GM Service Manual Online
For 1990-2009 cars only
Connector 1: A/C Compressor Clutch
Connector 2: A/C Refrigerant Pressure Sensor
Connector 3: Air Temperature Actuator - Driver
Connector 4: Air Temperature Actuator - Front Passenger
Connector 5: Air Temperature Sensor - Inside
Connector 6: Ambient Air Temperature Sensor
Connector 7: Blower Motor
Connector 8: Blower Motor Control Module C1
Connector 9: Blower Motor Control Module C2
Connector 10: HVAC Control Module C1
Connector 11: HVAC Control Module C2
Connector 12: HVAC Control Module C3
Connector 13: Mode Actuator
Connector 14: Recirculation Actuator

A/C Compressor Clutch


Object Number: 897985  Size: CH

Connector Part Information

  • OEM: 7282-5548-30
  • Service: 88953303
  • Description: 2-Way M YESC Weather Pack (BK)

Terminal Part Information

  • Terminal/Tray: 7114-4102-08/9
  • Core/Insulation Crimp: E/1
  • Release Tool/Test Probe: 12094430/J-35616-3 (GY)

A/C Compressor Clutch

Pin

Wire Color

Circuit No.

Function

1

D-GN

59

A/C Compressor Clutch Supply Voltage

2

BK/WH

1551

Ground (L26)

2

BK

1150

Ground (LD8)

A/C Refrigerant Pressure Sensor


Object Number: 258299  Size: CH

Connector Part Information

  • OEM: 12078090
  • Service: 88988301
  • Description: 3-Way F Metri-Pack 150 Series (NA)

Terminal Part Information

  • Terminal/Tray: 12103881/2
  • Core/Insulation Crimp: E/C
  • Release Tool/Test Probe: 12180559-1/J-35616-2A (GY)

A/C Refrigerant Pressure Sensor

Pin

Wire Color

Circuit No.

Function

A

YE/GY

5514

Low Reference (L26)

A

L-BU

5514

Low Reference (LD8)

B

GY

2700

5-Volt Reference (L26)

B

GY/BK

2700

5-Volt Reference (LD8)

C

OG/BK

380

A/C Refrigerant Pressure Sensor Signal (L26)

C

OG/WH

380

A/C Refrigerant Pressure Sensor Signal (LD8)

Air Temperature Actuator - Driver


Object Number: 1283833  Size: CH

Connector Part Information

  • OEM: 7283-5830-30
  • Service: 89046839
  • Description: 5-Way F (BK)

Terminal Part Information

  • Terminal/Tray: See Terminal Repair Kit
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: See Terminal Repair Kit

Air Temperature Actuator - Driver

Pin

Wire Color

Circuit No.

Function

1

GY

598

5-Volt Reference

2

GY/BK

1798

Low Reference

3

L-BU

733

Driver Air Temperature Door Position Signal

4

YE

1791

Driver Air Temperature Door Control A

5

L-BU/YE

1199

Driver Air Temperature Door Control B

Air Temperature Actuator - Front Passenger


Object Number: 1283833  Size: CH

Connector Part Information

  • OEM: 7283-5830-30
  • Service: 89046839
  • Description: 5-Way F (BK)

Terminal Part Information

  • Terminal/Tray: See Terminal Repair Kit
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: See Terminal Repair Kit

Air Temperature Actuator - Front Passenger

Pin

Wire Color

Circuit No.

Function

1

GY/BK

1798

Low Reference

2

GY

598

5-Volt Reference

3

D-BU

1646

Passenger Air Temperature Door Position

4

WH/BK

1236

Passenger Air Temperature Door Control B

5

L-BU/PU

1641

Passenger Air Temperature Door Control A

Air Temperature Sensor - Inside


Object Number: 39661  Size: CH

Connector Part Information

  • OEM: 12047786
  • Service: 12085536
  • Description: 4-Way M Metri-Pack 150 Series (BK)

Terminal Part Information

  • Terminal/Tray: 12047581/2
  • Core/Insulation Crimp: E/C
  • Release Tool/Test Probe: 12094429/J-35616-3 (GY)

Air Temperature Sensor - Inside

Pin

Wire Color

Circuit No.

Function

A

D-GN

734

Inside Air Temperature Sensor Signal

B

WH/BK

5515

Air Temperature Motor Control

C

BK

350

Ground

D

GY/BK

1798

Low Reference

Ambient Air Temperature Sensor


Object Number: 684793  Size: CH

Connector Part Information

  • OEM: 12052642
  • Service: 12101856
  • Description: 2-Way M Metri-Pack 150 Series Sealed (L-GN)

Terminal Part Information

  • Terminal/Tray: 12048074/2
  • Core/Insulation Crimp: E/1
  • Release Tool/Test Probe: 12094429/J-35616-2A (GY)

Ambient Air Temperature Sensor

Pin

Wire Color

Circuit No.

Function

A

L-GN/BK

735

Ambient Air Temperature Sensor Signal

B

GY/BK

1798

Low Reference

Blower Motor


Object Number: 1664494  Size: CH

Connector Part Information

  • OEM: 6098-1315
  • Service: 88988637
  • Description: 2-Way F (BK)

Terminal Part Information

  • Terminal/Tray: See Terminal Repair Kit
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: See Terminal Repair Kit

Blower Motor

Pin

Wire Color

Circuit No.

Function

1

PU

65

Blower Motor Supply Voltage

2

BK/RD

5987

Front Blower Motor Low Reference

Blower Motor Control Module C1


Object Number: 1522871  Size: CH

Connector Part Information

  • OEM: 15226103
  • Service: 88988507
  • Description: 2-Way F (BK)

Terminal Part Information

  • Terminal/Tray: See Terminal Repair Kit
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: See Terminal Repair Kit

Blower Motor Control Module C1

Pin

Wire Color

Circuit No.

