GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

Body Relay Block

LH of the dash, right 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) Connector C2, Blue (24 Cavities)

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

Data Link Connector (DLC)

Lower LH of the IP

Data Link Communications Component Views in Data Link Communications

Data Link Communications Connector End Views in Data Link Communications

Electric Shift Transfer Case (8 Cavities)

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Transfer Case Control Component Views

Transfer Case Control Connector End Views

Four Wheel Drive Indicator Switch

At the front axle, RH of the differential

Transfer Case Control Component Views

Transfer Case Control Connector End Views

IP Fuse Block

LH of the IP, near the side door jamb switch, LF

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Stoplamp Switch

Mounted on the brake pedal

Lighting Systems Component Views in Lighting Systems

Lighting Systems Connector End Views in Lighting Systems

Transfer Case Shift Control Switch (w/ Push Button Control) Connector C1 (8 Cavities)

Right of the instrument panel cluster

Transfer Case Control Component Views

Transfer Case Control Connector End Views

Transfer Case Shift Control Switch (w/ Push Button Control) Connector C2 (4 Cavities)

Right of the instrument panel cluster

Transfer Case Control Component Views

Transfer Case Control Connector End Views

Transfer Case Shift Control Module

Behind RH front kick panel, the lower connector

Transfer Case Control Component Views

Transfer Case Control Connector End Views

Underhood Fuse Block

On the top of the left inner wheelwell

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) (4.3L Engine)

RH of the engine compartment

Engine Controls Component Views in Engine Controls - 4.3L

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Vehicle Control Module (VCM) (4.3L Engine) Connector C4 (24 Cavities)

RH of the engine compartment

Engine Controls Component Views in Engine Controls - 4.3L

Engine Controls Connector End Views in Engine Controls - 4.3L

C101 (16 Cavities) (2.2L Engine)

Engine harness to body harness, RH of the engine compartment, near the PCM

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C101 (10 Cavities) (4.3L Engine)

Engine harness to body harness, RH of the engine compartment, near the VCM

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C108 (16 Cavities) (w/o Auto 4WD) (Except Bravada)

Transfer case extension harness to body harness, LH rear engine compartment near cowl penetration P100

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C114 (2 Cavities)

Body harness to transfer case shift control harness, LH rear engine compartment near cowl penetration P100

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C203 (116 Cavities)

Body harness to IP harness, to the RH of the IP

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

G203

(CKT 1050) Body harness, to the RH of the IP, between C203 and the splice packs

Harness Routing Views in Wiring Systems

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G204

(CKT 1050) Body harness, to the RH of the IP, between C203 and the splice packs

Harness Routing Views in Wiring Systems

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G205

(CKT 1050) Body harness, to the RH of the IP, between C203 and the splice packs

Harness Routing Views in Wiring Systems

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P100

IP bulkhead pass-through, LH rear of the engine compartment, on the cowl

Harness Routing Views in Wiring Systems

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S121

(CKT 1695) body harness, 6.5 cm (2.6 in) from the breakout to the blower motor

Harness Routing Views in Wiring Systems

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S205

(CKT 1220) IP harness, between the breakouts for the radio and BCM connector C3, 8 cm (3.15 in) from the breakout to the radio

Harness Routing Views in Wiring Systems

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S208 (w/o Auto A/C)

(CKT 40) IP harness, between the breakouts to the radio and to the RH console courtesy lamp, 4 cm (1.57 in) from the breakout to the lamp

Harness Routing Views in Wiring Systems

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S208 (w/ Auto A/C)

(CKT 40) IP harness, between the breakouts for the BCM connector C3 and the stereo radio, 6 cm (2.36 in) from the breakout to the BCM

Harness Routing Views in Wiring Systems

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Splice Pack SP200

(CKT 41, CKT 241, CKT 341, CKT 817) Strapped to the body harness, in the center front of the IP, to the RH of SP204

Harness Routing Views in Wiring Systems

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Splice Pack SP203

(CKT 1050) IP harness, on the IP, in front of the ashtray, strapped to the body harness

Harness Routing Views in Wiring Systems

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Splice Pack SP204

(CKT 584, CKT 1414, CKT 1415, CKT 1050) Strapped to the body harness, in the center front of the IP, to the LH of SP200

Harness Routing Views in Wiring Systems

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