GM Service Manual Online
For 1990-2009 cars only
Table 1: A/C Compressor Clutch
Table 2: A/C Orifice Solenoid
Table 3: A/C Refrigerant Pressure Sensor
Table 4: Air Temperature Actuator - Left
Table 5: Air Temperature Actuator - Right
Table 6: Air Temperature Sensor - Inside
Table 7: Air Temperature Sensor - Lower Right
Table 8: Air Temperature Sensor - Lower Left
Table 9: Air Temperature Sensor - Ambient
Table 10: Air Temperature Sensor - Upper Left
Table 11: Air Temperature Sensor - Upper Right
Table 12: Blower Motor Control Processor
Table 13: Blower Motor
Table 14: HVAC Control Module W/CJ2
Table 15: Instrument Panel Integration Module (IPM) C1
Table 16: Instrument Panel Integration Module (IPM) C2
Table 17: Mode Actuator
Table 18: Recirculation Actuator
Table 19: Sunload Sensor Assembly

A/C Compressor Clutch


Object Number: 35437  Size: CH

Connector Part Information

    • 12186685
    • 2-Way (BLK)

Pin

Wire Color

Circuit No.

Function

A

DK GRN

59

A/C Compressor Clutch Supply Voltage

B

BLK

1150

Ground

A/C Orifice Solenoid


Object Number: 681875  Size: CH

Connector Part Information

    • 15324570
    • 2-Way M GT 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

PNK/BLK

2262

A/C Orifice Solenoid Supply Voltage

B

BLK

250

Ground

A/C Refrigerant Pressure Sensor


Object Number: 219804  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

A

BLK

808

Low Reference

B

GRY

474

5-Volt Reference

C

RED/BLK

380

A/C Refrigerant Pressure Sensor Signal

Air Temperature Actuator - Left


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

141

Ignition 3 Voltage

6

DK BLU

1199

Left Air Temperature Door Control

7

YEL

1791

Low Reference

8

--

--

Not Used

9

LT BLU

733

Air Temperature Door Position Signal - Left

10

GRY

705

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

141

Ignition 3 Voltage

6

WHT/BLK

1236

Air Temperature Door Control - Right

7

YEL

1791

Low Reference

8

--

--

Not Used

9

DK BLU

1646

Air Temperature Door Position Signal - Right

10

GRY

705

5-Volt Reference

Air Temperature Sensor - Inside


Object Number: 35455  Size: CH

Connector Part Information

    • 15304747
    • 2-Way M Metri-Pack 150 Series (RED)

Pin

Wire Color

Circuit No.

Function

A

DK GRN

734

Inside Air Temperature Sensor Signal

B

YEL

61

Low Reference

Air Temperature Sensor - Lower Right


Object Number: 82383  Size: CH

Connector Part Information

    • 12047662
    • 2-Way F Metri-Pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK

520

Lower Right Air Temperature Sensor Signal

B

YEL

61

Low Reference

Air Temperature Sensor - Lower Left


Object Number: 82383  Size: CH

Connector Part Information

    • 12047662
    • 2-Way F Metri-Pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK

518

Lower Left Air Temperature Sensor Signal

B

YEL

61

Low Reference

Air Temperature Sensor - Ambient


Object Number: 232831  Size: CH

Connector Part Information

    • 12162195
    • 2-Way M Metri-Pack 150.2 Series Pull to Seat (BLK)

Pin

Wire Color

Circuit No.

Function

A

LT GRN/BLK

735

Ambient Air Temperature Sensor Signal

B

YEL

61

Low Reference

Air Temperature Sensor - Upper Left


Object Number: 82383  Size: CH

Connector Part Information

    • 12047662
    • 2-Way F Metri-Pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK

516

Upper Left Air Temperature Sensor Signal

B

YEL

61

Low Reference

Air Temperature Sensor - Upper Right


Object Number: 82383  Size: CH

Connector Part Information

    • 12047662
    • 2-Way F Metri-Pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

TAN

517

Upper Right Air Temperature Sensor Signal

B

YEL

61

Low Reference

Blower Motor Control Processor


Object Number: 73229  Size: CH

Connector Part Information

    • 12129566
    • 4-Way F Metri-Pack 280 Series (GRY)

Pin

Wire Color

Circuit No.