Function

1

PU

65

Blower Motor Supply Voltage

2

BK/RD

5987

Front Blower Motor Low Reference

Blower Motor Control Module C2


Object Number: 1798802  Size: CH

Connector Part Information

  • OEM: 7283-9749-30
  • Service: 88988512
  • Description: 6-Way F (BK)

Terminal Part Information

  • Terminal/Tray: See Terminal Repair Kit
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: See Terminal Repair Kit

Blower Motor Control Module C2

Pin

Wire Color

Circuit No.

Function

1-2

--

--

Not Used

3

GY/PK

754

Blower Motor Speed Control

4

--

--

Not Used

5

BK

450

Ground

6

PK/OG

2540

Battery Positive Voltage

HVAC Control Module C1


Object Number: 1664585  Size: CH

Connector Part Information

  • OEM: 7283-4544-30
  • Service: 89047360
  • Description: 18-Way F (BK)

Terminal Part Information

  • Pins: 1, 3, 4, 5, 7, 9, 10, 11, 15, 18
  • Terminal/Tray: 7116-4618-02/14
  • Core/Insulation Crimp: P/P
  • Release Tool/Test Probe: J-38125-215/J-35616-64B (L-BU)

HVAC Control Module C1

Pin

Wire Color

Circuit No.

Function

1

GY

598

5-Volt Reference

2

--

--

Not Used

3

WH

193

Rear Defog Relay Control

4

D-GN

5060

Low Speed GMLAN Serial Data

5

D-GN

5060

Low Speed GMLAN Serial Data

6

--

--

Not Used

7

GY/PK

754

Blower Motor Speed Control

8

--

--

Not Used

9

OG/PK

1840

Battery Positive Voltage

10

GY/BK

1798

Low Reference

11

BK

350

Ground

12-14

--

--

Not Used

15

WH/BK

5515

Air Temperature Motor Control

16-17

--

--

Not Used

18

PK

339

Ignition 1 Voltage

HVAC Control Module C2


Object Number: 1664586  Size: CH

Connector Part Information

  • OEM: 7283-9081
  • Service: 89047359
  • Description: 16-Way F (WH)

Terminal Part Information

  • Pins: 2, 3, 4, 5, 6, 7, 8, 10, 11
  • Terminal/Tray: 7116-4618-02/14
  • Core/Insulation Crimp: P/P
  • Release Tool/Test Probe: J-38125-215/J-35616-64B (L-BU)

HVAC Control Module C2

Pin

Wire Color

Circuit No.

Function

1

--

--

Not Used

2

L-BU

733

Driver Air Temperature Door Position Signal

3

YE/BK

1814

Lower Mode Door Position Signal

4

GY

1548

Right Sunload Sensor Signal

5

L-BU/BK

590

Left Sunload Sensor Signal

6

WH

2622

Evaporator Low Temperature Sensor Signal

7

L-GN/BK

735

Ambient Air Temperature Sensor Signal

8

D-GN

734

Inside Air Temperature Sensor Signal

9

--

--

Not Used

10

D-BU

1646

Passenger Air Temperature Door Position

11

L-BU/OG

706

Recirculation Valve Solenoid Signal

12-16

--

--

Not Used

HVAC Control Module C3


Object Number: 1664588  Size: CH

Connector Part Information

  • OEM: 7283-4548-60
  • Service: 89047361
  • Description: 18-Way F (GN)

Terminal Part Information

  • Pins: 1, 2, 4, 5, 6, 7, 13, 14, 15, 16
  • Terminal/Tray: 7116-4618-02/14
  • Core/Insulation Crimp: P/P
  • Release Tool/Test Probe: J-38125-215/J-35616-64B (L-BU)

HVAC Control Module C3

Pin

Wire Color

Circuit No.

Function

1

PU/WH

1382

LED Dimming Signal

2

YE

1491

Backlight Lamp Control

3

--

--

Not Used

4

WH/BK

1236

Passenger Air Temperature Door Control B

5

L-BU/YE

1199

Driver Air Temperature Door Control B

6

D-GN

1614

Recirculation Door Control B

7

YE/WH

1318

Lower Mode Door Control B

8-12

--

--

Not Used

13

L-BU/PU

1641

Passenger Air Temperature Door Control A

14

YE/GY

1791

Driver Air Temperature Door Control A

15

TN/BK

2274

Recirculation Door Control A

16

TN

2273

Mode Door Control A

17-18

--

--

Not Used

Mode Actuator


Object Number: 1283833  Size: CH

Connector Part Information

  • OEM: 7283-5830-30
  • Service: 89046839
  • Description: 5-Way F (BK)

Terminal Part Information

  • Terminal/Tray: See Terminal Repair Kit
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: See Terminal Repair Kit

Mode Actuator

Pin

Wire Color

Circuit No.

Function

1

GY

598

5-Volt Reference

2

GY/BK

1798

Low Reference

3

YE/BK

1814

Lower Mode Door Position Signal

4

TN

2273

Mode Door Control A

5

YE/GN

1318

Lower Mode Door Control B

Recirculation Actuator


Object Number: 1283833  Size: CH

Connector Part Information

  • OEM: 7283-5830-30
  • Service: 89046839
  • Description: 5-Way F (BK)

Terminal Part Information

  • Terminal/Tray: See Terminal Repair Kit
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: See Terminal Repair Kit

Recirculation Actuator

Pin

Wire Color

Circuit No.

Function

1

GY

598

5-Volt Reference

2

GY/BK

1798

Low Reference

3

L-BU

706

Recirculation Valve Solenoid Control

4

TN/BK

2274

Recirculation Door Control A

5

D-GN

1614

Recirculation Door Control B