GM Service Manual Online
For 1990-2009 cars only
Table 1: A/C Clutch
Table 2: A/C Low Side Temperature Sensor
Table 3: Air Inlet Actuator
Table 4: Ambient Air Temperature Sensor
Table 5: Blower Control Module
Table 6: Instrument Panel Integration Module (IPM) C1
Table 7: Instrument Panel Integration Module (IPM) C2
Table 8: Inside Air Temperature Sensor
Table 9: LH A/C Temperature Sensor
Table 10: LH Inside Air Temperature Sensor
Table 11: LH Sun Load Sensor
Table 12: Mode Actuator
Table 13: RH A/C Temperature Sensor
Table 14: RH Inside Air Temperature Sensor
Table 15: RH Sun Load Sensor
Table 16: Rear Blower Motor
Table 17: Rear Blower Resistor Module
Table 18: Rear Blower Switch
Table 19: Rear Mode Actuator

A/C Clutch


Object Number: 35437  Size: CH

Connector Part Information

    • 12186685
    • 2 Way (BLK)

Pin

Wire Color

Circuit No.

Function

A

DK GRN

59

Air Conditioning Compressor Clutch Solenoid Feed

B

BLK

1550

Ground

A/C Low Side Temperature Sensor


Object Number: 130692  Size: CH

Connector Part Information

    • 12092512
    • 2 Way (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK

470

Sensor Return

B

GRY

731

A/C Refrigerant Low Temperature Sensor Signal

Air Inlet 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 Positive Voltage

6

DK GRN

1614

Air Inlet Valve Motor Feed

7

YEL

1791

Air Temperature Valve Motor Return

8

--

--

Not Used

9

PPL

1838

Air Inlet Valve Position Sensor Signal

10

GRY

705

5 Volt Reference

Ambient Air Temperature Sensor


Object Number: 130680  Size: CH

Connector Part Information

    • 12162195
    • 2 Way Metri-Pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

LT GRN/BLK

735

Ambient Air Temperature Sensor Signal

B

YEL

61

Ambient Air Temperature Sensor Return

Blower Control Module


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 (LH Drive)

A

BLK

350

Ground (RH Drive)

B

ORN

1340

Ignition Positive Voltage

C

GRY/BLK

754

Blower Speed Signal-Speed Control

D

--

--

Not Used

Driver Air Mix 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 Positive Voltage (B+)

6

DK BLU

1199

Air Temperature Valve Motor Feed

7

YEL

1791

Air Temperature Valve Motor Return

8

--

--

Not Used

9

LT BLU

733

Air Temperature Valve Position Sensor Signal

10

GRY

705

Reference Voltage Feed - 5 Volt Reference

Instrument Panel Integration Module (IPM) C1


Object Number: 73157  Size: CH

Connector Part Information

    • 12110207
    • 32 Way F Micro-Pack 100 Series (LT BLU)

Pin

Wire Color

Circuit No.

Function

C1

ORN

440

Battery Positive Voltage (B+)

C2

BRN

41

Ignition Positive Voltage

C3-C4

--

--

Not Used

C5

GRY/BLK

1598

Interior Lamp Switch Input - Off

C6

PNK/BLK

1597

Interior Lamp Switch Input - On

C7

PPL

1807

Class 2 Serial Data Line

C8

PPL

1807

Class 2 Serial Data Line

C9

ORN

192

Front Foglamp Switch Input

C10

LT BLU

187

Rear Foglamp Switch Input (Export)

