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
Table 5: Blower Motor
Table 6: Blower Motor Control Processor
Table 7: Evaporator Temperature Sensor
Table 8: HVAC Control Module
Table 9: Mode Actuator
Table 10: Recirculation Actuator
Table 11: Sunload Sensor

A/C Compressor Clutch


Object Number: 537107  Size: CH

Connector Part Information

    • 15326801
    • 2-Way F GT 150 Series (LT GRY)

Pin

Wire Color

Circuit No.

Function

A

DK GRN

59

A/C Compressor Clutch Supply Voltage

B

BLK

1050

Ground

A/C Refrigerant Pressure Sensor


Object Number: 258299  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

A

BLK

2751

Low Reference

B

GRY

2700

5-Volt Reference

C

RED/BLK

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 (GRY)

Pin

Wire Color

Circuit No.

Function

1

BRN

241

Ignition 3 Voltage

2

DK BLU

1199

Left Air Temperature Door Control

3

BLK

150

Ground

4

--

--

Not Used

5

LT BLU

733

Left Air Temperature Door Position Signal

6

GRY

598

5-Volt Reference

Air Temperature Actuator - Right


Object Number: 280764  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

5

BRN

241

Ignition 3 Voltage

6

WHT/BLK

1236

Right Air Temperature Door Control

7

BLK

150

Ground

8

--

--

Not Used

9

DK BLU

1646

Right Air Temperature Door Position Signal

10

GRY

598

5-Volt Reference

Blower Motor


Object Number: 62488  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

A

RED

--

Blower Motor Supply Voltage

B

BLK

--

Ground

Blower Motor Control Processor


Object Number: 821354  Size: CH

Connector Part Information

    • 12105056
    • 4-Way F (BLK)

Pin

Wire Color

Circuit No.

Function

1

RED

442

Battery Positive Voltage

2

ORN

761

Blower Motor Speed Signal

3

GRY/BLK

754

Blower Motor Speed Control

4

BLK

150

Ground

Evaporator Temperature Sensor


Object Number: 280768  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

A

WHT

2622

Evaporator Temperature Sensor Signal

B

BLK

552

Low Reference

HVAC Control Module


Object Number: 130690  Size: CH

Connector Part Information

    • 12110206
    • 24-Way F Micro-Pack 100 Series (LT BLU)

Pin

Wire Color

Circuit No.

Function

A1

BLK

552

Low Reference

A2

--

--

Not Used

A3

WHT

2622

Evaporator Temperature Sensor Signal

A4

LT BLU/BLK

590

Sunload Sensor Signal

A5-A6

--

--

Not Used

A7

GRY/BLK

754

Blower Motor Speed Control

A8

ORN

761

Blower Motor Speed Signal

A9

--

--

Not Used

A10

BLK

150

Ground

A11

BRN

241

Ignition 3 Voltage

A12

ORN

640

Battery Positive Voltage

B1

DK BLU

1646

Right Air Temperature Door Position Signal

B2

LT BLU

733

Left Air Temperature Door Position Signal

B3

YEL/BLK

713

Mode Door Position Signal

B4

GRY

598

5-Volt Reference

B5

WHT/BLK

1236

Right Air Temperature Door Control

B6

DK BLU

1199

Left Air Temperature Door Control

B7

TAN

2273

Mode Door Control

B8

TAN/BLK

2274

Recirculation Door Control

B9

WHT

1038

Class 2 Serial Data

B10

--

--

Not Used

B11

WHT

193

Rear Defog Relay Control

B12

GRY

8

Instrument Panel Lamp Supply Voltage

Mode Actuator


Object Number: 280764  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

5

BRN

241

Ignition 3 Voltage

6

TAN

2273

Mode Door Control

7

BLK

150

Ground

8

--

--

Not Used

9

YEL/BLK

713

Mode Door Position Signal

10

GRY

598

5-Volt Reference

Recirculation Actuator


Object Number: 280764  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

5

BRN

241

Ignition 3 Voltage

6

TAN/BLK

2274

Recirculation Door Control

7

BLK

150

Ground

8-10

--

--

Not Used

Sunload Sensor


Object Number: 821858  Size: CH

Connector Part Information

    • 15316639
    • 2-Way F (BLK)

Pin

Wire Color

Circuit No.

Function

1

LT BLU/BLK

590

Sunload Sensor Signal

2

BLK

552

Low Reference