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: Air Temperature Sensor Assembly - Inside
Connector 7: Air Temperature Sensor - Lower Left
Connector 8: Air Temperature Sensor - Lower Right
Connector 9: Air Temperature Sensor - Upper Left
Connector 10: Air Temperature Sensor - Upper Right
Connector 11: Ambient Air Temperature Sensor
Connector 12: Ambient Light/Sunload Sensor Assembly
Connector 13: Blower Motor
Connector 14: Blower Motor Control Module
Connector 15: Console Mode Actuator - Auxiliary
Connector 16: Defrost Actuator
Connector 17: HVAC Control Module C1
Connector 18: HVAC Control Module C2
Connector 19: HVAC Control Module - Auxiliary
Connector 20: Mode Actuator
Connector 21: Rear Blower Motor
Connector 22: Rear Blower Resistor
Connector 23: 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: 88988144
  • 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

Air Temperature Sensor Assembly - Inside


Object Number: 39661  Size: CH

Connector Part Information

  • OEM: 12047786
  • Service: 12085536
  • Description: 4-Way M Metri-Pack 150 Series Unsealed (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 Assembly - Inside

Pin

Wire Color

Circuit No.

Function

A

D-GN

734

Inside Air Temperature Sensor Signal

B

WH/BK

1236

Inside Air Temperature Sensor Assembly Control

C

BK

1350

Ground

D

BN

718

Low Reference

Air Temperature Sensor - Lower Left


Object Number: 82383  Size: CH

Connector Part Information

  • OEM: 12047662
  • Service: 12085535
  • Description: 2-Way F Metri-Pack 150 Series Unsealed (BK)

Terminal Part Information

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

Air Temperature Sensor - Lower Left

Pin

Wire Color

Circuit No.

Function

A

BN

718

Low Reference

B

WH/BK

2339

Lower Left Air Temperature Sensor Signal

Air Temperature Sensor - Lower Right


Object Number: 82383  Size: CH

Connector Part Information

  • OEM: 12047662
  • Service: 12085535
  • Description: 2-Way F Metri-Pack 150 Series Unsealed (BK)

Terminal Part Information

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

Air Temperature Sensor - Lower Right

Pin

Wire Color

Circuit No.

Function

A

BN

718

Low Reference

B

GY/BK

2337

Lower Right Air Temperature Sensor Signal

Air Temperature Sensor - Upper Left


Object Number: 82383  Size: CH

Connector Part Information

  • OEM: 12047662
  • Service: 12085535
  • Description: 2-Way F Metri-Pack 150 Series Unsealed (BK)

Terminal Part Information

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

Air Temperature Sensor - Upper Left

Pin

Wire Color

Circuit No.

Function

A

BN

718

Low Reference

B

WH

2338

Upper Left Air Temperature Sensor Signal

Air Temperature Sensor - Upper Right


Object Number: 82383  Size: CH

Connector Part Information

  • OEM: 12047662
  • Service: 12085535
  • Description: 2-Way F Metri-Pack 150 Series Unsealed (BK)

Terminal Part Information

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

Air Temperature Sensor - Upper Right

Pin

Wire Color

Circuit No.

Function

A

BN

718

Low Reference

B

GY

2336

Upper Right Air Temperature Sensor Signal

Ambient Air Temperature Sensor


Object Number: 684793  Size: CH

Connector Part Information

  • OEM: 12052642
  • Service: 12101856
  • Description: 2-Way F 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

BN

718

Low Reference

Ambient Light/Sunload Sensor Assembly


Object Number: 130637  Size: CH

Connector Part Information

  • OEM: 12064760
  • Service: 12085208
  • Description: 4-Way F Metri-Pack 150 Series Unsealed (BK)

Terminal Part Information

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

Ambient Light/Sunload Sensor Assembly

Pin

Wire Color

Circuit No.

Function

A

L-BU/BK

2519

Left Sunload Sensor Signal

B

GY

2521

Right Sunload Sensor Signal

C

BK

279

Ambient Light Sensor Low Reference

D

WH

278

Ambient Light Sensor Signal

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 Control Module


Object Number: 68737  Size: CH

Connector Part Information

  • OEM: 12129489
  • Service: 12126486
  • Description: 3-Way F Metri-Pack 280 Series Unsealed (BK)

Terminal Part Information

  • Pins: A, C
  • Terminal/Tray: 15324340/19
  • Core/Insulation Crimp: F/G
  • Release Tool/Test Probe: 12094430/J-35616-4A (PU)
  • Pins: B
  • Terminal/Tray: 12110844/4
  • Core/Insulation Crimp: E/C
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)

Blower Motor Control Module

Pin

Wire Color

Circuit No.

