GM Service Manual Online
For 1990-2009 cars only
Table 1: A/C Clutch
Table 2: A/C High Pressure Switch
Table 3: A/C High Side Temperature Sensor
Table 4: A/C Low Pressure Switch
Table 5: A/C Low Side Temperature Sensor
Table 6: Ambient Air Temperature Sensor
Table 7: Blower Motor
Table 8: Climate Control Panel (CCP)
Table 9: Driver Air Mix Actuator
Table 10: Heater and A/C Programmer C1
Table 11: Heater and A/C Programmer C2
Table 12: Heater and A/C Programmer C2 (Eldorado)
Table 13: Inadvertent Power Relay
Table 14: Inside Air Temperature Sensor (Deville)
Table 15: Inside Air Temperature Sensor (Eldorado)
Table 16: Passenger Air Mix Actuator
Table 17: Passenger Temperature Control
Table 18: Rear Blower Motor
Table 19: Rear Blower Motor Resistor Module
Table 20: Rear Blower Switch
Table 21: Sun Load Temperature Sensor
Table 22: Vacuum and Electric Solenoid

A/C Clutch


Object Number: 280759  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

A

DK GRN

59

Clutch Solenoid Feed

B

BLK

350

Ground

A/C High Pressure Switch


Object Number: 333039  Size: CH

Connector Part Information

    • 12186686
    • 2-Way F Metri-Pack 150 Series (GRY)

Pin

Wire Color

Circuit No.

Function

A

DK GRN

603

Low Pressure Cut-Off Switch Output

B

DK BLU

604

High Pressure Cut-Off Switch Output

A/C High Side Temperature Sensor


Object Number: 130692  Size: CH

Connector Part Information

    • 12092512
    • 2-Way (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK

407

Sensor Return

B

DK BLU

732

A/C High Side Temp Sensor Input

A/C Low Pressure Switch


Object Number: 35437  Size: CH

Connector Part Information

    • 12186685
    • 2-Way F Metri-Pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

PNK

339

Fused Output - IGN

B

DK GRN

603

Low Pressure Cut-Off Switch Output

A/C Low Side Temperature Sensor


Object Number: 130692  Size: CH

Connector Part Information

    • 12092512
    • 2-Way (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK

407

Sensor Return

B

GRY

731

A/C Low Side Temp Sensor Input

Ambient Air Temperature Sensor


Object Number: 232831  Size: CH

Connector Part Information

    • 12162192
    • 2-Way F Metri-Pack 150.2 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK

407

Sensor Return

B

LT GRN/BLK

735

Outside Ambient Temperature Sensor Signal

Blower Motor


Object Number: 333029  Size: CH

Connector Part Information

    • 12092310
    • 3-Way Merti-Pack 480 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK

50

Ground

B

GRY

754

Blower Speed Signal (Speed Control)

C

RED

542

Fuse Output (Battery)

Climate Control Panel (CCP)


Object Number: 73152  Size: CH

Connector Part Information

    • 12110259
    • 16-Way F Micro-Pack 100 Series (GRN)

Pin

Wire Color

Circuit No.

Function

A1

--

--

Not Used

A2

LT GRN

147

Fuse Output (Off/Run)

A3

--

--

Not Used

A4

GRY

8

Instrument Panel Lamp Feed

A5-A7

--

--

Not Used

A8

PPL

1807

Serial Data Signal (Class B)

B1-B2

--

--

Not Used

B3

BLK

150

Ground

B4

GRY

8

Instrument Panel Lamp Feed

B5

--

--

Not Used

B6

BLK/WHT

151

Ground

B7

--

--

Not Used

B8

PPL

1807

Serial Data Signal (Class B)

Driver Air Mix Actuator


Object Number: 281207  Size: CH

Connector Part Information

    • 12040953
    • 6-Way F Micro-Pack 100 Series (BLK)

Pin

Wire Color

Circuit No.

Function

5

LT GRN

147

Fuse Output (Off/Run)

6

DK BLU/WHT

831

HVAC Control Assembly Signal

7

BLK

407

Sensor Return

8

--

--

Not Used

9

YEL/BLK

1814

Mode Valve Position Sensor (Lower)

10

GRY

705

Reference Voltage Feed (5 Volts)

Heater and A/C Programmer C1


Object Number: 130689  Size: CH

Connector Part Information

    • 12110244
    • 24-Way F Micro-Pack 100 Series (PNK)

Pin

Wire Color

Circuit No.

