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 (C60) or Air Temperature Actuator - Left (CJ3)
Connector 4: Air Temperature Actuator - Right (CJ3)
Connector 5: Blower Motor
Connector 6: Blower Motor Resistor Assembly
Connector 7: Evaporator Temperature Sensor
Connector 8: HVAC Control Module C1
Connector 9: HVAC Control Module C2
Connector 10: Mode Actuator
Connector 11: Recirculation Actuator

A/C Compressor Clutch


Object Number: 537107  Size: CH

Connector Part Information

  • OEM: 12052644
  • Service: 15306302
  • 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

A/C Refrigerant Pressure Sensor


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

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

Air Temperature Actuator (C60) or Air Temperature Actuator - Left (CJ3)


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 (C60) or Air Temperature Actuator - Left (CJ3)

Pin

Wire Color

Circuit No.

Function

1-2

--

--

Not Used

3

BK

150

Ground

4

D-BU

1199

Air Temperature Door Control (C60)

4

D-BU

1199

Left Air Temperature Door Control (CJ3)

5

--

--

Not Used

6

BN

241

Ignition 3 Voltage

Air Temperature Actuator - Right (CJ3)


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 (CJ3)

Pin

Wire Color

Circuit No.

Function

5-6

--

--

Not Used

7

BK

150

Ground

8

WH/BK

1236

Right Air Temperature Door Control

9

--

--

Not Used

10

BN

241

Ignition 3 Voltage

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/WH

--

Ground

Blower Motor Resistor Assembly


Object Number: 73146  Size: CH

Connector Part Information

  • OEM: 12052854
  • Service: 88953358
  • Description: 7-Way F Metri-Pack 280 Series (BK)

Terminal Part Information

  • Pins: A, B, C, D, F
  • Terminal/Tray: 12034046/2
  • Core/Insulation Crimp: C/D
  • Release Tool/Test Probe: 12094430/J-35616-4A (PU)
  • Pins: E, G
  • Terminal/Tray: 12015858/4
  • Core/Insulation Crimp: F/G
  • Release Tool/Test Probe: 12094430/J-35616-4A (PU)

Blower Motor Resistor Assembly

Pin

Wire Color

Circuit No.

Function

A

TN

63

Medium 1 Blower Motor Control

B

YE

60

Low Blower Motor Control

C

PU

73

Medium 3 Blower Motor Control

D

L-BU

72

Medium 2 Blower Motor Control

E

BK

150

Ground

F

OG

52

High Blower Motor Control

G

RD

442

Battery Positive Voltage

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 C1


Object Number: 744295  Size: CH

Connector Part Information

  • OEM: 12084994
  • Service: 12084944
  • Description: 16-Way F Micro-Pack 100 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

HVAC Control Module C1

Pin

Wire Color

Circuit No.

Function

A1

OG

640

Battery Positive Voltage

A2

BN

241

Ignition 3 Voltage

A3

BN

9

Park Lamp Supply Voltage

A4

WH

193

Rear Defog Relay Control

A5

TN/BK

2274

Recirculation Door Control

A6

D-GN/WH

762

A/C Request Signal

A7

TN

2273

Mode Door Control

A8

D-BU

1199

Air Temperature Door Control (C60)

A8

D-BU

1199

Left Air Temperature Door Control (CJ3)

B1

BK

150

Ground

B2

BK

552

Low Reference

B3

WH

2622

Evaporator Temperature Sensor Signal

B4

GY

8

Instrument Panel Lamp Supply Voltage

B5

D-GN

71

Off Blower Motor Control

B6

WH/BK

1236

Right Air Temperature Door Control

B7-B8

--

--

Not Used

HVAC Control Module C2


Object Number: 62469  Size: CH

Connector Part Information

  • OEM: 12064998
  • Service: 15306189
  • Description: 8-Way F Metri-Pack 280 Series (BK)

Terminal Part Information

  • Pins: A, C, E, F, G, H
  • Terminal/Tray: 12034046/2
  • Core/Insulation Crimp: C/D
  • Release Tool/Test Probe: 12094430/J-35616-4A (PU)
  • Pin: B
  • Terminal/Tray: 12015858/4
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: 12094430/J-35616-4A (PU)

HVAC Control Module C2

Pin

Wire Color

Circuit No.

Function

A

D-GN

71

Off Blower Motor Control

B

BN

41

Ignition 3 Voltage

C

OG

52

High Blower Motor Control

D

--

--

Not Used

E

PU

73

Medium 3 Blower Motor Control

F

L-BU

72

Medium 2 Blower Motor Control

G

TN

63

Medium 1 Blower Motor Control

H

YE

60

Low Blower Motor Control

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

5-6

--

--

Not Used

7

BK

150

Ground

8

TN

2273

Mode Door Control

9

--

--

Not Used

10

BN

241

Ignition 3 Voltage

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