GM Service Manual Online
For 1990-2009 cars only
Table 1: A/C Compressor Clutch (1.2L)
Table 2: A/C Compressor Clutch (1.4L/1.5L/1.6L)
Table 3: A/C Refrigerant Pressure Sensor (1.2L)
Table 4: A/C Refrigerant Pressure Sensor (1.4L/1.5L/1.6L)
Table 5: Air Mix Door Motor
Table 6: Ambient Air Temperature Sensor
Table 7: Blower Motor
Table 8: Blower Motor Control Module
Table 9: Coolant Temperature Sensor
Table 10: HVAC Control - A
Table 11: HVAC Control - B
Table 12: Inside Air Temperature Sensor
Table 13: Intake Motor
Table 14: Intake Sensor
Table 15: Mode Motor
Table 16: Sunload Sensor

A/C Compressor Clutch (1.2L)


Object Number: 1497744  Size: CH

Connector Part Information

    •  MG610041
    • 1-Way F 250 Series

Pin

Wire

Circuit

Function

1

OG/BK

--

A/C Compressor Clutch Supply Voltage

A/C Compressor Clutch (1.4L/1.5L/1.6L)


Object Number: 1334534  Size: CH

Connector Part Information

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

Pin

Wire

Circuit

Function

A

OG/BK

--

A/C Compressor Clutch Supply Voltage

B

BK

--

Ground

A/C Refrigerant Pressure Sensor (1.2L)


Object Number: 1688761  Size: CH

Connector Part Information

    • 12078090
    • 3-Way F Metri-Pack 150 Series (WH)

Pin

Wire

Circuit

Function

1

L-GN

--

5-Volt Reference

2

L-BU

--

Low Reference

3

OG/BK

--

A/C Refrigerant Pressure Sensor Signal

A/C Refrigerant Pressure Sensor (1.4L/1.5L/1.6L)


Object Number: 1688761  Size: CH

Connector Part Information

    • 12078090
    • 3-Way F Metri-Pack 150 Series (WH)

Pin

Wire

Circuit

Function

1

OG/BK

--

5-Volt Reference

2

L-BU

--

Low Reference

3

L-BU

--

A/C Refrigerant Pressure Sensor Signal

Air Mix Door Motor


Object Number: 1619746  Size: CH

Connector Part Information

    • MG651444
    • 3-Way F

Pin

Wire

Circuit

Function

1

RD/BU

--

Reference Voltage

2

BK

--

Ground

3

D-BU

--

Signal

Ambient Air Temperature Sensor


Object Number: 1468380  Size: CH

Connector Part Information

    • MG610489
    • 2-Way F NMWP 04F-B Assembly

Pin

Wire

Circuit

Function

1

YE

--

Ambient Air Temperature Sensor Signal

2

L-GN/BK

--

Low Reference

Blower Motor


Object Number: 1467007  Size: CH

Connector Part Information

    • MG610043
    • 2-Way F 250 Series (WH)

Pin

Wire

Circuit

Function

1

D-BU/RD

--

Blower Motor Control

2

RD/WH

--

Blower Motor Supply Voltage

Blower Motor Control Module


Object Number: 1468409  Size: CH

Connector Part Information

    • MG610043
    • 4-Way F

Pin

Wire

Circuit

Function

1

D-BU/YE

--

Blower Motor Speed Control

2

D-BU/RD

--

Blower Motor Control

3

--

--

Not Used

4

BK

--

Ground

Coolant Temperature Sensor


Object Number: 1467020  Size: CH

Connector Part Information

    • MG620490
    • 2-Way F

Pin

Wire

Circuit

Function

1

D-GN/RD

--

Coolant Temperature Sensor Signal

2

D-BU/WH

--

Low Reference

HVAC Control - A


Object Number: 1467032  Size: CH

Connector Part Information

    • 179057-6
    • 20-Way F

Pin

Wire

Circuit

Function

1

--

--

Not Used

2

L-GN

--

Vehicle Speed Signal

3

YE/BK

--

Washer Switch Signal

4

--

--

Not Used

5

L-GN/RD

--

5-Volt Reference

6

RD/YE

--

PTC ON

7

--

--

Not Used

8

WH/BK

--

Inside Air Temperature Sensor Signal

9

D-GN/YE

--

Ambient Air Temperature Sensor Signal

10

BK/YE

--

Intake Sensor Signal

11

YE/D-GN

--

A/C Request Signal

12-14

--

--

Not Used

15

D-BU

--

Signal

16

D-GN/RD

--

Coolant Temperature Sensor Signal

17-18

--

--

Not Used

19

YE/RD

--

Sunload Sensor Signal

20

D-BU/WH

--

Low Reference

HVAC Control - B


Object Number: 1468412  Size: CH

Connector Part Information

    • 179054-6
    • 16-Way F

Pin

Wire

Circuit

Function

1

--

--

Not Used

2

YE/WH

--

Ignition 3 Voltage

3

WH/RD

--

Battery Voltage

4

D-GN/BK

--

Instrument Panel Lamps Dimming Control

5

D-GN/WH

--

Instrument Panel Lamps Dimming Supply Voltage

6

BN/RD

--

Rear Defogger Relay Control

7

--

--

Not Used

8

RD/D-BU

--

VACTR (+)

9

--

--

Not Used

10

D-BU/YE

--

Blower Motor Speed Control

11

D-BU/RD

--

Blower Feedback

12

RD/WH

--

Ignition Voltage

13

BK

--

Ground

14-15

--

--

Not Used

16

D-GN

--

Fan Switch ON

Inside Air Temperature Sensor


Object Number: 1468403  Size: CH

Connector Part Information

    • 174056-2
    • 2-Way M

Pin

Wire

Circuit

Function

1

WH/BK

--

Inside Air Temperature Sensor Signal

2

D-BU/WH

--

Low Reference

Intake Motor


Object Number: 1619746  Size: CH

Connector Part Information

    • MG651444
    • 3-Way M

Pin

Wire

Circuit

Function

1

RD/D-BU

--

Reference Voltage

2

BK

--

Ground

3

D-BU

--

Signal

Intake Sensor


Object Number: 1468403  Size: CH

Connector Part Information

    • MG652630
    • 2-Way M

Pin

Wire

Circuit

Function

1

BK/YE

--

Intake Sensor Signal

2

D-BU/WH

--

Low Reference

Mode Motor


Object Number: 1619746  Size: CH

Connector Part Information

    • MG651444
    • 3-Way M

Pin

Wire

Circuit

Function

1

RD/D-BU

--

Reference Voltage

2

BK

--

Ground

3

D-BU

--

Signal

Sunload Sensor


Object Number: 1467049  Size: CH

Connector Part Information

    • 174056-2
    • 2-Way F

Pin

Wire

Circuit

Function

1

D-BU/WH

--

Low Reference

2

D-GN/RD

--

Sunload Sensor Signal