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: Blower Motor Resistor Assembly
Table 7: HVAC Control Module - C1
Table 8: HVAC Control Module - C2
Table 9: Mode Actuator
Table 10: Recirculation Actuator

A/C Compressor Clutch


Object Number: 684852  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

A

BK

550

Ground

B

D-GN

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 ( GY)

Pin

Wire Color

Circuit No.

Function

A

D-BU

204

A/C Low Pressure Sensor Signal

B

BK

550

Ground

A/C Refrigerant Pressure Sensor


Object Number: 726824  Size: CH

Connector Part Information

    • 15344137
    • 3-Way F GT 150 Series 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

Air Temperature Actuator - Left


Object Number: 280764  Size: CH

Connector Part Information

    • 12064993
    • 6-Way F Micro-Pack 100 Series (BK)

Pin

Wire Color

Circuit No.

Function

5

BN

341

Ignition 3 Voltage

6

D-BU

1199

Left Air Temperature Door Control

7

YE

1791

Low Reference

8

--

--

Not Used

9

L-BU

733

Air Temperature Door Position Signal

10

L-BU/BK

1688

5-Volt Reference

Air Temperature Actuator - Right


Object Number: 280764  Size: CH

Connector Part Information

    • 12064993
    • 6-Way F Micro-Pack 100 Series (BK)

Pin

Wire Color

Circuit No.

Function

5

BN

341

Ignition 3 Voltage

6

WH/BK

1236

Right Air Temperature Door Control

7

YE

1791

Low Reference

8

--

--

Not Used

9

D-BU

1646

Right Air Temperature Door Position Signal

10

L-BU/BK

1688

5-Volt Reference

Blower Motor Resistor Assembly


Object Number: 73146  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

A

TN

63

Medium 1 Blower Motor Control

B

YE

60

Blower Motor Low Control

C

PU

73

Medium 3 Blower Motor Control

D

L-BU

72

Medium 2 Blower Motor Control

E

BK

1050

Ground

F

OG

52

Blower Motor High Control

G

RD

542

Battery Positive Voltage

HVAC Control Module - C1


Object Number: 130690  Size: CH

Connector Part Information

    • 12110206
    • 24-Way F Micro-Pack 100 (L-BU)

Pin

Wire Color

Circuit No.

Function

A1

D-GN

1614

Recirculation Door Control

A2

D-BU

1646

Right Air Temperature Door Position Signal

A3

L-BU

733

Left Air Temperature Door Position Signal

A4

--

--

Not Used

A5

L-GN

2275

Mode Door Position Signal

A6

--

--

Not Used

A7

BN/WH

230

Instrument Panel Lamps Dimming Control

A8

BK/WH

1851

Ground

A9-A10

--

--

Not Used

A11

D-GN

71

OFF Blower Motor Control

A12

D-BU

204

A/C Low Pressure Sensor Signal

B1

WH/BK

1236

Right Air Temperature Door Control

B2

D-BU

1199

Left Air Temperature Door Control

B3

--

--

Not Used

B4

TN

2273

Mode Door Control

B5

BN

341

Ignition 3 Voltage

B6

YE

1791

Low Reference

B7

OG

4340

Battery Positive Voltage

B8

L-BU/BK

1688

5-Volt Reference

B9

BK

1050

Ground

B10

--

--

Not Used

B11

WH

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 Series (BK)

Pin

Wire Color

Circuit Number

Function

A

PU

73

Medium 3 Blower Motor Control

B

L-BU

72

Medium 2 Blower Motor Control

C

TN

63

Blower Motor Medium 1 Control

D

YE

60

Blower Motor Low Control

E

--

--

Not Used

F

OG

52

Blower Motor High Control

G

BN

141

Ignition 3 Voltage

H

D-GN

71

OFF Blower Motor Control

Mode Actuator


Object Number: 280764  Size: CH

Connector Part Information

    • 12064993
    • 6-Way F Micro-Pack 100 Series (BK)

Pin

Wire Color

Circuit No.

Function

5

BN

341

Ignition 3 Voltage

6

TN

2273

Mode Door Control

7

YE

1791

Low Reference

8

--

--

Not Used

9

L-GN

2275

Mode Door Position Signal

10

L-BU/BK

1688

5-Volt Reference

Recirculation Actuator


Object Number: 280764  Size: CH

Connector Part Information

    • 12064993
    • 6-Way F Micro-Pack 100 Series (BK)

Pin

Wire Color

Circuit No.

Function

5

BN

341

Ignition 3 Voltage

6

D-GN

1614

Recirculation Door Control

7

BK

1050

Ground

8-10

--

--

Not Used