GM Service Manual Online
For 1990-2009 cars only
Table 1: A/C Compressor Clutch
Table 2: A/C Refrigerant Pressure Sensor
Table 3: Blower Motor
Table 4: Blower Motor Resistor
Table 5: HVAC Control Assembly C1
Table 6: HVAC Control Assembly C2
Table 7: HVAC Control Assembly C3

A/C Compressor Clutch


Object Number: 280759  Size: CH

Connector Part Information

    • 12162017
    • 2-Way F Metri-Pack 150 Series (MD GRY)

Pin

Wire Color

Circuit No.

Function

A

DK GRN

59

A/C Compressor Clutch Supply Voltage

B

BLK

150

Ground

A/C Refrigerant Pressure Sensor


Object Number: 258299  Size: CH

Connector Part Information

    • 12110192
    • 3-Way F Metri-Pack 150 Series (BLK) Pull-to-Seat Sealed

Pin

Wire Color

Circuit No.

Function

A

BLK

552 (LD9)

2751 ( L61/LN2)

Low Reference

B

GRY

596 (LD9)

2700 (L61/LN2)

5 Volt Reference

C

RED/BLK

380

A/C Refrigerant Pressure Sensor Signal

Blower Motor


Object Number: 287953  Size: CH

Connector Part Information

    • 12064829
    • 2-Way F Metri-Pack 480 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

ORN

52

High Blower Motor Control

B

PPL

65

Blower Motor Supply Voltage

Blower Motor Resistor


Object Number: 295463  Size: CH

Connector Part Information

    • 12129366
    • 4-Way F Metri-Pack 480 Series (GRY)

Pin

Wire Color

Circuit No.

Function

A

TAN

63

Medium 1 Blower Motor Control

B

LT BLU

72

Medium 2 Blower Motor Control

C

ORN

52

High Blower Motor Control

D

BLK/WHT

51

Ground

HVAC Control Assembly C1


Object Number: 38596  Size: CH

Connector Part Information

    • 12020557
    • 3-Way F Metri-Pack 480 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

LT GRN

66

A/C Request Signal

LT GRN

66

A/C Request Signal

B

BRN

41

Ignition 3 Voltage

BRN

41

Ignition 3 Voltage

C

BRN/WHT

64

Blower Motor Relay Supply Voltage

BRN/WHT

64

Blower Motor Relay Supply Voltage

HVAC Control Assembly C2


Object Number: 232132  Size: CH

Connector Part Information

    • 12020813
    • 5-Way F Metri-Pack 630 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK/WHT

51

Low Blower Motor Control

B

ORN

63

High Blower Motor Control

ORN

63

High Blower Motor Control

C

TAN

63

Medium 1 Blower Motor Control

D

LT BLU

72

Medium 2 Blower Motor Control

E

BLK

150

Ground

BLK

150

Ground

HVAC Control Assembly C3


Object Number: 62469  Size: CH

Connector Part Information

    • 12064998
    • 8-Way F Metri-Pack 280 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

ORN

1340

Battery Positive Voltage

B

BRN

41

Ignition 3 Voltage

C

--

--

Not Used

D

PPL

293

Rear Defog Element Supply Voltage

E

GRY

8

Instrument Panel Lamp Supply Voltage

F

BRN/WHT

64

Blower Motor Relay Supply Voltage

G

LT GRN

66

A/C Request Signal

H

BLK

150

Ground