GM Service Manual Online
For 1990-2009 cars only
Table 1: A/C Compressor Clutch
Table 2: A/C Refrigerant Pressure Sensor (L26)
Table 3: A/C Refrigerant Pressure Sensor (LY7)
Table 4: Air Temperature Actuator - Left
Table 5: Air Temperature Actuator - Right
Table 6: Air Temperature Sensor - Inside
Table 7: Air Temperature Sensor - Lower Left
Table 8: Air Temperature Sensor - Lower Right
Table 9: Air Temperature Sensor - Upper Left
Table 10: Air Temperature Sensor - Upper Right
Table 11: Blower Motor
Table 12: Blower Motor Control Processor
Table 13: HVAC Control Module C1
Table 14: HVAC Control Module C2
Table 15: Mode Actuator
Table 16: Recirculation Actuator
Table 17: Sunload Sensor Assembly

A/C Compressor Clutch


Object Number: 1334534  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

A

D-GN

59

A/C Compressor Clutch Supply Voltage

B

BK

1050

Ground (L26)

BK

1450

Ground (LY7)

A/C Refrigerant Pressure Sensor (L26)


Object Number: 726824  Size: CH

Connector Part Information

    • OEM: 15344137
    • Service: 15306432
    • 3-Way F GT 150 Series Flexlock Sealed (BK)

Pin

Wire Color

Circuit No.

Function

1

BK

2751

Low Reference

2

GY

2700

5-Volt Reference

3

RD/BK

380

A/C Refrigerant Pressure Sensor Signal

A/C Refrigerant Pressure Sensor (LY7)


Object Number: 1519475  Size: CH

Connector Part Information

    • OEM: Assembly 15477863
        Connector 15478315
        Connector Seal 15439078
    • Service: See Catalog
    • 3-Way F GT 150 Series Sealed (BK)

Pin

Wire Color

Circuit No.

Function

1

BK

2759

Low Reference

2

GY

2709

5-Volt Reference

3

RD/BK

380

A/C Refrigerant Pressure Sensor Signal

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

YE

1791

Left Air Temperature Door Control A

B

D-BU/WH

1199

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

Air Temperature Sensor - Inside


Object Number: 1362560  Size: CH

Connector Part Information

    • OEM: 10738109 (Delphi)
        49901221 (Cinch)
    • Service: See Catalog
    • 6-Way F Quadlok Micro (BK)

Pin

Wire Color

Circuit No.

Function

1

PK

739

Ignition 1 Voltage

2

--

--

Not Used

3

BK/WH

1551

Ground

4

D-GN

734

Inside Air Temperature Sensor Signal

5

--

--

Not Used

6

GY

720

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/WH

518

Lower Left Air Temperature Sensor Signal

B

YE

61

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

OG/BK

1057

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

BK

516

Upper Left Air Temperature Sensor Signal

B

BN

718

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

PU

719

Low Reference

Blower Motor


Object Number: 62488  Size: CH

Connector Part Information

    • OEM: 12084957
    • Service: 12126461
    • 2-Way F Metri-Pack 280 Series (BK)

Pin

Wire Color

Circuit No.

Function

A

PU

65

Blower Motor Supply Voltage

B

BK

2150

Ground

Blower Motor Control Processor


Object Number: 62432  Size: CH

Connector Part Information

    • OEM: 12041429
    • Service: 12167129
    • 5-Way F Metri-Pack 280 Series (BK)

Pin

Wire Color

Circuit No.

Function

A

BK

1450

Ground

B

GY/BK

754

Blower Motor Speed Control

C

RD

442

Battery Positive Voltage

D

BK

2150

Ground

E

PU

65

Blower Motor Supply Voltage

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

OG

1040

Battery Positive Voltage

A2

PK

739

Ignition 1 Voltage

A3

WH

1038

HVAC Class 2 Serial Data

A4

--

--

Not Used

A5

GY

8

Instrument Panel Lamp Supply Voltage

A6

BK

1450

Ground

A7

D-GN

734

Inside Air Temperature Sensor Signal

A8

GY

720

Low Reference

B1

BK

516

Upper Left Air Temperature Sensor Signal

B2

--

--

Not Used

B3

TN

517

Upper Right Air Temperature Sensor Signal

B4

PU

719

Low Reference

B5

L-BU/BK

590

Driver Sunload Sensor Signal

B6

GY

1548

Passenger Sunload Sensor Signal

B7

BN

718

Low Reference

B8

BK/WH

1551

Ground

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

TN/WH

518

Lower Left Air Temperature Sensor Signal

A2

YE

61

Low Reference

A3

TN/BK

520

Lower Right Air Temperature Sensor Signal

A4

OG/BK

1057

Low Reference

A5-A6

--

--

Not Used

A7

GY/BK

754

Blower Motor Speed Control

A8

--

--

Not Used

B1

L-GN/BK

1647

Recirculation Door Control A

B2

PK/WH

1648

Recirculation Door Control B

B3

YE

1791

Left Air Temperature Door Control A

B4

D-BU/WH

1199

Left Air Temperature Door Control B

B5

WH/BK

1236

Right Air Temperature Door Control A

B6

D-BU

1646

Right Air Temperature Door Control B

B7

TN

2273

Mode Door Control A

B8

L-GN

2275

Mode Door Position Signal

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 Position Signal

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: See Catalog
    • 4-Way F Metri-Pack 150 Series (BK)

Pin

Wire Color

Circuit No.

Function

A

L-BU/BK

590

Driver Sunload Sensor Signal

B

GY

1548

Passenger Sunload Sensor Signal

C

BK/WH

1551

Ground

D

L-GN/BK

1137

DRL Ambient Light Sensor Signal