GM Service Manual Online
For 1990-2009 cars only
Connector 1: A/C Compressor Clutch
Connector 2: A/C Refrigerant Pressure Sensor (LX9)
Connector 3: A/C Refrigerant Pressure Sensor (LY7)
Connector 4: Air Temperature Actuator - Left
Connector 5: Air Temperature Actuator - Right
Connector 6: Blower Motor
Connector 7: Blower Motor Control Module
Connector 8: Evaporator Temperature Sensor
Connector 9: HVAC Control Module
Connector 10: Mode Actuator
Connector 11: Recirculation Actuator
Connector 12: Sunload Sensor

A/C Compressor Clutch


Object Number: 537107  Size: CH

Connector Part Information

  • OEM: 12052644
  • Service: See Catalog
  • Description: 2-Way F Metri-Pack 150 Series (L-GY)

Terminal Part Information

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

A/C Compressor Clutch

Pin

Wire Color

Circuit No.

Function

A

D-GN

59

A/C Compressor Clutch Supply Voltage

B

BK

1050

Ground (LX9)

BK

1450

Ground (LY7)

A/C Refrigerant Pressure Sensor (LX9)


Object Number: 1519475  Size: CH

Connector Part Information

  • OEM: 15477863
  • Service: 88988301
  • Description: 3-Way F GT 150 Series Sealed (GY)

Terminal Part Information

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

A/C Refrigerant Pressure Sensor (LX9)

Pin

Wire Color

Circuit No.

Function

1

BK/WH

2751

Low Reference

2

GY

2700

5-Volt Reference

3

RD/BK

380

A/C Refrigerant Pressure Sensor Signal

A/C Refrigerant Pressure Sensor (LY7)


Object Number: 258299  Size: CH

Connector Part Information

  • OEM: 12110192
  • Service: 88988301
  • Description: 3-Way F Metri-Pack 150 Series Sealed (BK)

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 (LY7)

Pin

Wire Color

Circuit No.

Function

A

BK

2759

Low Reference

B

GY

2709

5-Volt Reference

C

RD/BK

380

A/C Refrigerant Pressure Sensor Signal

Air Temperature Actuator - Left


Object Number: 40427  Size: CH

Connector Part Information

  • OEM: 12064978
  • Service: 12125678
  • Description: 6-Way F Micro-Pack 100 Series (GY)

Terminal Part Information

  • Terminal/Tray: 12146447/3
  • Core/Insulation Crimp: E/C
  • Release Tool/Test Probe: 12031876-1/J-35616-6 (BN)

Air Temperature Actuator - Left

Pin

Wire Color

Circuit No.

Function

1

BN

241

Ignition 3 Voltage

2

D-BU

1199

Left Air Temperature Door Control

3

BK

150

Ground

4

--

--

Not Used

5

L-BU

733

Left Air Temperature Door Position Signal

6

GY

598

5-Volt Reference

Air Temperature Actuator - Right


Object Number: 280764  Size: CH

Connector Part Information

  • OEM: 12064993
  • Service: 12102485
  • Description: 6-Way F Micro-Pack 100 Series (BK)

Terminal Part Information

  • Terminal/Tray: 12146447/3
  • Core/Insulation Crimp: E/C
  • Release Tool/Test Probe: 12031876-1/J-35616-6 (BN)

Air Temperature Actuator - Right

Pin

Wire Color

Circuit No.

Function

5

BN

241

Ignition 3 Voltage

6

WH/BK

1236

Right Air Temperature Door Control

7

BK

150

Ground

8

--

--

Not Used

9

D-BU

1646

Right Air Temperature Door Position Signal

10

GY

598

5-Volt Reference

Blower Motor


Object Number: 62488  Size: CH

Connector Part Information

  • OEM: 12084957
  • Service: 12126461
  • Description: 2-Way F Metri-Pack 280 Series (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

A

RD

--

Blower Motor Supply Voltage

B

BK

--

Ground

Blower Motor Control Module


Object Number: 821354  Size: CH

Connector Part Information

  • OEM: 12105056
  • Service: 88987868
  • Description: 4-Way F Yazaki 250 CN Housing (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

Pin

Wire Color

Circuit No.

