GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

Body Relay Block

RH of the IP, left of the IP fuse block

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Clutch Pedal Position (CPP) Switch

On the Clutch support bracket

Engine Electrical Component Views in Engine Electrical

Engine Electrical Connector End Views in Engine Electrical

Four Wheel Drive Indicator Switch

At the front axle, RH of the differential

Transfer Case Control Component Views in Transfer Case - NP8

Transfer Case Control Connector End Views in Transfer Case - NP8

Front Drive Axle Clutch Solenoid

In the left rear of the engine compartment, near the cowl

Transfer Case Control Component Views in Transfer Case - NP8

Transfer Case Control Connector End Views in Transfer Case - NP8

Instrument Cluster

In the IP, ahead of the 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

IP Fuse Block

RH of the IP, near the side door jamb switch

Power and Grounding Component Views in Wiring Systems

Electrical Center Identification Views in Wiring Systems

Transfer Case Encoder Motor

RH of the ATC, below the rear transfer case speed sensor connector

Transfer Case Control Component Views in Transfer Case - NP8

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Transfer Case Encoder Motor Connector C1 (4 cavities)

RH of the ATC, below the rear transfer case speed sensor connector

Transfer Case Control Component Views in Transfer Case - NP8

Transfer Case Control Connector End Views in Transfer Case - NP8

Transfer Case Encoder Motor Connector C2 (6 cavities)

RH of the ATC, below the rear transfer case speed sensor connector

Transfer Case Control Component Views in Transfer Case - NP8

Transfer Case Control Connector End Views in Transfer Case - NP8

Transfer Case Shift Control Module

Behind LH Front kick panel

Transfer Case Control Component Views in Transfer Case - NP8

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Transfer Case Shift Control Module Connector C1 (32 Cavities)

Behind LH Front kick panel, the lower connector

Transfer Case Control Component Views in Transfer Case - NP8

Transfer Case Control Connector End Views in Transfer Case - NP8

Transfer Case Shift Control Module Connector C2 (4 Cavities)

Behind LH Front kick panel, the upper connector

Transfer Case Control Component Views in Transfer Case - NP8

Transfer Case Control Connector End Views in Transfer Case - NP8

Transfer Case Shift Control Switch

Left of the Instrument Panel Cluster

Transfer Case Control Component Views in Transfer Case - NP8

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Transfer Case Shift Control Switch Connector C1(8 Cavities)

Left of the Instrument Panel Cluster

Transfer Case Control Component Views in Transfer Case - NP8

Transfer Case Control Connector End Views in Transfer Case - NP8

Transfer Case Shift Control Switch Connector C2(4 Cavities)

Left of the Instrument Panel Cluster

Transfer Case Control Component Views in Transfer Case - NP8

Transfer Case Control Connector End Views in Transfer Case - NP8

Transfer Case Front Propshaft Speed Sensor

Top Front LH Side of the Transfer Case

Transfer Case Control Component Views in Transfer Case - NP8

Transfer Case Control Connector End Views in Transfer Case - NP8

Transfer Case Rear Propshaft Speed Sensor

Top RH Rear of the Transfer Case, near the rear driveshaft

Transfer Case Control Component Views in Transfer Case - NP8

Transfer Case Control Connector End Views in Transfer Case - NP8

Underhood Fuse Block

On the top of the right inner fenderwell

Power and Grounding Component Views in Wiring Systems

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Underhood Fuse Block Connector C1 (68 cavities) (Body)

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) (Engine)

Below the underhood fuse block

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Vehicle Control Module (VCM)

LH of the engine compartment

Engine Controls Component Views in Engine Controls

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Vehicle Control Module (VCM) Connector C4 (24 cavities)

LH of the engine compartment

Engine Controls Component Views in Engine Controls

VCM Connector End Views in Engine Controls

C103 (16 cavities)

Engine harness to the body harness, near the VCM

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C114 (2 cavities)

Body harness to the front axle switch extension harness, to the left center of the engine compartment, near the EBCM

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C203 (116 cavities)

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

G103

(CKT 351) Engine harness, to the left rear of the cylinder head

Harness Routing Views in Wiring Systems

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G104

(CKT 450) Engine harness, to the right rear of the cylinder head

Harness Routing Views in Wiring Systems

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G105

(CKT 451) Engine harness, to the right rear of the cylinder head

Harness Routing Views in Wiring Systems

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G200

(CKT 1850) Body harness, to the left front of the IP, above P100

Harness Routing Views in Wiring Systems

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G201

(CKT 1850) Body harness, to the left front of the IP, above P100

Harness Routing Views in Wiring Systems

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P100

In the right rear side of the engine compartment, at the bulkhead, above C100

Harness Routing Views in Wiring Systems

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S106

(CKT 351) Engine harness, between the breakouts to the VCM connectors and the engine coolant temperature sensor connector, 27 cm (10.63 in) from the breakout for the VCM connnectors

Harness Routing Views in Wiring Systems

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S115

(CKT 1640)Body harness at the breakout to the park lamp switch relay connector

Harness Routing Views in Wiring Systems

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S116

(CKT 431) Body harness, 19.5 cm (7.68 in) from the breakout to the windshield wiper motor connector, toward the underhood fuse block

Harness Routing Views in Wiring Systems

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S140

(CKT 450, CKT 514) Engine harness between the breakouts to the RH rear VSS connector and the transfer case encoder motor connectors, 10 cm (4 in) from the transfer case connector breakout

Harness Routing Views in Wiring Systems

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S152

(CKT 351, CKT 451) Engine harness between the breakouts for the left rear and right rear engine block grounds, 15 cm (5.9 in) from the breakout to the right rear engine block ground

Harness Routing Views in Wiring Systems

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S201

(CKT 1807) Body harness 13 cm (5.2 in) from the BCM connnector breakout, toward C211

Harness Routing Views in Wiring Systems

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S203

(CKT 241) Body harness 39 cm (15.6 in) from the BCM connector breakout, toward C211

Harness Routing Views in Wiring Systems

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S209

(CKT 1850) Body harness 6.5 cm (2.56 in) from the BCM connector breakout toward C211

Harness Routing Views in Wiring Systems

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S211

(CKT 1050) In the body harness 6.5 cm (2.6 in) from the G203, G204, and G205 grounds breakout and the ground terminals

Harness Routing Views in Wiring Systems

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S223

(CKT 300) IP harness, near the IP fuse block, 8 cm (3.15 in) from C217

Harness Routing Views in Wiring Systems

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Splice Pack SP203

(CKT 1850) IP harness, on the IP, in front of the ashtray

Harness Routing Views in Wiring Systems

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