GM Service Manual Online
For 1990-2009 cars only
Table 1: A/C Compressor Clutch
Table 2: A/C High Pressure Switch
Table 3: A/C Low Pressure Switch (ALL)
Table 4: A/C High Pressure Recirculation Switch
Table 5: Air Temperature Actuator
Table 6: Air Temperature Sensor Assembly - Inside - Over Head
Table 7: Air Temperature Sensor - Lower
Table 8: Air Temperature Sensor - Ambient
Table 9: Air Temperature Sensor - Upper
Table 10: Blower Motor
Table 11: Blower Motor Control Processor
Table 12: Blower Motor Resistor Assembly
Table 13: HVAC Control Module
Table 14: Mode Actuator
Table 15: Recirculation Actuator
Table 16: Sunload Sensor

A/C Compressor Clutch


Object Number: 280759  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

A

BLK

550

Ground

B

DK GRN

59

A/C Compressor Clutch Supply Voltage

A/C High Pressure Switch


Object Number: 366093  Size: CH

Connector Part Information

    • 15317968
    • 2-Way F Micro-Pack 100 W Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

LT BLU

203

A/C Request Signal

B

DK GRN/

WHT

762

A/C Request Signal

A/C Low Pressure Switch (ALL)


Object Number: 35437  Size: CH

Connector Part Information

    • 12052644
    • 2-Way F Metri-Pack 150 Series (LT GRY)

Pin

Wire Color

Circuit No.

Function

A

DK GRN

603

A/C Low Pressure Switch Signal

B

BLK

550

Ground

A/C High Pressure Recirculation Switch


Object Number: 35437  Size: CH

Connector Part Information

    • 12124037
    • 2-Way F Metri-Pack 150 (BLK)

Pin

Wire Color

Circuit No.

Function

A

DK BLU

604

A/C High Pressure Recirculation Switch Signal

B

BLK

150

Ground

Air Temperature 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

341

Ignition 3 Voltage

6

DK BLU

1199

Air Temperature Door Control

7

GRY/BLK

1798

Ground

8

--

--

Not Used

9

LT BLU

733

Air Temperature Door Position Signal

10

GRY

598

5 Volt Reference

Air Temperature Sensor Assembly - Inside - Over Head


Object Number: 130635  Size: CH

Connector Part Information

    • 12045813
    • 4-Way F Metri-Pack 150 (NAT)

Pin

Wire Color

Circuit No.

Function

A

DK GRN

734

Inside Air Temperature Sensor Signal

B

PNK

39

Ignition 1 Voltage

C

BLK

1850

Ground

D

BRN

718

Low Reference

Air Temperature Sensor - Lower


Object Number: 82383  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

A

LT GRN

405

Lower Air Temperature Sensor Signal

B

BRN

718

Low Reference

Air Temperature Sensor - Ambient


Object Number: 635009  Size: CH

Connector Part Information

    • 12052641
    • 2-Way F Metri-Pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

LT GRN/BLK

735

Ambient Air Temperature Sensor Signal

B

BRN

718

Low Reference

Air Temperature Sensor - Upper


Object Number: 82383  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

A

BRN

404

Upper Air Temperature Sensor Signal

B

BRN

718

Low 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

PPL

65

Blower Motor Supply Voltage

B

BLK

1050

Ground

Blower Motor Control Processor


Object Number: 68737  Size: CH

Connector Part Information

    • 12129489
    • 3-Way F Metri-Pack 280 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK

1050

Ground

B

GRY/BLK

754

Blower Motor Speed Control

C

ORN

540

Battery Positive Voltage

Blower Motor Resistor Assembly


Object Number: 73146  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

A

TAN

63

Medium 1 [position X] Blower Motor Control

B

YEL

60

Low [position X] Blower Motor Control

C

PPL

73

Medium 3 [position X] Blower Motor Control

D

LT BLU

72

Medium 2 [position X] Blower Motor Control

E

BLK

1050

Ground

F

ORN

52

High [position X] Blower Motor Control

G

ORN

540

Battery Positive Voltage

HVAC Control Module


Object Number: 73157  Size: CH

Connector Part Information

    • 12045575
    • 32-Way F Micro-Pack 100 Series (BLK)

Pin

Wire Color

Circuit No.

Function

C1

LT BLU/BLK

590

Sunload Sensor Signal

C2

BRN

404

Upper Air Temperature Sensor Signal

C3

LT GRN

405

Lower Air Temperature Sensor Signal

C4

LT BLU

733

Temperature Actuator Position Signal

C5

PPL

1838

Recirculation Door Position Signal

C6

BRN

341

Ignition 3 Voltage

C7

DK GRN

1614

Recirculation Door Control

C8

WHT

119

Mode Door Control

C9

DK BLU

1199

Air Temperature Door Control

C10

BLK

2450

Ground

C11

WHT

1038

HVAC Class 2 Serial Data

C12

ORN

340

Battery Positive Voltage

C13-C15

--

--

Not Used

C16

GRY/BLK

754

Blower Motor Speed Control

D1

DK GRN

734

Inside Air Temperature Sensor Signal

D2

LT GRN/BLK

735

Ambient Air Temperature Sensor Signal

D3

RED

708

Mode Door Position Signal

D4

--

--

Not Used

D5

GRY

598

5 Volt Reference

D6

--

--

Not Used

D7

GRY

8

Instrument Panel Lamp Supply Voltage - 1

D8

LT BLU

203

A/C Request Signal

D9

BRN

718

Low Reference

D10

GRY/BLK

1798

Ground

D11

LT BLU

2820

HVAC Control Module Clock Signal

D12

LT BLU

2819

HVAC Control Module Data Signal

D13

--

--

Not Used

D14

WHT

193

Rear Defog Relay Control

D15-D16

--

--

Not Used

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

341

Ignition 3 Voltage

6

WHT

119

Mode Door Control

7

GRY/BLK

1798

Ground

8

--

--

Not Used

9

RED

708

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

341

Ignition 3 Voltage

6

DK GRN

1614

Recirculation Door Motor Control

7

GRY/BLK

1798

Ground

8

--

--

Not Used

9

PPL

1838

Recirculation Door Position Signal

10

GRY

598

5 Volt Reference

Sunload 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

LT BLU/BLK

590

Sunload Sensor Signal

B

BRN

718

Low Reference