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

A/C Compressor Clutch


Object Number: 280759  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

A

DK GRN

59

A/C Compressor Clutch Supply voltage

B

BLK

150

Ground

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

65

High (Position 4) Blower Motor Control Circuit

B

PPL

52

Blower Motor Supply Voltage

Blower Resistor Assembly


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 (Position 2) Blower Motor Control Circuit

B

LT BLU

72

Medium 2 (Position 3) Blower Motor Control Circuit

C

ORN

52

High (Position 4) Blower Motor Control Circuit

D

BLK/WHT

60

Low (Position 1) Blower Motor Control Circuit

Heater A/C 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

Fused Output, Battery

B

BRN

41

Fused Output - Ignition 3

C

--

--

Not Used

D

PPL

293

Rear Defogger Feed

E

GRY

8

Instrument Panel Lamp Feed

F

BRN

64

High Speed Blower Relay Feed - Coil

G

LT GRN

66

Air Conditioning Switch Output

H

BLK

150

Ground

Heater A/C 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

60

Blower Switch Output - Low

B

ORN

63

Blower Switch Output - Medium 1

C

TAN

72

Blower Switch Output - Medium 2

D

LT BLU

52

Blower Switch Output - High

E

BLK

150

Ground

Heater A/C 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

HIgh Speed Blower Feed-Coil

B

BRN

41

Accessory and ON Controlled fuse

C

BRN

64

Air Conditioning Switch Output

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

Sensor Return

B

GRY

596

Reference Voltage Feed - 5 Volt Reference

C

RED/BLK

380

Air Conditioning Refrigerant Pressure Sensor Signal