GM Service Manual Online
For 1990-2009 cars only
Table 1: A/C Compressor Clutch (V8)
Table 2: A/C Compressor Clutch (V6)
Table 3: A/C Refrigerant Pressure Sensor
Table 4: Air Quality Sensor
Table 5: Inside Air Temperature Sensor
Table 6: Outside Ambient Air Temperature Sensor
Table 7: Blower Controller
Table 8: Blower Motor
Table 9: Internal Recirculation Actuator
Table 10: HVAC Control Module (CCP) - C1
Table 11: HVAC Control Module (CCP) - C2
Table 12: HVAC Control Module (CCP) - C3
Table 13: Mode Actuator
Table 14: Rear Mode Actuator
Table 15: Sunload Sensor
Table 16: Right Rear Defogger (C1)
Table 17: Right Rear Defogger (C2)
Table 18: Cooling Fan - Right (C1)
Table 19: Cooling Fan - Left (C2)

A/C Compressor Clutch (V8)


Object Number: 897985  Size: CH

A/C Compressor Clutch (V8)

Pin

Wire

Circuit

Function

1

D-GN

59

A/C Compressor Clutch Supply Voltage

2

BK

1550

Ground

A/C Compressor Clutch (V6)


Object Number: 897985  Size: CH

A/C Compressor Clutch (V6)

