GM Service Manual Online
For 1990-2009 cars only
Table 1: A/C Compressor Clutch
Table 2: A/C Refrigerant Pressure Sensor
Table 3: Evaporator Temperature Sensor
Table 4: Blower Motor
Table 5: Blower Motor Resistor
Table 6: HVAC Control Module C1
Table 7: HVAC Control Module C2
Table 8: Mode Actuator -- Defrost
Table 9: Mode Actuator -- Floor
Table 10: Mode Actuator -- Panel
Table 11: Recirculation Actuator

A/C Compressor Clutch


Object Number: 925542  Size: CH

Connector Part Information

    • XW4T-14A624-AA
    • 2-Way F (BK)

Pin

Wire Color

Circuit No.

Function

1

D-GN

59

A/C Compressor Clutch Supply Voltage

2

BK

150

Ground

A/C Refrigerant Pressure Sensor


Object Number: 726824  Size: CH

Connector Part Information

    • 15344137
    • 3-Way F (BK)

Pin

Wire Color

Circuit No.

Function

1

BK

2751

Low Reference

2

GY

2700

5 Volt Reference (w/L61)

2

GY

2709

5 Volt Reference (w/L81)

3

RD/BK

380

A/C Refrigerant Pressure Sensor Signal

Evaporator Temperature Sensor


Object Number: 635009  Size: CH

Connector Part Information

    • 12052641
    • 2-Way Metri-Pack 150 Series (BK)

Pin

Wire Color

Circuit No.

Function

A

GY

731

A/C Refrigerant Low Temperature Sensor Signal

B

PU

719

Low Reference

Blower Motor


Object Number: 927767  Size: CH

Connector Part Information

    • E6DB-14489-ALA
    • 2-Way F (BK)

Pin

Wire Color

Circuit No.

Function

1

OG

1140

Battery Positive Voltage

2

PU

73

Blower Motor High Control

Blower Motor Resistor


Object Number: 697053  Size: CH

Connector Part Information

    • 12129565
    • 4-Way F Metri-Pack 280 Series Sealed (GY)

Pin

Wire Color

Circuit No.

Function

A

TN

63

Blower Motor Medium 1 Control

B

PU

73

Blower Motor High Control

C

L-BU

72

Blower Motor Medium 2 Control

D

YE

60

Blower Motor Low Control

HVAC Control Module C1


Object Number: 750205  Size: CH

Connector Part Information

    • 174047-2
    • 20-Way F Hinged Lock (BK)

Pin

Wire Color

Circuit No.

Function

1

BK/WH

151

Ground

2

GY

8

Park Lamp Supply Voltage

3

L-GN

66

A/C Request Signal

4

WH

193

Rear Defogger Relay Control

5

GY

705

5 Volt Reference

6

PU/WH

3361

Defrost Mode Valve Solenoid Control B

7

PU

361

Defrost Mode Valve Solenoid Control A

8

PK/WH

1648

Recirculation Door Control A

9

L-GN/BK

1647

Recirculation Door Control B

10

L-BU

292

Rear Defog Switch Signal

11

BN

41

Ignition 3 Voltage

12

BK

407

Low Reference

13

RD

708

Mode Door Position Signal

14

YE/BK

1814

Lower Mode Door Position Signal

15

YE/BK

713

Defrost Mode Valve Position Sensor Signal

16

OG/WH

3362

Upper Mode Valve Solenoid Control B

17

RD

362

Upper Mode Valve Solenoid Control A

18

L-GN/BK

3366

Lower Mode Valve Solenoid Control B

19

L-GN/WH

366

Lower Mode Valve Solenoid Control A

20

YE

60

Blower Motor Low Control - Redundant

HVAC Control Module C2


Object Number: 927811  Size: CH

Connector Part Information

    • 7283-5591-40
    • 6-Way F (L-GY)

Pin

Wire Color

Circuit No.

Function

1

PU

73

Blower Motor High Control

2

TN

63

Blower Motor Medium 1 Control

3

BN

7741

HVAC Blower Relay Control

4

YE

60

Blower Motor Low Control

YE

60

Blower Motor Low Control

5

--

--

Not Used

6

L-BU

72

Blower Motor Medium 2 Control

Mode Actuator -- Defrost


Object Number: 280764  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

5

PU

361

Defrost Mode Valve Solenoid Control A

6

PU/WH

3361

Defrost Mode Valve Solenoid Control B

7

--

--

Not Used

8

BK

407

Low Reference

9

YE/BK

713

Defrost Mode Valve Position Sensor Signal

10

GY

705

5 Volt Reference

Mode Actuator -- Floor


Object Number: 280764  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

5

L-GN/WH

366

Lower Mode Valve Solenoid Control A

6

L-GN/BK

3366

Lower Mode Valve Solenoid Control B

7

--

--

Not Used

8

BK

407

Low Reference

9

YE/BK

1814

Lower Mode Door Position Signal

10

GY

705

5 Volt Reference

Mode Actuator -- Panel


Object Number: 280764  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

5

RD

362

Upper Mode Vlave Solenoid Control A

6

OG/WH

3362

Upper Mode Vlave Solenoid Control B

7

--

--

Not Used

8

BK

407

Low Reference

9

RD

708

Mode Door Position Signal

10

GY

705

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

L-GN/BK

1647

Recirculation Door Control B

6

PK/WH

1648

Recirculation Door Control A

7-10

--

--

Not Used