GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

Body Control Module (BCM)

Lower center of the IP, on the HVAC Case

Body Control System Component Views in Body Control System

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Body Control Module (BCM) Connector C1 (BRN) (24 Cavities)

Lower center of the IP, on the HVAC Case

Body Control System Component Views in Body Control System

Body Control System Connector End Views in Body Control System

Body Control Module (BCM) Connector C2 (LT BLU) (24 Cavities)

Lower center of the IP, on the HVAC Case

Body Control System Component Views in Body Control System

Body Control System Connector End Views in Body Control System

Body Relay Block

Left side of the dash, to the right of the IP fuse block

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Data Link Connector (DLC)

Lower left of the IP

Data Link Communications Component Views in Data Link Communications

Data Link Communications Connector End Views in Data Link Communications

Door Lock and Side Window Switch, LH

In the left door trim panel, near the armrest

Power Door Systems Component Views

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Door Lock and Side Window Switch, LH Connector C1 (11 Cavities)

In the left door trim panel, near the armrest

Power Door Systems Component Views

Power Door Systems Connector End Views

Door Lock and Side Window Switch, LH Connector C2 (8 Cavities)

In the left door trim panel, near the armrest

Power Door Systems Component Views

Power Door Systems Connector End Views

Door Lock and Side Window Switch, RH

In the right door trim panel, near the armrest

Power Door Systems Component Views

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Door Lock and Side Window Switch, RH Connector C1 (11 Cavities)

In the right door trim panel, near the armrest

Power Door Systems Component Views

Power Door Systems Connector End Views

Door Lock and Side Window Switch, RH Connector C2 (3 Cavities)

In the right door trim panel, near the armrest

Power Door Systems Component Views

Power Door Systems Connector End Views

Door Lock Cylinder Switch, LH

Part of the door latch assembly

Power Door Systems Component Views

Power Door Systems Connector End Views

Door Lock Cylinder Switch, RH

Part of the door latch assembly

Power Door Systems Component Views

Power Door Systems Connector End Views

Door Lock Relay

In the body relay block

Power and Grounding Component Views in Wiring Systems

Electrical Center Identification Views in Wiring Systems

Door Unlock Relay

In the body relay block

Power and Grounding Component Views in Wiring Systems

Electrical Center Identification Views in Wiring Systems

Driver Door Unlock Relay

In the body relay block

Power and Grounding Component Views in Wiring Systems

Electrical Center Identification Views in Wiring Systems

Electronic Climate Control (ECC) Module

The center of the IP, below the radio

HVAC Component Views in HVAC System with A/C - Automatic

HVAC Connector End Views in HVAC System with A/C - Automatic

Endgate Lock Cylinder Switch

Top center of the endgate

Body Rear End Component Views in Body Rear End

Power Door Systems Connector End Views

Heater and A/C Controller (Manual)

In the center of the IP

HVAC Component Views in HVAC Systems - Manual

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Heater and A/C Controller (w/ Manual A/C) Connector C5 (4 Cavities) (Except Base Pickup)

Between connectors C1 and C3

HVAC Component Views in HVAC Systems - Manual

HVAC Connector End Views in HVAC Systems - Manual

IP Fuse Block

LH of the IP, near the side door jamb switch

Power and Grounding Component Views in Wiring Systems

Electrical Center Identification Views in Wiring Systems

Liftgate Lock Actuator

Bottom center of the liftgate

Power Door Systems Component Views

Power Door Systems Connector End Views

Liftgate Lock Cylinder Switch

Bottom center of the liftgate

Power Door Systems Component Views

Power Door Systems Connector End Views

Outside Rear View Folding Mirror Switch

On the top of the left door trim panel

Power Door Systems Component Views

Power Door Systems Connector End Views

Outside Rear View Mirror, LH (10 Cavities)

Door harness to outside rear view mirror pigtail connector

Power Door Systems Component Views

Power Door Systems Connector End Views

Outside Rear View Mirror, RH (10 Cavities)

Door harness to outside rear view mirror pigtail connector

Power Door Systems Component Views

Power Door Systems Connector End Views

Outside Rear View Mirror Switch

In the left door trim panel, beside the armrest

Power Door Systems Component Views

Power Door Systems Connector End Views

Rear Window Defogger Relay (Utility)

In the underhood fuse block

Power and Grounding Component Views in Wiring Systems

Electrical Center Identification Views in Wiring Systems

Rear Window Defogger Switch (Utility w/ Manual A/C)

Part of the heater and A/C controller

HVAC Component Views in HVAC Systems - Manual

Stationary Windows Connector End Views in Stationary Windows

Rear Window Defogger Switch (Utility w/ Automatic A/C)