Pin

Wire

Circuit

Function

A

D-GN

59

A/C Compressor Clutch Supply Voltage

B

BK

750

Ground

A/C Refrigerant Pressure Sensor


Object Number: 258299  Size: CH

A/C Refrigerant Pressure Sensor

Pin

Wire

Circuit

Function

A

BK/WH

452

Signal Ground V8

BK

452

Sensor Low Reference V6

B

GY

596

A/C Pressure Sensor 5- Volt Reference V8

GY

596

5-Volt Reference V6

C

OG/BK

380

A/C Refrigerant Pressure Sensor Signal V8

OG/BK

380

A/C Refrigerant Pressure Sensor Signal V6

Air Quality Sensor


Object Number: 1455873  Size: CH

Air Quality Sensor

Pin

Wire

Circuit

Function

1

YE

61

Outside Ambient Temperature Sensor Low Reference

2

PU/WH

5203

Air Quality HC Sensor Signal

3

PK

1439

Run/ Crank Ignition 1 Voltage

4

L-GN/WH

6845

Air Quality NOX Sensor Signal

5

--

--

Not Used

6

BK

250

Ground

Inside Air Temperature Sensor


Object Number: 1283891  Size: CH

Inside Air Temperature Sensor

Pin

Wire

Circuit

Function

1

YE

61

Outside Ambient Temperature Sensor Low Reference

2

D-GN

734

Inside Air Temperature Sensor Signal

Outside Ambient Air Temperature Sensor


Object Number: 684793  Size: CH

Outside Ambient Air Temperature Sensor

Pin

Wire

Circuit

Function

A

L-GN/BK

735

Outside Ambient Air Temperature Sensor Signal

B

YE

61

Outside Ambient Temperature Sensor Low Reference

Blower Controller


Object Number: 1331457  Size: CH

Blower Controller

Pin

Wire

Circuit

Function

1

PU

374

Blower Motor Speed Control

2

L-BU

188

Blower Motor Resistor Assembly Supply Voltage

3

GY/BK

754

Blower Motor Fan Control

4

BK

450

Ground

Blower Motor


Object Number: 1385124  Size: CH

Blower Motor

Pin

Wire

Circuit

Function

1

PU

374

Blower Motor Speed Control

2

L-BU

188

Blower Motor Resistor Assembly Supply Voltage

Internal Recirculation Actuator


Object Number: 1283833  Size: CH

Internal Recirculation Actuator

Pin

Wire

Circuit

Function

1

YE

61

Outside Ambient Temperature Sensor Low Reference

2

GY

705

5-Volt Reference

3

BN

41

Run Ignition 3 Voltage

4

PU

1838

Internal Recirculation Mode Door Position Signal

5

D-GN

1614

Circulation Door Control

HVAC Control Module (CCP) - C1


Object Number: 2013402  Size: CH

HVAC Control Module (CCP) - C1

Pin

Wire

Circuit

Function

1

GY

705

5-Volt Reference

2

--

--

Not Used

3

D-GN

5060

Low speed GMLAN serial data

4-5

--

--

Not Used

6

BN

247

Blower Relay

7-8

--

--

Not Used

9

RD/WH

340

Power Input

10

YE

61

Sensor Reference Voltage

11

BK/WH

451

Ground

12-15

--

--

Not Used

16

GY/BK

754

Signal Voltage Control

17

--

--

Not Used

18

PK

1539

Operating

HVAC Control Module (CCP) - C2


Object Number: 2013404  Size: CH

HVAC Control Module (CCP) - C2

Pin

Wire

Circuit

Function

1

L-BU

733

Driver Air Temperature Motor Signal Input

2

D-GN

5518

Rear Temperature Motor Signal Input

3

GY

2599

Rear Mode Motor Signal Input

4

--

--

Not Used

5

WH

278

Solar Battery Signal

6

GY

1548

Front Passenger Solar Sensor

7

D-GN

734

Inside Air Temperature Sensor

8

PU/WH

5203

HC Sensor

9

D-BU

1646

Passenger Air Temperature Motor Signal Input

10

YE/BK

1814

Driver Mode Motor Signal Input

11

BN

41

Recirculation Motor Signal Input

12

--

--

Not Used

13

L-BU/BK

590

Driver Solar Sensor

14

GY

731

Evaporator Temperature Sensor

15

L-GN/BK

735

Outside Ambient Air Temperature

16

L-GN/WH

6845

NOX Sensor

HVAC Control Module (CCP) - C3


Object Number: 2013407  Size: CH

HVAC Control Module (CCP) - C3

Pin

Wire

Circuit

Function

1-2

--

--

Not Used

3

PU

1838

Recirculation Motor Reference Voltage

4

YE

1318

Driver Mode Motor Air Door Control

5

GY/BK

2778

Passenger Temperature Motor Reference Voltage

6

YE

1791

Driver Temperature Motor Reference Voltage

7

L-GN/WH

5729

Rear Mode Motor Air Door Control

8

L-BU

5517

Rear Temperature Motor Reference Voltage

9

--

--

Not Used

10

YE

6817

LED Backlight Dimming Control

11

--

--

Not Used

12

D-GN

1614

Recirculation Motor

13

TN

2273

Driver Mode Motor Reference Voltage

14

WH/BK

1236

Passenger Temperature Door Control

15

D-BU

1199

Driver Temperature Door Control

16

L-GN/BK

5730

Rear Mode Motor Reference Voltage

17

BN

5516

Rear Temperature Motor Air Door Control

18

--

--

Not Used

Mode Actuator


Object Number: 2013411  Size: CH

Mode Actuator

Pin

Wire

Circuit

Function

1

GY/BK

2778

Passenger Temperature Motor (hot)

2

WH/BK

1236

Passenger Temperature Motor (cold)

3

D-BU

1646

Passenger Temperature Motor Signal Output

4

YE

1318

Driver Mode Motor Supply

5

TN

2273

Driver Mode Motor Control Signal

6

YE/BK

1814

Driver Mode Motor Signal Output

7

D-GN

5518

Rear Temperature Motor Signal Output

8

L-BU

5517

Rear Temperature Motor (hot)

9

BN

5516

Rear Temperature Motor (cold)

10

GY

705

5V Switch

11

YE

1791

Driver Temperature Motor (hot)

12

L-BU

733

Driver Temperature Motor Signal Output

13

D-BU

1199

Driver Temperature Motor (cold)

14

YE

61

Sensor Reference Voltage

15

GY

731

Evaporator Temperature Sensor Control Signal Output

16

--

--

Not Used

Rear Mode Actuator


Object Number: 2013414  Size: CH

Rear Mode Actuator

Pin

Wire

Circuit

Function

1

YE

61

Reference Voltage

2

GY

705

5V Switch

3

GY

2599

Rear Mode Motor Signal Output

4

L-GN/WH

5729

Rear Mode Motor Air Door Control

5

L-GN/BK

5730

Rear Mode Motor Reference Voltage

Sunload Sensor


Object Number: 130637  Size: CH

Sunload Sensor

Pin

Wire

Circuit

Function

A

L-BU/BK

590

Solar Sensor Driver Signal

B

GY

1548

Passenger Solar Sensor Signal

C

YE

61

Low Reference

D

WH

278

Ambient Light Sensor Signal

Right Rear Defogger (C1)


Object Number: 2013438  Size: CH

Right Rear Defogger (C1)

Pin

Wire

Circuit

Function

A

PU

293

Power Input

B

BK

1950

Ground

Right Rear Defogger (C2)


Object Number: 2013439  Size: CH

Right Rear Defogger (C2)

Pin

Wire

Circuit

Function

A

BK

1850

Ground

Cooling Fan - Right (C1)


Object Number: 811182  Size: CH

Cooling Fan - Right (C1)

Pin

Wire

Circuit

Function

1

L-BU

409

Cooling Fan Supply Power (1)

2

BK

250

Ground

Cooling Fan - Left (C2)


Object Number: 1283862  Size: CH

Cooling Fan - Left (C2)

Pin

Wire

Circuit

Function

1

GY

532

Cooling Fan Supply Voltage (2)

2

WH

504

Serial and Parallel Fan Relay