GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

A/C Compressor Clutch Coil

Part of the A/C compressor

HVAC Component Views

HVAC Connector End Views

A/C Compressor Clutch Diode

In the engine harness breakout, 8 cm (3.1 in) from the breakout to the A/C compressor high pressure switch

HVAC Component Views

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A/C Compressor Relay

In the underhood fuse block

Power and Grounding Component Views in Wiring Systems

Electrical Center Identification Views in Wiring Systems

A/C Compressor High Pressure Cutoff Switch

Rear of the A/C compressor

HVAC Component Views

HVAC Connector End Views

A/C Compressor Cycling Switch

At the A/C accumulator

HVAC Component Views

HVAC Connector End Views

Ambient Air Temperature Sensor (HVAC)

Right side of the radiator baffle, behind the grille

HVAC Component Views

HVAC Connector End Views

Blower Motor

LR of the engine compartment

HVAC Component Views

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Blower Motor Connector  C1 (2 Cavities)

On the blower motor

HVAC Component Views

HVAC Connector End Views

Blower Motor Connector  C2 (1 Cavity)

On the blower motor

HVAC Component Views

HVAC Connector End Views

Blower Motor Control Module

On the evaporator case, to the left of the accumulator

HVAC Component Views

HVAC Connector End Views

Data Link Connector (DLC)

Lower right of the IP

Data Link Communications Component Views in Data Link Communications

Data Link Communications Connector End Views in Data Link Communications

Electric Actuator (Temperature)

Left top of the heater/vent module, behind the IP

HVAC Component Views

HVAC Connector End Views

Electronic Climate Control (ECC) Module

The center of the IP, below the radio

HVAC Component Views

HVAC Connector End Views

HVAC Vacuum Control Solenoid Valve

On the lower rear of the heater assembly, near the body control module

HVAC Component Views

HVAC Connector End Views

Interior Air Temperature Sensor

In the roof area over the driver's side door

HVAC Component Views

HVAC Connector End Views

IP Fuse Block

Right of the IP, near the side door jamb switch

Power and Grounding Component Views in Wiring Systems

Electrical Center Identification Views in Wiring Systems

Lower Discharge Air Temperature Sensor

Left side of the floor air outlet assembly, under the IP, near the BCM

HVAC Component Views

HVAC Connector End Views

Sun Load Sensor

Top front center of the IP

HVAC Component Views

HVAC Connector End Views

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

Upper Discharge Air Temperature Sensor

Center of the IP, above the radio in the air distribution duct, center outlet

HVAC Component Views

HVAC Connector End Views

Vehicle Control Module (VCM)

Left side of the engine compartment

Engine Controls Component Views in Engine Controls - 4.3L

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Vehicle Control Module (VCM) Connector C3 (Clear) (32 Cavities)

Left side of the engine compartment

Engine Controls Component Views in Engine Controls - 4.3L

VCM Connector End Views in Engine Controls - 4.3L

C101 (8 Cavities)

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

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C106 (8 Cavities)

Forward lamps to body harness, inside the right front fender, near the underhood fuse block

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

C209 (16 Cavities)

Body harness to dome harness, LH front of IP

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

G102

(CKT 350) At the engine harness, to the RR of the cylinder head

Harness Routing Views in Wiring Systems

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G103

(CKT 351) At the engine harness, to the RR of the cylinder head

Harness Routing Views in Wiring Systems

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G105

(CKT 451) At the engine harness, to the LR of the cylinder head

Harness Routing Views in Wiring Systems

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G117

(CKT 850) At the body harness, to the RR of the engine compartment, near the cruise control module

Harness Routing Views in Wiring Systems

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G202

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

Harness Routing Views in Wiring Systems

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G203

(CKT 1050) At the body harness, to the right of the IP

Harness Routing Views in Wiring Systems

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G204

(CKT 1050) At the body harness, to the right of the IP

Harness Routing Views in Wiring Systems

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P100

At the IP bulkhead pass-through to the RR of the engine compartment, on the cowl

Harness Routing Views in Wiring Systems

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S103

(CKT 350) In the engine harness breakout to the A/C compressor clutch connector and A/C compressor cutoff switch connector, 7.5 cm (2.9 in) from the breakout

Harness Routing Views in Wiring Systems

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S104

(CKT 59) In the engine harness breakout to the A/C compressor clutch connector and A/C compressor cutoff switch connector, 7.5 cm (2.9 in) from the breakout

Harness Routing Views in Wiring Systems

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S106

(CKT 351) In the engine harness, between the breakouts to the VCM connectors and the engine coolant temperature sensor connector, 27 cm (10.6 in) from the breakout to the VCM connectors

Harness Routing Views in Wiring Systems

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S118

(CKT 850) In the body harness, 13 cm (5.1 in) to the right of the breakout for the radio antenna

Harness Routing Views in Wiring Systems

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S127

(CKT 552) In the body harness, 6.5 cm (2.6 in) from the EBCM C1 breakout toward the underhood fuse block C5 and C6 connectors

Harness Routing Views in Wiring Systems

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S152

(CKT 351, CKT 451) In the engine harness, between the breakouts for the LR and the RR engine block grounds, 15 cm (5.9 in) from the breakout to the RR engine grounds

Harness Routing Views in Wiring Systems

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S201

(CKT 1807) Body harness 13 cm (5.1 in) from the BCM connector breakout toward the C211 steering column harness connector

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, G205 ground breakout and the ground terminals

Harness Routing Views in Wiring Systems

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S213

(CKT 341) In the body harness, 42 cm (16.5 in) from the electric actuator connector, toward C203

Harness Routing Views in Wiring Systems

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S287

(CKT 340) In the IP harness, between the breakouts for the BCM C3 and the radio connector, 9 cm (3.6 in) from the radio connector breakout

Harness Routing Views in Wiring Systems

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S302

(CKT 1850) In the dome harness, 11 cm (4.3 in) from the LH visor vanity mirror lamp connector toward C229

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

Harness Routing Views in Wiring Systems

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Splice Pack SP288

(CKT 552) IP harness, between the breakouts for the radio connector and the LH console courtesy lamp, 17 cm (6.7 in) from the breakout for the radio connector

Harness Routing Views in Wiring Systems

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