GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

Body Bussed Electrical Center (BBEC)

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 C1, Brown (24 Cavities)

Lower rear of the IP, on the heater

Body Control System Component Views in Body Control Systems

Body Control System Connector End Views in Body Control 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 Systems

Body Control System Connector End Views in Body Control Systems

Data Link Connector (DLC)

Lower LH of the IP

Data Link Communications Component Views in Wiring Systems

Data Link Communications Connector End Views in Wiring Systems

Engine Oil Pressure Gauge Sensor (2.2L Engine)

RH side of engine, forward of coil pack

Engine Controls Component Views in Engine Controls - 2.2L

Engine Controls Connector End Views in Engine Controls - 2.2L

Engine Oil Pressure Gauge Sensor (4.3L Engine)

Below distributor

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Engine Controls Connector End Views in Engine Controls - 2.2L

Instrument Cluster

In the IP, ahead of the steering column

Instrument Panel, Gages, and Console Component Views

Instrument Panel, Gages, and Console Connector End Views

IP Fuse Block

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

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Multifunction Switch (T/SIG & HDLP D/SW & WSH & WSWA W/LVR)

LH side of the steering column

Tilt Wheel/Column Component Views in Steering Wheel and Column - Tilt

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Park Position Switch (w/ column Shift A/T)

In the Steering Column

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Powertrain Control Module (PCM) Connector C2 (2.2L Engine)

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

Rear Window Wiper Cutout and Liftglass Ajar Jamb Switch (Utility)

In the liftgate/endgate, near the latch

Wiper/Washer Component Views in Wiper/Washer Systems

Wiper/Washer Connector End Views in Wiper/Washer Systems

Supplemental Inflatable Restraint Sensing and Diagnostic Module (SDM)

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

SIR Component Views in SIR

SIR Connector End Views in SIR

Underhood Bussed Electrical Center (UBEC)

On the top of the left inner wheelwell

Power and Grounding Component Views in Wiring Systems

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Underhood Bussed Electrical Center (UBEC) Connector C1 (68 Cavities) (Body)

Below the UBEC

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

Underhood Bussed Electrical Center (UBEC) Connector C2 (68 Cavities) (Engine)

Below the UBEC

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 C2 Red (32 Cavities)

RH of the engine compartment

Engine Controls Component Views in Engine Controls - 4.3L

VCM Connector End Views in Engine Controls - 4.3L

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

VCM 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

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

C211 (48 Cavities)

Body harness to steering column harness, in front of the IP, near the steering column

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C411 (2 Cavities) (Utility w/ Endgate)

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

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C428 (8 Cavities) (Utility w/ Liftgate)

Body harness to liftgate harness, near the upper RH corner of the liftgate

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

G105 (2.2L Engine)

(CKT 450, CKT 451) Engine harness, to the RH rear of the engine block, near the Ignition Control Module

Harness Routing Views in Wiring Systems

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G105 (4.3L Engine)

(CKT 450, CKT 451) Engine harness, LH Rear 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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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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G450 (Utility)

(CKT 1350) Body harness, in the LH Rear body corner, near C403 to the tail lamp harness

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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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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P902 (Utility w/ Liftgate)

Body to RH liftgate harness, in the RH of the liftgate

Harness Routing Views in Wiring Systems

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S152 (2.2L Engine)

(CKT 351, CKT 413, CKT 451) Engine harness, between the breakouts for the fuel injector connector and the Ignition Control Module, 7 cm (2.6 in) from G105

Harness Routing Views in Wiring Systems

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S152 (4.3L Engine)

(CKT 351, CKT 413, CKT 451) Engine harness, between the breakouts for the LH rear and RH rear engine block grounds, 15 cm (5.9 in) from the breakout to the LH rear engine grounds

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 (3.1 in) from the breakout to the radio

Harness Routing Views in Wiring Systems

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S240 (Utility w/ Auto A/C)

(CKT 340) IP harness, 4 cm (1.6 in) from the breakout to the BCM module connector C3 and the breakout to the instrument cluster

Harness Routing Views in Wiring Systems

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S427 (Utility)

(CKT 1350, CKT 1450) LH rear body harness, 7 cm below the breakout to the left tail lamp connector C403

Harness Routing Views in Wiring Systems

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S900

(CKT 1303) RH liftgate harness, 5 cm (2.6 in) before breakout to rear window washer pump motor

Harness Routing Views in Wiring Systems

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Splice Pack SP201

Body harness, to the LH of the IP, below the IP fuse block, taped to the Body 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 LH center of the IP

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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