Part of the electronic climate control module

HVAC Component Views in HVAC Systems - Automatic

Stationary Windows Connector End Views in Stationary Windows

Remote Control Door Lock Receiver

On the left IP sound insulator

Keyless Entry Component Views in Keyless Entry

Keyless Entry Connector End Views in Keyless Entry

Side Door Lock Actuator, LR

Rear of the LR side door

Power Door Systems Component Views

Power Door Systems Connector End Views

Side Door Lock Actuator, RR

Rear of the RR side door

Power Door Systems Component Views

Power Door Systems Connector End Views

Side Door Lock Actuator, LF

Part of the door latch assembly

Power Door Systems Component Views

Power Door Systems Connector End Views

Side Door Lock Actuator, RF

Part of the door latch assembly

Power Door Systems Component Views

Power Door Systems Connector End Views

Side Window Regulator Motor, LF

In the LF Side Door

Power Door Systems Component Views

Power Door Systems Connector End Views

Side Window Regulator Motor, RF

In the RF Side Door

Power Door Systems Component Views

Power Door Systems Connector End Views

Side Window Regulator Motor, LR

In the LR door

Power Door Systems Component Views

Power Door Systems Connector End Views

Side Window Regulator Motor, RR

In the RR door

Power Door Systems Component Views

Power Door Systems Connector End Views

Side Window Lockout Switch

The second connector from the front at the LF armrest

Power Door Systems Component Views

Power Door Systems Connector End Views

Side Window Switch, LR

On the LR door armrest

Power Door Systems Component Views

Power Door Systems Connector End Views

Side Window Switch, RR

On the RR door armrest

Power Door Systems Component Views

Power Door Systems Connector End Views

Underhood Fuse Block

On the top of the left inner wheelwell

Power and Grounding Component Views in Wiring Systems

Electrical Center Identification Views in Wiring System

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

C203 (116 Cavities)

Body harness to IP harness, to the right of the IP

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C304 (6 Cavities) (4-Door Utility)

Body harness to LR door harness, near the LR door

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C306 (6 Cavities) (4-Door Utility)

Body harness to RR door harness, near the RR door

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C413 (6 Cavities) (Utility w/ Endgate)

Body harness to endgate harness, to the rear left center of the body, at the endgate

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C426 (8 Cavities) (Utility w/ Liftgate)

Body harness to liftglass harness in-line connector, near the upper left corner of the liftgate

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C500 (4 Cavities) (w/o Power Locks/Windows)

Body harness to LF door harness, in the LF door

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C500 (22 Cavities) (w/ Power Locks/Windows)

Body harness to LF door harness, in the LF door

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C501 (16 Cavities) (4-Door Utility only)

Body harness to LF door harness, in the LF door

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C502 (Cavities) (2-Door Export only)

Body harness to LF door harness, in the LF door

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C601 (4 Cavities) (w/o Power Locks/Windows)

Body harness to RF door harness, in the RF door

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C601 (22 Cavities) (w/ Power Locks/Windows)

Body harness to RF door harness, in the RF door

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

G200

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

Harness Routing Views in Wiring Systems

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G201

(CKT 1850) Body harness, to the LF of the IP, above P100, above G200 and G202

Harness Routing Views in Wiring Systems

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G202

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

Harness Routing Views in Wiring Systems

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G203

(CKT 1050) Body harness, to the right of the IP, between C203 and the splice packs, breakout from harness mounted to bulkhead

Harness Routing Views in Wiring Systems

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G204

(CKT 1050) Body harness, to the right of the IP, between C203 and the splice packs, breakout from harness/mounted to bulkhead

Harness Routing Views in Wiring Systems

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G205

(CKT 1050) Body harness, to the right of the IP, between C203 and the splice packs, breakout from harness/mounted to bulkhead

Harness Routing Views in Wiring Systems

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P100

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

Harness Routing Views in Wiring Systems

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P500

Body harness to the LF door pass-through, between the body and the LF door

Harness Routing Views in Wiring Systems

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P501

LF door to outside rear view mirror, in the LF door, at the outside rear view mirror

Harness Routing Views in Wiring Systems

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P600

Body harness to RF door pass-through, between the body and the RF door

Harness Routing Views in Wiring Systems

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P601

RF door to outside rear view mirror, in the RF door, at the outside rear view mirror

Harness Routing Views in Wiring Systems

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P700 (4-Door Utility) (LR)

Body to LR door harness

Harness Routing Views in Wiring Systems

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P800 (4-Door Utility) (RR)

Body to RR door

Harness Routing Views in Wiring Systems

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P900 (Utility w/ Endgate)

Body to the endgate, between the body harness and the endgate

Harness Routing Views in Wiring Systems

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P901 (Utility w/ Liftgate)

Body to the LH liftgate harness, in the left side of the liftgate

Harness Routing Views in Wiring Systems

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S290

(CKT 1301) IP harness, between the breakout to C205

Harness Routing Views in Wiring Systems

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S306 (4-Door Utility)

(CKT 1307) Body harness, on the breakout to the LR door, on the pillar, 10 cm (3.9 in) above the harness clip

Harness Routing Views in Wiring Systems

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S307 (4-Door Utility)

(CKT 294) Body harness, on the breakout to the RR door, on the pillar, 10 cm (3.9 in) above the harness clip

Harness Routing Views in Wiring Systems

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S308 (4-Door Utility)

(CKT 295) Body harness, on the breakout to the LR door, on the pillar, 7 cm (2.7 in) below the harness clip

Harness Routing Views in Wiring Systems

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S476 (Envoy only)

(CKT 1301) Body harness, 7 cm (2.8 in) from G450 breakout toward the rear of vehicle

Harness Routing Views in Wiring Systems

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S501

(CKT 1850) LH door harness, between breakout to door speaker and door lock and side window switch

Harness Routing Views in Wiring Systems

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S601

(CKT 1050) RH door harness

Harness Routing Views in Wiring Systems

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Splice Pack SP202

(CKT 379, CKT 1850) Strapped to the body harness, at the left center of the IP

Harness Routing Views in Wiring Systems

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Splice Pack SP203

(CKT 1050) IP harness, on the IP, behind HVAC controls, 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 right front of the IP, to the left of SP200

Harness Routing Views in Wiring Systems

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