Function

1

RD

442

Battery Positive Voltage

2

OG

761

Blower Motor Speed Signal

3

GY/BK

754

Blower Motor Speed Control

4

BK

150

Ground

Evaporator Temperature Sensor


Object Number: 280768  Size: CH

Connector Part Information

  • OEM: 12052832
  • Service: 12101825
  • Description: 2-Way F Metri-Pack 150 Series (BK)

Terminal Part Information

  • Terminal/Tray: 12064971/5
  • Core/Insulation Crimp: E/C
  • Release Tool/Test Probe: 12094429/J-35616-2A (GY)

Evaporator Temperature Sensor

Pin

Wire Color

Circuit No.

Function

A

WH

2622

Evaporator Temperature Sensor Signal

B

BK

552

Low Reference

HVAC Control Module


Object Number: 130690  Size: CH

Connector Part Information

  • OEM: 12110206
  • Service: 12110206
  • Description: 24-Way F Micro-Pack 100 Series (L-BU)

Terminal Part Information

  • Terminal/Tray: 12146447/3
  • Core/Insulation Crimp: E/C
  • Release Tool/Test Probe: 12031876-1/J-35616-6 (BN)

HVAC Control Module

Pin

Wire Color

Circuit No.

Function

A1

BK

552

Low Reference

A2

--

--

Not Used

A3

WH

2622

Evaporator Temperature Sensor Signal

A4

L-BU/BK

590

Sunload Sensor Signal

A5-A6

--

--

Not Used

A7

GY/BK

754

Blower Motor Speed Control

A8

OG

761

Blower Motor Speed Signal

A9

--

--

Not Used

A10

BK

150

Ground

A11

BN

241

Ignition 3 Voltage

A12

OG

640

Battery Positive Voltage

B1

D-BU

1646

Right Air Temperature Door Position Signal

B2

L-BU

733

Left Air Temperature Door Position Signal

B3

YE/BK

713

Mode Door Position Signal

B4

GY

598

5-Volt Reference

B5

WH/BK

1236

Right Air Temperature Door Control

B6

D-BU

1199

Left Air Temperature Door Control

B7

TN

2273

Mode Door Control

B8

TN/BK

2274

Recirculation Door Control

B9

WH

1038

Class 2 Serial Data

B10

--

--

Not Used

B11

WH

193

Rear Defog Relay Control

B12

GY

8

Instrument Panel Lamp Supply Voltage

Mode Actuator


Object Number: 280764  Size: CH

Connector Part Information

  • OEM: 12064993
  • Service: 12102485
  • Description: 6-Way F Micro-Pack 100 Series (BK)

Terminal Part Information

  • Terminal/Tray: 12146447/3
  • Core/Insulation Crimp: E/C
  • Release Tool/Test Probe: 12031876-1/J-35616-6 (BN)

Mode Actuator

Pin

Wire Color

Circuit No.

Function

5

BN

241

Ignition 3 Voltage

6

TN

2273

Mode Door Control

7

BK

150

Ground

8

--

--

Not Used

9

YE/BK

713

Mode Door Position Signal

10

GY

598

5-Volt Reference

Recirculation Actuator


Object Number: 280764  Size: CH

Connector Part Information

  • OEM: 12064993
  • Service: 12102485
  • Description: 6-Way F Micro-Pack 100 Series (BK)

Terminal Part Information

  • Terminal/Tray: 12146447/3
  • Core/Insulation Crimp: E/C
  • Release Tool/Test Probe: 12031876-1/J-35616-6 (BN)

Recirculation Actuator

Pin

Wire Color

Circuit No.

Function

5

BN

241

Ignition 3 Voltage

6

TN/BK

2274

Recirculation Door Control

7

BK

150

Ground

8-10

--

--

Not Used

Sunload Sensor


Object Number: 821858  Size: CH

Connector Part Information

  • OEM: 15316639
  • Service: 15306434
  • Description: 2-Way F Multilock 040 (BK)

Terminal Part Information

  • Terminal/Tray: 173681-2/17
  • Core/Insulation Crimp: E/4
  • Release Tool/Test Probe: 15315247/J-35616-16 (L-GN)

Sunload Sensor

Pin

Wire Color

Circuit No.

Function

1

L-BU/BK

590

Sunload Sensor Signal

2

BK

552

Low Reference