 13 cm from EGR Valve Breakout, toward Taillamp Harness Breakout

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S111

Engine Harness, Approx. 10 cm from EBCM Breakout

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S107

Engine Harness, Approx. 18 cm from EBCM Breakout, toward EGR Valve Breakout

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S147

Engine Harness, Approx. 8 cm from EGR Valve Breakout

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S204

IP Harness, approx. 10 cm from Steering Column Harness Breakout

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S213

IP Harness, approx. 4 cm from Steering Column Harness Breakout

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S215

IP Harness, approx. 8 cm from Instrument Cluster Breakout, toward Radio Connectors Breakout

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S221

IP Harness, approx. 40 cm from Instrument Cluster Breakout

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S235

IP Harness, approx. 8 cm from Steering Column Harness Breakout

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S236

IP Harness, approx. 10 cm from Steering Column Harness, near P100

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S298

IP Harness, approx. 24 cm from Instrument Cluster Breakout, toward Radio Breakout

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S302

Selectable 4WD Harness, approx. 10 cm from Transfer Case Relay Breakout, toward Front Axle Switch

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