Function

A1

GRY

705

Reference Voltage Feed (5 Volt)

A2

GRY

705

Reference Voltage Feed (5 Volt with 652)

A3

LT BLU

706

Mode Valve Solenoid Output (Recirculation)

A4

LT GRN/ WHT

274

HVAC Solenoid Output

A5

LT BLU/ BLK

1880

HVAC Control Assembly Signal (Driver)

A6

TAN

363

Mode Valve Solenoid Output (Upper)

A7

LT GRN/ BLK

366

Mode Valve Solenoid Output (Lower)

A8

PPL

361

Mode Valve Solenoid (Defrost)

A9

DK BLU/ WHT

831

HVAC Control Assembly (Passenger with CJ2)

A10

YEL/BLK

1814

Mode Valve Position Sensor Signal Lower with CJ2)

A11

RED

708

Fuse Output (Off/Run)

A12

LT GRN

147

Fuse Output (Off/Run)

B1-B7

--

--

Not Used

B8

BLK

407

Sensor Return

B9

BLK

407

Sensor Return (with CJ2)

B10

--

--

Not Used

B11

LT GRN

147

Fuse Output (Off/Run)

B12

LT GRN

147

Fuse Output (With CJ2)

Heater and A/C Programmer C2


Object Number: 333019  Size: CH

Connector Part Information

    • 12110245
    • 32-Way M Micro-Pack 100 Series (DK BLU)

Pin

Wire Color

Circuit No.

Function

C1-C2

--

--

Not Used

C3

ORN

2640

Fuse Output (Battery)

C4

ORN

52

Blower Switch Output (High with D55)

C5

DK BLU

732

Air Conditioning Refrigerant High Temperature Sensor Signal

C6

GRY

731

Air Conditioning Refrigerant Low Temperature Sensor Signal

C7

LT BLU/ BLK

590

Solar Sensor Signal (Driver)

C8

LTGRN/ BLK

735

Outside Ambient Temperature Sensor Signal

C9-C16

--

--

Not Used

D1

LT GRN

147

Fuse Output (Off/Run)

D2

PPL

1807

Serial Data Signal (Class B)

D3

GRY

754

Blower Speed Signal (Speed Control)

D4

PPL

1807

Serial Data Signal (Class B)

D5-D6

--

--

Not Used

D7

BLK/ WHT

151

Ground

D8

BLK

407

Sensor Return

D9

DK GRN

734

Inside Temperature Sensor Signal

D10-D13

--

--

Not Used

D14

DK GRN

603

Air Conditioning Refrigerant Low Pressure Cut Out Switch

D15

DK BLU

604

Air Conditioning Refrigerant High Pressure Cut Out Switch

D16

--

--

Not Used

Heater and A/C Programmer C2 (Eldorado)


Object Number: 73157  Size: CH

Connector Part Information

    • 12110207
    • 32-Way F Micro-Pack 100 Series (LT BLU)

Pin

Wire Color

Circuit No.

Function

C1-C2

--

--

Not Used

C3

ORN

2640

Fuse Output (Battery)

C4

ORN

52

Blower Switch Output (High)

C5

DK BLU

732

Air Conditioning Refrigerant High Temperature Sensor Signal

C6

GRY

731

Air Conditioning Refrigerant Low Temperature Sensor Signal

C7

LT BLU/ BLK

590

Solar Sensor Signal Driver

C8

LT GRN/ BLK

735

Outside Ambient Temperature Sensor

C9-C16

--

--

Not Used

D1

LT GRN

147

Fuse Output (Off/Run)

D2

PPL

1807

Serial Data Signal (Class B)

D3

GRY

754

Blower Speed Signal (Speed Control)

D4

PPL

1807

Serial Data Signal (Class B)

D5-D6

--

--

Not Used

D7

BLK/ WHT

151

Ground

D8

BLK

407

Sensor Return

D9

DK GRN

734

Inside Temperature Sensor Signal

D10-D13

--

--

Not Used

D14

DK GRN

603

Air Conditioning Refrigerant Low Pressure Cut Out Switch

D15

DK BLU

604

Air Conditioning Refrigerant High Pressure Cut Out Switch

D16

--

--

Not Used

Inadvertent Power Relay


Object Number: 281201  Size: CH

Connector Part Information

    • 12110541
    • 6-Way F Metri-Pack 280 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A1

ORN

1740

Fuse Output (Battery)

A2

PPL/WHT

65

Blower Motor Fuse

A2

PPL

65

Blower Motor Fuse

B1-B2

--

--

Not Used

C1

RED

542

Fuse Output (Battery)

C2

BRN

247

Blower Enable Relay Output (Coil)

Inside Air Temperature Sensor (Deville)


Object Number: 35455  Size: CH

Connector Part Information

    • 12059252
    • 2-Way M Metri-Pack 150 Series (RED)

Pin

Wire Color

Circuit No.