C11

LT BLU

1788

Traction Control Switch Input

C12-C16

--

--

Not Used

D1-D2

--

--

Not Used

D3

BLK

520

RH Heater Temperature Sensor Input

D4

--

--

Not Used

D5

BLK

1576

Rear Release Switch Input

D6

PNK/WHT

1447

Fuel Door Release Switch Input

D7

LT GRN

80

Key In Ignition Input

D8

PPL

1783

Twilight Delay Input

D9- D10

--

--

Not Used

D11

GRY/BLK

754

PWM Blower Speed Control

D12

--

--

Not Used

D13

LT BLU/WHT

1595

Ignition Key Cylinder Lamp Control

D14

YEL/BLK

1491

Panel Dimming Input

D15

YEL

1369

LCD Display 55 Volt Feed

D16

BLK/WHT

451

Ground

Instrument Panel Integration Module (IPM) C2


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

GRY

705

5 Volt Reference

A2

YEL/BLK

1814

Mode Actuator Position Sensor Input

A3

--

--

Not Used

A4

PPL

1838

Air Inlet Actuator Position Sensor Input

A5

LT BLU

733

Driver Air Mix Actuator Position Sensor Input - Door 1

A6

DK BLU

1646

Passenger Air Mix Actuator Position Sensor Input - Door 2

A7

YEL

1791

Actuator Return

A8

YEL

1318

Mode Actuator Feed

A9

--

--

Not Used

A10

DK GRN

1614

Air Inlet Actuator Feed

A11

DK BLU

1199

Driver Air Mix Actuator Feed

A12

WHT/BLK

1236

Passenger Air Mix Actuator Feed

B1

LT GRN/BLK

735

Ambient Air Temperature Sensor Input

B2

LT BLU/BLK

590

LH Sun Load Temperature Sensor Input

B3

GRY

1548

RH Sun Load Temperature Sensor Input

B4

DK GRN

734

Inside Air Temperature Sensor Input

B5

WHT

278

Ambient Light Sensor Input

B6

BLK

516

LH A/C Temperature Sensor Input

B7

TAN

517

RH A/C Temperature Sensor Input

B8

YEL

61

Sensor Return

B9

BLK/WHT

518

LH Heater Temperature Sensor Input

B10

--

--

Not Used

B11

DK GRN

44

IP Dimmer Switch Input

B12

LT BLU/BLK

1688

5 Volt Reference

Inside Air Temperature Sensor


Object Number: 130637  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

A

DK GRN

734

Inside Air Temperature Sensor Signal

B

BRN

141

Ignition Positive Voltage

C

BLK

450

Ground

D

YEL

61

Inside Air Temperature Sensor Return

LH A/C Temperature Sensor


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

LH A/C Temperature Sensor Signal

B

YEL

61

LH A/C Temperature Sensor Return

LH Inside Air Temperature Sensor


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

LH Inside Air Temperature Sensor Signal

B

YEL/BLK

61

LH Inside Air Temperature Sensor Return

LH Sun Load Sensor


Object Number: 258301  Size: CH

Connector Part Information

    • 12124666
    • 2 Way (GRN)

Pin

Wire Color

Circuit No.

Function

A

LT BLU/BLK

590

LH Sun Load Sensor Signal

B

YEL

61

LH Sun Load Sensor Return

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 Positive Voltage

6

YEL

1318

Mode Valve Motor Feed-Lower

7

YEL

1791

Air Temperature Valve Motor Return

8

--

--

Not Used

9

YEL/BLK

1814

Mode Valve Position Sensor Signal - Lower

10

GRY

705

5 Volt Reference

Passenger Air Mix 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 Positive Voltage (B+)

6

WHT/BLK

1236

Air Temperature Valve Motor Feed - Passenger

7

YEL

1791

Air Temperature Valve Motor Return

8

--

--

Not Used

9

DK BLU

1646

Air Temperature Valve Position Sensor Signal - Passenger

10

GRY

705

Reference Voltage Feed - 5 Volt Reference

RH A/C Temperature Sensor


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

RH A/C Temperature Sensor Signal

B

YEL

61

RH A/C Temperature Sensor Return

RH Inside Air Temperature Sensor


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/WHT

520

RH Inside Air Temperature Sensor SIgnal

B

YEL/BLK

61

RH Inside Air Temperature Sensor Return

RH Sun Load Sensor


Object Number: 258301  Size: CH

Connector Part Information

    • 12124666
    • 2 Way (GRN)

Pin

Wire Color

Circuit No.

Function

A

GRY

1548

RH Sun Load Sensor Signal

B

YEL

61

RH Sun Load Sensor Return

Rear Blower Motor


Object Number: 130724  Size: CH

Connector Part Information

    • 12064869
    • 2 Way Metri-Pack 150 Series (BLU)

Pin

Wire Color

Circuit No.

Function

A

YEL

1172

Auxiliary Blower Motor Feed

B

ORN

1052

Auxiliary Blower Motor Output

Rear Blower Resistor Module


Object Number: 68759  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

A

LT BLU

72

Blower Switch Output-Medium 2

B

PPL

73

Blower Switch Output-Medium 3

C

ORN

1052

Auxiliary Blower Output

D

WHT

63

Blower Switch Output-Medium 1

Rear Blower Switch


Object Number: 62464  Size: CH

Connector Part Information

    • 12064769
    • 10 Way F Metri-Pack 150 Series (NAT)

Pin

Wire Color

Circuit No.

Function

A

BLK

350

Ground

B

BRN

141

Ignition Positive Voltage

C

--

--

Not Used

D

YEL

1491

Dash Integration Module Output- Backlighting Lamps (LH Drive)

D

YEL/BLK

1491

Dash Integration Module Output- Backlighting Lamps (RH Drive)

E

BLK

350

Ground

F

TAN

63

Blower Switch Output-Medium 1

G

LT BLU

72

Blower Switch Output-Medium 2

H

PPL

73

Blower Switch Output-Medium 3

J

ORN

1052

Auxiliary Blower Motor Circuit

K

PNK

1593

Diverter Motor Feed

Rear Mode Actuator


Object Number: 280764  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

5-6

--

--

Not Used

7

BLK

350

Ground

8

PNK

1593

Diverter Motor Feed

9

--

--

Not Used

10

BRN

141

Ignition Positive Voltage