Function

A

BLK

450

Ground

B

ORN

1340

Battery Positive Voltage

C

GRY

754

Blower Motor Speed Control

D

--

--

Not Used

Blower Motor


Object Number: 608947  Size: CH

Connector Part Information

    • 12092311
    • 3-Way F Metri-Pack 480 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK

--

Blower Motor Control

B

PPL

--

Blower Motor Supply Voltage

C

BRN

--

Blower Motor Flange Ground

HVAC Control Module W/CJ2


Object Number: 702629  Size: CH

Connector Part Information

    • 15356937
    • 12-Way M (BLK) Dock N loc Series RW

Pin

Wire Color

Circuit No.

Function

A1

BLK/WHT

351

Ground

A2

BRN

41

Ignition 3 Voltage

A3-A4

--

--

Not Used

A5

BLK

350

Ground

A6

--

--

Not Used

B1

YEL

1491

Backlight Lamps Control

B2-B4

--

--

Not Used

B5

PPL

1881

HVAC Control Module Clock Signal

B6

LT BLU

1880

HVAC Control Module Data Signal

Instrument Panel Integration Module (IPM) C1


Object Number: 333019  Size: CH

Connector Part Information

    • 12110245
    • 32-Way Micro-Pack 100 Series

Pin

Wire Color

Circuit No.

Function

C1

ORN

1140

Battery Positive Voltage

C2

BRN

141

Ignition 3 Voltage

C3-C5

--

--

Not Used

C6

PNK/BLK

1597

Courtesy Lamps Switch On Signal

C7

PPL

1807

Class 2 Serial Data

C8

PPL

1807

Class 2 Serial Data

C9-C10

--

--

Not Used

C11

LT BLU

1788

Traction Control Switch Signal

C12

LT BLU

1880

HVAC Control Module Data Signal

C13

PPL

1881

HVAC Control Module Clock Signal

C14-C16

--

--

Not Used

D1-D2

--

--

Not Used

D3

BLK

520

Lower Right Air Temperature Sensor Signal

D4-D6

--

--

Not Used

D7

LT GRN

80

Key in Ignition Switch Signal

D8

PPL

1783

Twilight Sentinal Delay Signal

D9-D10

--

--

Not Used

D11

GRY/BLK

754

Blower Motor Speed Control

D12-D15

--

--

Not Used

D16

BLK/WHT

451

Ground

Instrument Panel Integration Module (IPM) C2


Object Number: 130689  Size: CH

Connector Part Information

    • 12110244
    • 24-Way Micro-Pack 100 Series

Pin

Wire Color

Circuit No.

Function

A1

GRY

705

5-Volt Reference

A2

YEL/BLK

1814

Mode Door Position Signal

A3

--

--

Not Used

A4

PPL

1838

Recirculation Door Position Signal

A5

LT BLU

733

Left Air Temperature Door Position Signal

A6

DK BLU

1646

Right Air Temperature Door Position Signal

A7

YEL

1791

Low Reference

A8

YEL

1318

Mode Door Control

A9

--

--

Not Used

A10

DK GRN

1614

Recirculation Door Control

A11

DK BLU

1199

Left Air Temperature Door Control

A12

WHT/BLK

1236

Right Air Temperature Door Control

B1

LT GRN/BLK

735

Ambient Air Temperature Sensor Signal

B2

LT BLU/BLK

590

Driver Solar Sensor Signal

B3

GRY

1548

Passenger Solar Sensor Signal

B4

DK GRN

734

Inside Air Temperature Sensor Signal

B5

WHT

278

Ambient Light Sensor Signal

B6

BLK

516

Upper Left Air Temperature Sensor Signal

B7

TAN

517

Upper Right Air Temperature Sensor Signal

B8

YEL

61

Low Reference

B9

BLK

518

Lower Left Air Temperature Sensor Signal

B10

--

--

Not Used

B11

DK GRN

44

Instrument Panel Lamps Dimmer Switch Signal

B12

LT BLU/BLK

1688

5-Volt Reference

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

141

Ignition 3 Voltage

6

YEL

1318

Mode Door Control

7

YEL

1791

Low Reference

8

--

--

Not Used

9

YEL/BLK

1814

Mode Door Position Signal

10

GRY

705

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

141

Ignition 3 Voltage

6

DK GRN

1614

Recirculation Door Control

7

YEL

1791

Low Reference

8

--

--

Not Used

9

PPL

1838

Recirculation Door Position Signal

10

GRY

705

5-Volt Reference

Sunload Sensor Assembly


Object Number: 130637  Size: CH

Connector Part Information

    • 12064760
    • 4-Way F Metri-Pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

LT BLU/BLK

590

Driver Sunload Sensor Signal

B

GRY

1548

Passenger Sunload Sensor Signal

C

YEL

61

Low Reference

D

WHT

278

Ambient Light Sensor Signal