GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

Blower Motor (w/ Manual A/C)

At the right rear of the engine compartment

HVAC Component Views in HVAC Systems with A/C - Manual

HVAC Connector End Views in HVAC Systems with A/C - Manual

Blower Motor Relay

At the center rear of the engine compartment, on the front plenum

HVAC Component Views in HVAC Systems with A/C - Manual

HVAC Connector End Views in HVAC Systems with A/C - Manual

Blower Motor Resistor

At the left rear of the engine compartment, on the blower box

HVAC Component Views in HVAC Systems with A/C - Manual

HVAC Connector End Views in HVAC Systems with A/C - Manual

Heater Controller (w/o A/C) Connector C1 (10 Cavities)

At the upper center of the IP

HVAC Component Views in HVAC Systems w/A/C -Manual

HVAC Connector End Views in HVAC Systems w/A/C -Manual

Heater Controller (w/o A/C) Connector C2 (5 Cavities)

At the upper center of the IP, next to the vacuum harness connector

HVAC Component Views in HVAC Systems w/A/C -Manual

HVAC Connector End Views in HVAC Systems w/A/C -Manual

IP Fuse Block

To the left of the IP, near the left front door jamb switch

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

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) (4-door Utility Body harness)

In the UBEC

Power and Grounding Component Views in Wiring Systems

Power and Grounding Connector End Views in Wiring Systems

C203 (116 Cavities)

At the 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

G117

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

Harness Routing Views in Wiring Systems

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P100

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

Harness Routing Views in Wiring Systems

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S118

(CKT 850) At the body harness, between the breakouts to the blower motor and the blower motor relay

Harness Routing Views in Wiring Systems

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S215

(CKT 64) At the IP harness, in the breakout to the heater controller connectors, 10 cm (3.93 in) into the breakout

Harness Routing Views in Wiring Systems

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