GM Service Manual Online
For 1990-2009 cars only
Table 1: A/C Compressor Clutch
Table 2: A/C Refrigerant Pressure Sensor
Table 3: Air Temperature Actuator - Left
Table 4: Air Temperature Actuator - Right - CJ3
Table 5: Blower Motor
Table 6: Blower Motor Resistor Assembly
Table 7: Evaporator Temperature Sensor
Table 8: HVAC Control Module - C1
Table 9: HVAC Control Module - C2
Table 10: Mode Actuator
Table 11: Recirculation Actuator

A/C Compressor Clutch


Object Number: 537107  Size: CH

Connector Part Information

    • 15326801
    • 2-Way F GT 150 Series (L-GY)

Pin

Wire Color

Circuit No.

Function

A

D-GN

59

A/C Compressor Clutch Supply Voltage

B

BK

1050

Ground

A/C Refrigerant Pressure Sensor


Object Number: 258299  Size: CH

Connector Part Information

    • 12110192
    • 3-Way F Metri-Pack 150 Series (BK)

Pin

Wire Color

Circuit No.

Function

A

BK

2751

Low Reference

B

GY

2700

5-Volt Reference

C

RD/BK

380

A/C Refrigerant Pressure Sensor Signal

Air Temperature Actuator - Left


Object Number: 40427  Size: CH

Connector Part Information

    • 12064978
    • 6-Way F Micro-Pack 100 Series (GY)

Pin

Wire Color

Circuit No.

Function

1-2

--

--

Not Used

3

BK

150

Ground

4

D-BU

1199

Left Air Temperature Door Control

5

--

--

Not Used

6

BN

241

Ignition 3 Voltage

Air Temperature Actuator - Right - CJ3


Object Number: 280764  Size: CH

Connector Part Information

    • 12064993
    • 6-Way F Micro-Pack 100 Series (BK)

Pin

Wire Color

Circuit No.

Function

5-6

--

--

Not Used

7

BK

150

Ground

8

WH/BK

1236

Right Air Temperature Door Control

9

--

--

Not Used

10

BN

241

Ignition 3 Voltage

Blower Motor


Object Number: 62488  Size: CH

Connector Part Information

    • 12084957
    • 2-Way F Metri-Pack 280 Series (BK)

Pin

Wire Color

Circuit No.

Function

A

RD

--

Blower Motor Supply Voltage

B

BK

--

Ground

Blower Motor Resistor Assembly


Object Number: 73146  Size: CH

Connector Part Information

    • 12052854
    • 7-Way F Metri-Pack 280 Series (BK)

Pin

Wire Color

Circuit No.

Function

A

TN

63

Medium 1 Blower Motor Control

B

YE

60

Low Blower Motor Control

C

PU

73

Medium 3 Blower Motor Control

D

L-BU

72

Medium 2 Blower Motor Control

E

BK

150

Ground

F

OG

52

High Blower Motor Control

G

RD

442

Battery Positive Voltage

Evaporator Temperature Sensor


Object Number: 280768  Size: CH

Connector Part Information

    • 12052832
    • 2-Way F Metri-Pack 150 Series (BK)

Pin

Wire Color

Circuit No.

Function

A

WH

2622

Evaporator Temperature Sensor Signal

B

BK

552

Low Reference

HVAC Control Module - C1


Object Number: 744295  Size: CH

Connector Part Information

    • 12084994
    • 16-Way F Micro-Pack 100 Series (BK)

Pin

Wire Color

Circuit No.

Function

A1

OG

640

Battery Positive Voltage

A2

BN

241

Ignition 3 Voltage

A3

BN

9

Park Lamp Supply Voltage

A4

WH

193

Rear Defog Relay Control

A5

TN/BK

2274

Recirculation Door Control

A6

D-GN/WH

762

A/C Request Signal

A7

TN

2273

Mode Door Control

A8

D-BU

1199

Left Air Temperature Door Control

B1

BK

150

Ground

B2

BK

552

Low Reference

B3

WH

2622

Evaporator Temperature Sensor Signal

B4

GY

8

Instrument Panel Lamp Supply Voltage

B5

D-GN

71

Off Blower Motor Control

B6

WH/BK

1236

Right Air Temperature Door Control

B7-B8

--

--

Not Used

HVAC Control Module - C2


Object Number: 62469  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

A

D-GN

71

OFF Blower Motor Control

B

BN

41

Ignition 3 Voltage

C

OG

52

High Blower Motor Control

D

--

--

Not Used

E

PU

73

Medium 3 Blower Motor Control

F

L-BU

72

Medium 2 Blower Motor Control

G

TN

63

Medium 1 Blower Motor Control

H

YE

60

Low Blower Motor Control

Mode Actuator


Object Number: 280764  Size: CH

Connector Part Information

    • 12064993
    • 6-Way F Micro-Pack 100 Series (BK)

Pin

Wire Color

Circuit No.

Function

5-6

--

--

Not Used

7

BK

150

Ground

8

TN

2273

Mode Door Control

9

--

--

Not Used

10

BN

241

Ignition 3 Voltage

Recirculation Actuator


Object Number: 280764  Size: CH

Connector Part Information

    • 12064993
    • 6-Way F Micro-Pack 100 Series (BK)

Pin

Wire Color

Circuit No.

Function

5

BN

241

Ignition 3 Voltage

6

TN/BK

2274

Recirculation Door Control

7

BK

150

Ground

8-10

--

--

Not Used