GM Service Manual Online
For 1990-2009 cars only
Table 1: A/C Compressor Clutch
Table 2: A/C Low Pressure Switch
Table 3: A/C Refrigerant Pressure Sensor
Table 4: Air Temperature Actuator - Left
Table 5: Air Temperature Actuator - Right
Table 6: Ambient Light Sensor
Table 7: Blower Motor Resistor Assembly
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: 684852  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 Low Pressure Switch


Object Number: 537107  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

A

DK BLU

204

A/C Low Pressure Sensor Signal

B

BLK

550

Ground

A/C Refrigerant Pressure Sensor


Object Number: 726824  Size: CH

Connector Part Information

    • 15344137
    • 3-Way F GT 150 Sealed (BLK)

Pin

Wire Color

Circuit No.

Function

1

BLK

2751

Low Reference

2

GRY

2700

5 Volt Reference

3

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

341

Ignition 3 Voltage

6

DK BLU

1199

Left Air Temperature Door Control

7

YEL

1791

Ground

8

--

--

Not Used

9

LT BLU

733

Air Temperature Door Position Signal

10

LT BLU/

BLK

1688

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

341

Ignition 3 Voltage

6

WHT/BLK

1236

Right Air Temperature Door Control

7

YEL

1791

Ground

8

--

--

Not Used

9

DK BLU

1646

Right Air Temperature Door Position Signal

10

LT BLU/

BLK

1688

5 Volt Reference

Ambient Light Sensor


Object Number: 82383  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit Number

Function

A

WHT

278

Ambient Light Sensor Signal

B

BLK

279

Ambient Light Sensor Low Reference

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 Blower Motor Control

B

YEL

60

Blower Motor Low Control

C

PPL

73

Medium 3 Blower Motor Control

D

LT BLU

72

Medium 2 Blower Motor Control

E

BLK

1050

Ground

F

ORN

52

Blower Motor High Control

G

RED

542

Battery Positive Voltage

HVAC Control Module - C1


Object Number: 130690  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

A1

DK GRN

1614

Recirculation Door Control

A2

DK BLU

1646

Right Air Temperature Door Position Signal

A3

LT BLU

733

Left Air Temperature Door Position Signal

A4

--

--

Not Used

A5

LT GRN

2275

Mode Door Position Signal

A6

--

--

Not Used

A7

BRN/WHT

230

Instrument Panel Lamps Dimming Control"

A8

BLK

1851

Ground

A9-A10

--

--

Not Used

A11

DK GRN

71

OFF Blower Motor Control

A12

DK BLU

204

A/C Low Pressure Sensor Signal

B1

WHT/BLK

1236

Right Air Temperature Door Control

B2

DK BLU

1199

Left Air Temperature Door Control

B3

--

--

Not Used

B4

TAN

2273

Mode Door Control

B5

BRN

341

Ignition 3 Voltage

B6

YEL

1791

Low Reference

B7

ORN

4340

Battery Positive Voltage

B8

LT BLU/

BLK

1688

5 Volt Reference

B9

BLK

1050

Ground

B10

--

--

Not Used

B11

WHT

1038

HVAC Class 2 Serial Data

B12

--

--

Not Used

HVAC Control Module - C2


Object Number: 556473  Size: CH

Connector Part Information

    • 15326924
    • 8-Way F GT 280 (BLK)

Pin

Wire Color

Circuit Number

Function

A

PPL

73

Medium 3 Blower Motor Control

B

LT BLU

72

Medium 2 Blower Motor Control

C

TAN

63

Blower Motor Medium 1 Control

D

YEL

60

Blower Motor Low Control

E

--

--

Not Used

F

ORN

52

Blower Motor High Control

G

BRN

141

Ignition 3 Voltage

H

DK GRN

71

OFF Blower Motor Control

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

TAN

2273

Mode Door Control

7

YEL

1791

Low Reference

8

--

--

Not Used

9

LT GRN

2275

Mode Door Position Signal

10

LT BLU/

BLK

1688

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 Control

7

BLK

1050

Ground

8-10

--

--

Not Used