Function

A

RD

542

Battery Positive Voltage

B

PU/WH

760

Blower Motor Speed Control

C

BK

2250

Ground

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, A12, B1-B9, B11-B12
  • Terminal/Tray: 12146447/3
  • Core/Insulation Crimp: E/C
  • 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-A11

--

--

Not Used

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: 684939  Size: CH

Connector Part Information

  • OEM: 15336594
  • Service: 15336594
  • Description: 12-Way F Micro-Pack 100 Series Unsealed (GY)

Terminal Part Information

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

HVAC Control Module C2

Pin

Wire Color

Circuit No.

Function

A

D-GN

734

Inside Air Temperature Sensor Signal

B

L-GN/BK

735

Ambient Air Temperature Sensor Signal

C

WH

2338

Upper Left Air Temperature Sensor Signal

D

GY

2336

Upper Right Air Temperature Sensor Signal

E

WH/BK

2339

Lower Left Air Temperature Sensor Signal

F

GY/BK

2337

Lower Right Air Temperature Sensor Signal

G

PU

1838

Recirculation Door Position Signal

H-J

--

--

Not Used

K

BN

718

Low Reference

L

WH/BK

1236

Inside Air Temperature Sensor Assembly Control

M

PU/WH

760

Blower Motor Speed Control

HVAC Control Module - Auxiliary


Object Number: 744295  Size: CH

Connector Part Information

  • OEM: 12084944
  • Service: 12084944
  • Description: 16-Way F Micro-Pack 100 Series Unsealed (BK)

Terminal Part Information

  • Pins: A1-A2, A4-A8, B1-B8
  • 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

A1

OG

4340

Battery Positive Voltage

A2

GY

2289

Rear HVAC/Audio Class 2 Serial Data

A3

--

--

Not Used

A4

BK

2250

Ground

A5

BN/WH

230

Instrument Panel Lamps Dimming Control

A6

WH

119

Auxiliary Mode Door Control

A7

D-GN

2347

Auxiliary Blower Motor High Speed Control

A8

D-BU

2348

Auxiliary Blower Motor Medium Speed Control

B1

BN

199

Left Rear Speaker Output (+) (w/o UQA)

BN

199

Left Rear Low Level Audio Signal (+) (w/UQA)

B2

D-BU

46

Right Rear Speaker Output (+) (w/o UQA)

D-BU

46

Right Rear Low Level Audio Signal (+) (w/UQA)

B3

BN

599

Left Rear Low Level Audio Signal (+)

B4

D-BU

546

Right Rear Low Level Audio Signal (+)

B5

YE

116

Left Rear Speaker Output (-) (w/o UQA)

YE

116

Rear Low Level Audio Signal (-) (w/UQA)

B6

L-BU

115

Right Rear Speaker Output (-) (w/o UQA)

L-BU

115

Right Rear Low Level Audio Signal (-) (w/UQA)

B7

D-GN/WH

1547

Left Rear Low Level Audio Signal (-)

B8

BK

1946

Right Rear Low Level Audio Signal (-)

Mode 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)

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

Rear Blower Motor


Object Number: 1467007  Size: CH

Connector Part Information

  • OEM: KET MG 610043
  • Service: Service by Harness - See Part Catalog
  • Description: 2-Way F 250 Series (WH)

Terminal Part Information

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

Rear Blower Motor

Pin

Wire Color

Circuit No.

Function

1

BK

--

Ground

2

RD

--

Auxiliary Blower Motor High Speed Control

RD

--

Auxiliary Blower Motor High Speed Control

Rear Blower Resistor


Object Number: 1467036  Size: CH

Connector Part Information

  • OEM: KET MG 610392
  • Service: Service by Harness - See Part Catalog
  • Description: 2-Way F SDL Series (WH)

Terminal Part Information

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

Rear Blower Resistor

Pin

Wire Color

Circuit No.

Function

1

RD

--

Auxiliary Blower Motor High Speed Control

2

L-BU

--

Auxiliary Blower Motor Medium Speed Control

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, 9-10
  • 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

YE

1791

Low Reference

8

--

--

Not Used

9

PU

1838

Recirculation Door Position Signal

10

L-BU/BK

1688

5-Volt Reference