GM Service Manual Online
For 1990-2009 cars only
Connector 1: A/C Compressor Clutch Assembly
Connector 2: A/C Low Pressure Switch
Connector 3: A/C Refrigerant Pressure Sensor
Connector 4: Air Temperature Actuator - Left
Connector 5: Air Temperature Actuator - Right
Connector 6: Blower Motor
Connector 7: Blower Motor Resistor Assembly
Connector 8: Console Mode Actuator - Auxiliary
Connector 9: Defrost Actuator
Connector 10: HVAC Control Module C1
Connector 11: HVAC Control Module C2
Connector 12: HVAC Control Module - Auxiliary
Connector 13: Mode Actuator
Connector 14: Recirculation Actuator

A/C Compressor Clutch Assembly


Object Number: 684807  Size: CH

Connector Part Information

  • OEM: 12110293
  • Service: 12117025
  • Description: 3-Way F Metri-Pack 150 Series Sealed (BK)

Terminal Part Information

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

A/C Compressor Clutch Assembly

Pin

Wire Color

Circuit No.

Function

A

BK

350

Ground

B

D-GN

59

A/C Compressor Clutch Supply Voltage

C

L-GN

2278

A/C Compressor Status Signal

A/C Low Pressure Switch


Object Number: 537107  Size: CH

Connector Part Information

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

Terminal Part Information

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

A/C Low Pressure Switch

Pin

Wire Color

Circuit No.

Function

A

D-BU

204

A/C Low Pressure Sensor Signal

B

BK

250

Ground

A/C Refrigerant Pressure Sensor


Object Number: 1519475  Size: CH

Connector Part Information

  • OEM: 15477863
  • Service: 89988144
  • Description: 3-Way F GT 150 Series Sealed (BK)

Terminal Part Information

  • Terminal/Tray: 15326267/19
  • Core/Insulation Crimp: E/4
  • Release Tool/Test Probe: 15315247/J-35616-2A (GY)

A/C Refrigerant Pressure Sensor

Pin

Wire Color

Circuit No.

Function

1

BK

2751

Low Reference

2

GY

2700

5-Volt Reference

3

RD/BK

380

A/C Refrigerant Pressure Sensor Signal

Air Temperature Actuator - Left


Object Number: 281207  Size: CH

Connector Part Information

  • OEM: 12040953
  • Service: 12102632
  • Description: 6-Way F Micro-Pack 100 Series Unsealed (BK)

Terminal Part Information

  • Pins: 5-7, 9-10
  • 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

5

BN

341

Ignition 3 Voltage

6

D-BU

1199

Left Air Temperature Door Control

7

YE

1791

Low Reference

8

--

--

Not Used

9

L-BU

733

Left Air Temperature Door Position Signal

10

L-BU /BK

1688

5-Volt Reference

Air Temperature Actuator - Right


Object Number: 281207  Size: CH

Connector Part Information

  • OEM: 12040953
  • Service: 12102632
  • Description: 6-Way F Micro-Pack 100 Series Unsealed (BK)

Terminal Part Information

  • Pins: 5-7, 9-10
  • 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

341

Ignition 3 Voltage

6

WH/BK

1236

Right Air Temperature Door Control

7

YE

1791

Low Reference

8

--

--

Not Used

9

D-BU

1646

Right Air Temperature Door Position Signal

10

L-BU /BK

1688

5-Volt Reference

Blower Motor


Object Number: 523591  Size: CH

Connector Part Information

  • OEM: 12066681
  • Service: 12126446
  • Description: 2-Way F Metri-Pack 630 Series Sealed (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

PU

65

Blower Motor Supply Voltage

B

BK

850

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 Unsealed (BK)

Terminal Part Information

  • Pins: A-D, F
  • Terminal/Tray: 12015858/4
  • Core/Insulation Crimp: See Terminal Repair Kit
  • 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

2250

Ground

F

OG

52

High Blower Motor Control

G

RD

542

Battery Positive Voltage

Console Mode Actuator - Auxiliary


Object Number: 258172  Size: CH

Connector Part Information

  • OEM: 12064982
  • Service: 12102633
  • Description: 5-Way F Micro-Pack 100 Series Unsealed (BK)

Terminal Part Information

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

Console Mode Actuator - Auxiliary

Pin

Wire Color

Circuit No.

Function

1

BN

341

Ignition 3 Voltage

2

WH

119

Auxiliary Mode Door Control

3

BK

2250

Ground

4-5

--

--

Not Used

Defrost Actuator


Object Number: 281207  Size: CH

Connector Part Information

  • OEM: 12040953
  • Service: 12102632
  • Description: 6-Way F Micro-Pack 100 Series Unsealed (BK)

Terminal Part Information

  • Pins: 5-7, 9-10
  • Terminal/Tray: 12146447/3
  • Core/Insulation Crimp: E/C
  • Release Tool/Test Probe: 12031876-1/J-35616-6 (BN)

Defrost Actuator

Pin

Wire Color

Circuit No.

