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 Sensor - Inside
Table 4: Air Temperature Sensor - Lower Left
Table 5: Air Temperature Sensor - Lower Right
Table 6: Air Temperature Sensor - Upper Left
Table 7: Air Temperature Sensor - Upper Right
Table 8: Air Temperature Actuator - Left
Table 9: Air Temperature Actuator - Right
Table 10: Ambient Air Temperature Sensor
Table 11: Blower Motor Control Processor
Table 12: HVAC Control Module C1
Table 13: HVAC Control Module C2
Table 14: HVAC Control Module C3
Table 15: Mode Actuator
Table 16: Recirculation Actuator
Table 17: Sunload Sensor Assembly

A/C Compressor Clutch


Object Number: 684852  Size: CH

Connector Part Information

    • OEM: 12162017
    • Service: 12101937
    • 2-Way F Metri-Pack 150 Series (GY)

Pin

Wire Color

Circuit No.

Function

A

BK

1250

Ground

B

D-GN

59

A/C Compressor Clutch Supply Voltage

A/C Refrigerant Pressure Sensor


Object Number: 258299  Size: CH

Connector Part Information

    • OEM: 12186827
    • Service: 12102748
    • 3-Way F Metri-Pack 150 Series (BK)

Pin

Wire Color

Circuit No.

Function

A

BK/WH

2751

Low Reference

B

GY

2700

5-Volt Reference

C

OG/BK

380

A/C Refrigerant Pressure Sensor Signal

Air Temperature Sensor - Inside


Object Number: 1362560  Size: CH

Connector Part Information

    • OEM: 10738109
    • Service: 88953365
    • 6-Way F Metri-Pack 280Series (BK)

Pin

Wire Color

Circuit No.

Function

1

PK

639

Ignition 1 Voltage

2

--

--

Not Used

3

L-GN

5962

Inside Air Temperature Sensor Blower Control

4

D-GN

734

Inside Air Temperature Sensor Signal

5

--

--

Not Used

6

YE

61

Low Reference

Air Temperature Sensor - Lower Left


Object Number: 82383  Size: CH

Connector Part Information

    • OEM: 12047662
    • Service: 12085535
    • 2-Way F Metri-Pack 150 Series (BK)

Pin

Wire Color

Circuit No.

Function

A

TN

518

Lower Left Air Temperature Sensor Signal

B

BN

718

Low Reference

Air Temperature Sensor - Lower Right


Object Number: 82383  Size: CH

Connector Part Information

    • OEM: 12047662
    • Service: 12085535
    • 2-Way F Metri-Pack 150 Series (BK)

Pin

Wire Color

Circuit No.

Function

A

TN/BK

520

Lower Right Air Temperature Sensor Signal

B

GY

720

Low Reference

Air Temperature Sensor - Upper Left


Object Number: 82383  Size: CH

Connector Part Information

    • OEM: 12047662
    • Service: 12085535
    • 2-Way F Metri-Pack 150 Series (BK)

Pin

Wire Color

Circuit No.

Function

A

TN

516

Upper Left Air Temperature Sensor Signal

B

YE

61

Low Reference

Air Temperature Sensor - Upper Right


Object Number: 82383  Size: CH

Connector Part Information

    • OEM: 12047662
    • Service: 12085535
    • 2-Way F Metri-Pack 150 Series (BK)

Pin

Wire Color

Circuit No.

Function

A

TN

517

Upper Right Air Temperature Sensor Signal

B

YE

61

Low Reference

Air Temperature Actuator - Left


Object Number: 704047  Size: CH

Connector Part Information

    • OEM: 12059110
    • Service: 88953271
    • 2-Way F Metri-Pack 150 Series (BK)

Pin

Wire Color

Circuit No.

Function

A

D-BU/WH

1199

Left Air Temperature Door Control A

B

YE

1791

Left Air Temperature Door Control B

Air Temperature Actuator - Right


Object Number: 704047  Size: CH

Connector Part Information

    • OEM: 12059110
    • Service: 88953271
    • 2-Way F Metri-Pack 150 Series (BK)

Pin

Wire Color

Circuit No.

Function

A

WH/BK

1236

Right Air Temperature Door Control A

B

D-BU

1646

Right Air Temperature Door Control B

Ambient Air Temperature Sensor


Object Number: 635009  Size: CH

Connector Part Information

    • OEM: 12052635
    • Service: NS
    • 2-Way F Metri-Pack 150 Series (BK)

Pin

Wire Color

Circuit No.

