GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

A/C Blower Motor Rear

In the left rear of the vehicle next to D pillar

HVAC Component Views

HVAC Connector End Views

A/C Clutch Diode (D101)

In the underhood fuse block

Harness Routing Views in Wiring Systems

Electrical Center Identification Views in Wiring Systems

A/C Compressor Clutch

At the front of the A/C compressor

Harness Routing Views in Wiring Systems

HVAC Connector End Views

A/C Enable Relay

In the underhood fuse block

Harness Routing Views in Wiring Systems

Electrical Center Identification Views in Wiring Systems

A/C High Pressure Cut-Off Switch

In the rear of the A/C compressor

Harness Routing Views in Wiring Systems

HVAC Connector End Views

A/C Low Pressure Cut-Off Switch

At the top of the A/C receiver dryer

HVAC Component Views

HVAC Connector End Views

A/C Resistor Pack Rear

Above the rear blower motor, in the blower motor duct

HVAC Component Views

HVAC Connector End Views

A/C Switch Rear

In the center of the dash to the right side of the radio

HVAC Component Views

HVAC Connector End Views

Blower Motor Front

Behind the coolant recovery reservoir by the right front fender

HVAC Component Views

HVAC Connector End Views

Blower Motor Resistor and Relay Pack

Mounted between the evaporator and the front blower motor on the right front of the dash housing

Lighting Systems Component Views in Lighting Systems

HVAC Connector End Views

Convenience Center

On the left of the IP fuse block by the left kick panel

Harness Routing Views in Wiring Systems

Electrical Center Identification Views in Wiring Systems

Heater and A/C Control Module

In the center of the dash

HVAC Component Views

HVAC Connector End Views

Heater Blower Motor Rear

In the left side of the vehicle behind the "B" pillar

HVAC Component Views

HVAC Connector End Views

Heater Control Module (without A/C)

In the center of the dash

HVAC Component Views

HVAC Connector End Views

Heater Resistor Pack Rear

On top of the rear heater core assembly

HVAC Component Views

HVAC Connector End Views

Heater Switch Rear

In the center of the dash to the right side of the radio

HVAC Component Views

HVAC Connector End Views

Instrument Panel (IP) Fuse Block

On the lower left side of the dash, next to the left side kick panel

Harness Routing Views in Wiring Systems

Electrical Center Identification Views in Wiring Systems

Temperature Control Actuator Motor

On the lower right side of the dash to the left side of the main air duct

HVAC Component Views

HVAC Connector End Views

Underhood Fuse Block (A4WD)

On the left side of the dash, near the battery

Harness Routing Views in Wiring Systems

Electrical Center Identification Views in Wiring Systems

Underhood Fuse Block (RWD)

On the left side of the dash, near the battery

Harness Routing Views in Wiring Systems

Electrical Center Identification Views in Wiring Systems

Vehicle Control Module (VCM)

On the left side of the engine compartment on the lower side of the battery

Engine Controls Component Views in Engine Controls

VCM Connector End Views in Engine Controls

Water Bypass Valve Solenoid

In the lower left side of the evaporative housing behind the receiver drier

HVAC Component Views

HVAC Connector End Views

C100

In the left side front of the dash

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C102

In the left of the bulkhead, LH side front of dash.

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C104

In the engine harness 15 cm (5.9 in) from fuse block the relay breakout toward C100.

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C109

In the left of the bulkhead, LH side front of dash, next to C102

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C212

In the heater jumper harness 10 cm (3.9 in ) from the jumper harness breakout near C219

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C213

In the A/C jumper harness 10 cm (3.9 in) from the jumper harness breakout near C218

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C218

In the convenience center

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

C219

In the convenience center

Harness Routing Views in Wiring Systems

Inline Harness Connector End Views in Wiring Systems

G100

In the right front of the radiator support next to the engine coolant reservoir

Harness Routing Views in Wiring Systems

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G104

In the center of the dash 31 cm (12.2 in) from the A/C low pressure cut-off switch breakout

Harness Routing Views in Wiring Systems

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G200

In the right front of the A pillar above the right front door jamb switch

Harness Routing Views in Wiring Systems

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G301

Above the rear heater toward the rear of the vehicle

Power and Grounding Component Views in Wiring Systems

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G404

Below the rear A/C blower toward the front of the vehicle

Power and Grounding Component Views in Wiring Systems

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P100

In the left side front of the dash, on the left of the bulkhead

Harness Routing Views in Wiring Systems

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S100

In the forward lamp harness 8 cm (3.1 in) from the right headlamp breakout toward the left side of the vehicle

Harness Routing Views in Wiring Systems

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S111

In the engine harness 17 cm (6.7 in) from the underhood fuse block breakout

Harness Routing Views in Wiring Systems

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S124

In the engine harness 11.3 cm (4.4 in) from the oil pressure switch breakout

Harness Routing Views in Wiring Systems

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S224

In the IP harness 17 cm (6.7 in) from the body control module (BCM) connectors breakout

Harness Routing Views in Wiring Systems

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S229

In the I/P harness 4 cm (1.6 in) from the temperature control motor breakout toward the right side of the dash

Harness Routing Views in Wiring Systems

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S238

In the IP harness 16 cm (6.3 in) from connector C100

Harness Routing Views in Wiring Systems

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