Function

5

BN

341

Ignition 3 Voltage

6

TN/BK

2274

Defrost Door Control

7

YE

1791

Low Reference

8

--

--

Not Used

9

L-GN/BK

2276

Defrost Door Position Signal

10

L-BU/BK

1688

5-Volt Reference

HVAC Control Module C1


Object Number: 130690  Size: CH

Connector Part Information

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

Terminal Part Information

  • Pins: A1-A5, A7-A8, A10, A12, B1-B12
  • Terminal/Tray: 12146447/3
  • Core/Insulation Crimp: E/C
  • Release Tool/Test Probe: 12031876-1/J-35616-6 (BN)
  • Pins: A11
  • Terminal/Tray: 12146448/19
  • Core/Insulation Crimp: E/A
  • Release Tool/Test Probe: 12031876-1/J-35616-6 (BN)

HVAC Control Module C1

Pin

Wire Color

Circuit No.

Function

A1

D-GN

1614

Recirculation Door Control

A2

D-BU

1646

Right Air Temperature Door Position Signal

A3

L-BU

733

Left Air Temperature Door Position Signal

A4

L-GN/BK

2276

Defrost Door Position Signal

A5

L-GN

2275

Mode Door Position Signal

A6

--

--

Not Used

A7

BN/WH

230

Instrument Panel Lamps Dimming Control

A8

BK/WH

751

Ground

A9

--

--

Not Used

A10

YE

2277

Auxiliary HVAC Enable Control

A11

D-GN

71

OFF Blower Motor Control

A12

D-BU

204

A/C Low Pressure Sensor Signal

B1

WH/BK

1236

Right Air Temperature Door Control

B2

D-BU

1199

Left Air Temperature Door Control

B3

TN/BK

2274

Defrost Door Control

B4

TN

2273

Mode Door Control

B5

BN

341

Ignition 3 Voltage

B6

YE

1791

Low Reference

B7

OG

4340

Battery Positive Voltage

B8

L-BU/BK

1688

5-Volt Reference

B9

BK

2250

Ground

B10

--

--

Not Used

B11

WH

1038

Class 2 Serial Data

B12

L-GN

2278

A/C Compressor Status Signal

HVAC Control Module C2


Object Number: 556473  Size: CH

Connector Part Information

  • OEM: 15326924
  • Service: 15306174
  • Description: 8-Way F GT 280 Series Unsealed (BK)

Terminal Part Information

  • Pins: H
  • Terminal/Tray: 15304711/8
  • Core/Insulation Crimp: 2/A
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
  • Pins: A-D, F
  • Terminal/Tray: 15304713/19
  • Core/Insulation Crimp: 4/4
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
  • Pins: G
  • Terminal/Tray: 15304713/19
  • Core/Insulation Crimp: F/D
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)

HVAC Control Module C2

Pin

Wire Color

Circuit No.

Function

A

PU

73

Medium 3 Blower Motor Control

B

L-BU

72

Medium 2 Blower Motor Control

C

TN

63

Medium 1 Blower Motor Control

D

YE

60

Low Blower Motor Control

E

--

--

Not Used

F

OG

52

High Blower Motor Control

G

BN

141

Ignition 3 Voltage

H

D-GN

71

OFF Blower Motor Control

HVAC Control Module - Auxiliary


Object Number: 280793  Size: CH

Connector Part Information

  • OEM: 12052444
  • Service: 12101874
  • Description: 8-Way F Micro-Pack 100 Series Unsealed (BK)

Terminal Part Information

  • Pins: 1, 4, 6-8
  • Terminal/Tray: 12146447/3
  • Core/Insulation Crimp: E/C
  • Release Tool/Test Probe: 12031876-1/J-35616-6 (BN)

HVAC Control Module - Auxiliary

Pin

Wire Color

Circuit No.

Function

1

BN

341

Ignition 3 Voltage

2-3

--

--

Not Used

4

YE

2277

Auxiliary HVAC Enable Control

5

--

--

Not Used

6

WH

119

Auxiliary Mode Door Control

7

BK

2250

Ground

8

BN/WH

230

Instrument Panel Lamps Dimming Control

Mode Actuator


Object Number: 281207  Size: CH

Connector Part Information

  • OEM: 12040953
  • Service: 12102632
  • Description: 6-Way F Micro-Pack 100 Series (BK)

Terminal Part Information

  • Pins: 5-7, 9-10
  • 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

341

Ignition 3 Voltage

6

TN

2273

Mode Door Control

7

YE

1791

Low Reference

8

--

--

Not Used

9

L-GN

2275

Mode Door Position Signal

10

L-BU/BK

1688

5-Volt Reference

Recirculation Actuator


Object Number: 281207  Size: CH

Connector Part Information

  • OEM: 12040953
  • Service: 12102632
  • Description: 6-Way F Micro-Pack 100 Series Unsealed (BK)

Terminal Part Information

  • Pins: 5-7
  • 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

341

Ignition 3 Voltage

6

D-GN

1614

Recirculation Door Control

7

BK

2250

Ground

8-10

--

--

Not Used