Function

A

L-GN/BK

735

Ambient Air Temperature Sensor Signal

B

YE

61

Low Reference

Blower Motor Control Processor


Object Number: 68737  Size: CH

Connector Part Information

    • OEM: 12129489
    • Service: 12126486
    • 3-Way F Metri-Pack 280 Series Flexlock (BK)

Pin

Wire Color

Circuit No.

Function

A

RD/BK

442

Battery Positive Voltage

B

GY/BK

754

Blower Motor Speed Control

C

BK

1550

Ground

HVAC Control Module C1


Object Number: 744296  Size: CH

Connector Part Information

    • OEM: 12110259
    • Service: 12110259
    • 16-Way F Micro-Pack 100 Series (GN)

Pin

Wire Color

Circuit No.

Function

A1

BK

1550

Ground

A2

WH

1038

HVAC Class 2 Serial Data

A3- A6

--

--

Not Used

A7

D-GN

734

Inside Air Temperature Sensor Signal

A8

TN

517

Upper Right Air Temperature Sensor Signal

B1

YE

61

Low Reference

B2

D-BU/WH

1355

Valet Mode Switch Signal

B3

YE/BK

68

Low Coolant Level Indicator Control

B4

L-GN

735

Ambient Air Temperature Sensor Signal

B5

L-BU/BK

590

Driver Sunload Sensor Signal

B6

GY

1548

Passenger Sunload Sensor Signal

B7

WH

278

Ambient Light Sensor Signal

B8

TN

516

Upper Left Air Temperature Sensor Signal

HVAC Control Module C2


Object Number: 744295  Size: CH

Connector Part Information

    • OEM: 12084944
    • Service: 12084944
    • 16-Way F Micro-Pack 100 Series (BK)

Pin

Wire Color

Circuit No.

Function

A1

WH

193

Rear Defog Relay Control

A2

BN

1244

Instrument Panel Lamp Supply Voltage - 2

A3

L-GN

5962

Inside Air Temperature Sensor Blower Control

A4-A6

--

--

Not Used

A7

PK

639

Ignition 1 Voltage

A8

RD/WH

1240

Battery Positive Voltage

B1

GY/BK

1458

Instrument Panel Lamp Supply Voltage - 4

B2

GY/BK

1357

Instrument Panel Lamp Control

B3

GY/BK

754

Blower Motor Speed Control

B4

PK/BK

1503

Passenger Seat Temperature Control Signal

B5

PK

1501

Driver Seat Temperature Control Signal

B6-B8

--

--

Not Used

HVAC Control Module C3


Object Number: 73152  Size: CH

Connector Part Information

    • OEM: 12084945
    • Service: 12084945
    • 16-Way F Micro-Pack 100 Series (GY)

Pin

Wire Color

Circuit No.

Function

A1

D-BU/WH

1199

Left Air Temperature Door Control A

A2

WH/BK

1236

Right Air Temperature Door Control A

A3

L-GN/BK

1647

Recirculation Door Control A

A4

TN

2273

Mode Door Control A

A5

BN

718

Low Reference

A6

TN

518

Lower Left Air Temperature Sensor Signal

A7

GY

720

Low Reference

A8

TN/BK

520

Lower Right Air Temperature Sensor Signal

B1

YE

1791

Left Air Temperature Door Control B

B2

D-BU

1646

Right Air Temperature Door Control B

B3

PK/WH

1648

Recirculation Door Control B

B4

L-GN

2275

Mode Door Control B

B5-B8

--

--

Not Used

Mode Actuator


Object Number: 333035  Size: CH

Connector Part Information

    • OEM: 12047781
    • Service: 12101864
    • 3-Way F Metri-Pack 150 Series (BK)

Pin

Wire Color

Circuit No.

Function

A

TN

2273

Mode Door Control A

B

--

--

Not Used

C

L-GN

2275

Mode Door Control B

Recirculation Actuator


Object Number: 704047  Size: CH

Connector Part Information

    • OEM: 12059110
    • Service: 88953271
    • 2-Way F Metri-Pack 150 Series (BK)

Pin

Wire Color

Circuit No.

Function

A

L-GN/BK

1647

Recirculation Door Control A

B

PK/WH

1648

Recirculation Door Control B

Sunload Sensor Assembly


Object Number: 130637  Size: CH

Connector Part Information

    • OEM: 12064760
    • Service: 12085208
    • 4-Way F Metri-Pack 150 Series (BK)

Pin

Wire Color

Circuit No.

Function

A

LT BU/BK

590

Driver Solar Sensor Signal

B

GY

1548

Passenger Sunload Sensor Signal

C

YE

61

Low Reference

D

WH

278

Ambient Light Sensor Signal