GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

Body Control Module (BCM)

Lower rear of the IP, on the heater case

Body Control System Component Views in Body Control System

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

Lower rear of the IP, on the heater 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 rear of the IP, on the heater 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

Driver Information Display Module

Front overhead console, in the passenger compartment

Driver Information System Components Views in Instrument Panel, Gauges and Console

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Driver Information Display Module  C1 (9 Cavities) (w/ Trip Computer)

Front overhead console, in the passenger compartment

Driver Information System Components Views in Instrument Panel, Gauges and Console

Driver Information Systems Connector End Views in Instrument Panel, Gauges and Console

Electronic Brake Control Module (EBCM) (310 Series)

On the brake pressure modulator valve (BPMV), toward the rear of the LF fenderwell

Antilock Brake System Component Views in Antilock Brake System

Antilock Brake System Connector End Views in Antilock Brake System

Electronic Brake Control Module (EBCM) (310 Series) Connector C1 (10 Cavities) (BLK)

The body harness connector on the left side of the EBCM

Antilock Brake System Component Views in Antilock Brake System

Antilock Brake System Connector End Views in Antilock Brake System

Electronic Brake Control Module (EBCM) (325 Series)

On the brake pressure modulator valve (BPMV), toward the rear of the LF fenderwell

Antilock Brake System Component Views in Antilock Brake System

Antilock Brake System Connector End Views in Antilock Brake System

Electronic Brake Control Module (EBCM) (325 Series) Connector C1 (16 Cavities) (BLK)

The body harness connector on the left side of the EBCM

Antilock Brake System Component Views in Antilock Brake System

Antilock Brake System Connector End Views in Antilock Brake System

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

Inflatable Restraint Sensing and Diagnostic Module (SDM)

Between the LF and RF seats, below the console and the carpeting

SIR Component Views in SIR

SIR Connector End Views in SIR

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

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

Powertrain Control Module (PCM)

On the right side of the engine compartment

Engine Controls Component Views in Engine Controls - 2.2L

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Powertrain Control Module (PCM) Connector C1 (2.2L)

On the right side of the engine compartment

Engine Controls Component Views in Engine Controls - 2.2L

Powertrain Control Module Connector End Views in Engine Controls - 2.2L

Seat Adjuster Memory Module, LH

Under the left seat

Power Seat Component Views in Seats

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Seat Adjuster Memory Module, LH Connector C1 (18 Cavities)

Under the left seat

Power Seat Component Views in Seats

Power Seat Connector End Views in Seats

Transfer Case Shift Control Module (NP4)

Behind the RF kick panel, the lower connector

Transfer Case Control Component Views in Transfer Case - NVG 136 (NP4)

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Transfer Case Shift Control Module (NP8)

Behind the RF kick panel, the lower connector

Transfer Case Control Component Views in Transfer Case - NVG 236 (NP8)

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Transfer Case Shift Control Module Connector C1 (32 Cavities) (NP4)

Behind the RF kick panel, the lower connector

Transfer Case Control Component Views in Transfer Case - NVG 136 (NP4)

Transfer Case Control Connector End Views in Transfer Case - NVG 136 (NP4)

Transfer Case Shift Control Module Connector C1 (32 Cavities) (NP8)

Behind the RF kick panel, the lower connector

Transfer Case Control Component Views in Transfer Case - NVG 236 (NP8)

Transfer Case Control Connector End Views in Transfer Case - NVG 236 (NP8)

Transfer Case Shift Control Module (NP1)

Behind the RF kick panel

Transfer Case Control Component Views in Transfer Case - NVG 233 (NP1)

Transfer Case Control Connector End Views in Transfer Case - NVG 233 (NP1)

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)

Right side of the engine compartment

Engine Controls Component Views in Engine Controls - 4.3L

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

Right side of the engine compartment

Engine Controls Component Views in Engine Controls - 4.3L

VCM Connector End Views in Engine Controls - 4.3L

Vehicle Interface Unit

Behind the RR outer panel

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C101 (16 Cavities) (2.2L)

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

Harness Routing Views in Wiring Systems

Inline Harness 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

C209 (16 Cavities) (Pickup)

Body harness to dome harness, at the LF of the IP, at the LF window

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C209 (16 Cavities) (Utility)

Body harness to dome harness, at the LF of the IP, at the LF window A-Pillar

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C317 (6 Cavities) (Utility)

Body harness to LF seat belt switch and power seats, under the LF seat

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C474 (24 Cavities) (Vehicle Interface Unit, Connector C1) (Envoy only)

In the rear quarter of the vehicle

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Inline Harness Connector End Views in Wiring Systems

G103 (2.2L)

(CKT 351) Engine harness, RF of the engine block, under the generator

Harness Routing Views in Wiring Systems

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G103 (4.3L)

(CKT 351) Engine harness, RR of the cylinder head

Harness Routing Views in Wiring Systems

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G105 (2.2L)

(CKT 450, CKT 451) Engine harness, to the RR of the engine block, near the electronic ignition control module

Harness Routing Views in Wiring Systems

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G105 (4.3L)

(CKT 450, CKT 451) Engine harness, LR of the cylinder head

Harness Routing Views in Wiring Systems

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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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P100

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

Harness Routing Views in Wiring Systems

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S106 (2.2L)

(CKT 351) Engine harness, between the breakouts to the PCM and to the fuel injector connector, 25 cm (10 in) from the breakouts to the PCM

Harness Routing Views in Wiring Systems

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S106 (4.3L)

(CKT 351) Engine harness, between the breakouts to the rear heated oxygen sensors connector and the body harness connector, 7 cm (2.8 in) from the breakout to the heated oxygen sensor connector

Harness Routing Views in Wiring Systems

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S152 (2.2L)

(CKT 351, CKT 413, CKT 451) Engine harness, between the breakouts for the fuel injector connector and the ignition control module, 7 cm (2.8 in) from G105

Harness Routing Views in Wiring Systems

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S152 (4.3L)

(CKT 351, CKT 413, CKT 451) Engine harness, between the breakouts for the LR and RR engine block grounds, 13 cm (5.1 in) from the breakout to the LR engine grounds

Harness Routing Views in Wiring Systems

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Splice Pack SP201

Body harness, to the left of the IP, below the IP fuse block, taped to the body harness

Harness Routing Views in Wiring Systems

Data Link Communications Connector End Views in Data Link Communications

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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