Function

A

DK GRN

734

Inside Temperature Sensor Signal

B

BLK

407

Sensor Return

Inside Air Temperature Sensor (Eldorado)


Object Number: 82383  Size: CH

Connector Part Information

    • 12047662
    • 2-Way Metri-Pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK

407

Sensor Return

B

DK GRN

734

Inside Temperature Sensor Signal

Passenger Air Mix Actuator


Object Number: 281207  Size: CH

Connector Part Information

    • 12040353
    • 6-Way F Micro-Pack 100 Series (BLK)

Pin

Wire Color

Circuit No.

Function

5

LT GRN

147

Fuse Output (Off/Run)

6

LT BLU/BLK

1880

HVAC Control Assembly Signal

7

BLK

407

Sensor Return

8

--

--

Not Used

9

RED

708

Module Valve Postion Sensor Signal (Upper)

10

GRY

705

Reference Voltage Feed (5 Volt Ref.)

Passenger Temperature Control


Object Number: 280793  Size: CH

Connector Part Information

    • 12052444
    • 8-Way F Micro-Pack 100 Series (BLK)

Pin

Wire Color

Circuit No.

Function

1

BLK

150

Ground

2

BLK

407

Sensor Return

3

LT GRN

147

Fuse Output (Off/Run)

4

--

--

Not Used

5

PPL

1370

Dual Zone Switch Lamp Output

6

DK BLU/ WHT

831

HVAC Control Assembly Signal (Passenger)

7

BRN

1244

Instrument Panel Lamp Feed (2)

8

DK BLU

1336

Dual Zone Switch Output

Rear Blower Motor


Object Number: 130724  Size: CH

Connector Part Information

    • 12064869
    • 2-Way F Metri-Pack 150 Series (BLU)

Pin

Wire Color

Circuit No.

Function

A

BRN

41

Fuse Output (Ignition 3)

B

ORN

52

Blower Switch Output (High)

Rear Blower Motor Resistor Module


Object Number: 73229  Size: CH

Connector Part Information

    • 12129566
    • 4-Way F Metri-Pack 280 Series (MD GRY)

Pin

Wire Color

Circuit No.

Function

A

LT BLU

72

Blower Switch Output (Medium 2)

B

PPL

73

Blower Switch Output (Medium 3)

C

ORN

52

Blower Switch Output (High)

D

TAN

63

Blower Switch Output (Medium 1)

Rear Blower Switch


Object Number: 39746  Size: CH

Connector Part Information

    • 12064862
    • 8-Way F Metri-Pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK

850

Ground

B

ORN

52

Blower Motor Switch Output (HIGH)

C

PPL

73

Blower Motor Switch Output (Medium 3)

D

LT BLU

72

Blower Motor Switch Output (Medium 2)

E

TAN

63

Blower Motor Switch Output (Medium 1)

F

GRY

8

Instrument Panel Lamp Feed

G

BLK

850

Ground

H

--

--

Not Used

Sun Load Temperature Sensor


Object Number: 258301  Size: CH

Connector Part Information

    • 12059254
    • 2-Way M Metri-Pack 150 Series (LT GRN)

Pin

Wire Color

Circuit No.

Function

A

LT BLU/ BLK

590

Solar Sensor Signal - Driver

B

BLK

407

Sensor Return

Vacuum and Electric Solenoid


Object Number: 40427  Size: CH

Connector Part Information

    • 12064978
    • 6-Way F Micro-Pack 100 Series (GRY)

Pin

Wire Color

Circuit No.

Function

1

LT GRN/ BLK

366

Solenoid Output - Down

2

PPL

361

Solenoid Output - Defrost

3

TAN

363

Solenoid Output - Up

4

LT BLU

706

Solenoid Output - Recirculation

5

LT GRN/ WHT

274

HVAC Solenoid Output

6

LT GRN

147

Fused Output - IGN