GM Service Manual Online
For 1990-2009 cars only
Connector 1: A/C Compressor Clutch
Connector 2: A/C Low Pressure Switch
Connector 3: A/C Refrigerant Pressure Sensor
Connector 4: Air Temperature Actuator - Auxiliary
Connector 5: Air Temperature Actuator - Left
Connector 6: Air Temperature Actuator - Right
Connector 7: Blower Motor
Connector 8: Blower Motor - Auxiliary, Long Wheelbase
Connector 9: Blower Motor - Auxiliary, Short Wheelbase
Connector 10: Blower Motor Resistor Assembly
Connector 11: Blower Motor Resistor Assembly - Auxiliary - C1
Connector 12: Blower Motor Resistor Assembly - Auxiliary - C2
Connector 13: HVAC Control Assembly - Front Auxiliary
Connector 14: HVAC Control Module - C1
Connector 15: HVAC Control Module - C2
Connector 16: Mode Actuator
Connector 17: Mode Actuator - Auxiliary
Connector 18: Recirculation Actuator

A/C Compressor Clutch


Object Number: 684852  Size: CH

Connector Part Information

  • OEM: 12162017
  • Service: 12101937
  • Description: 2-Way F Metri-Pack 150 Series (GY)

Terminal Part Information

  • Terminal/Tray: 12048074/2
  • Core/Insulation Crimp: E/1
  • Release Tool/Test Probe:12094429/J-35616-14 (GN)

A/C Compressor Clutch

Pin

Wire Color

Circuit No.

Function

A

BK

550

Ground

B

D-GN

59

A/C Compressor Clutch Supply Voltage

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 (GY)

Terminal Part Information

  • Terminal/Tray: 15326267/19
  • Core/Insulation Crimp: E/4
  • Release Tool/Test Probe: 15315247/J-35616-14 (GN)

A/C Low Pressure Switch

Pin

Wire Color

Circuit No.

Function

A

D-BU

204

A/C Low Pressure Sensor Signal

B

BK

550

Ground

A/C Refrigerant Pressure Sensor


Object Number: 726824  Size: CH

Connector Part Information

  • OEM: 15344137
  • Service: 88988301
  • 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 - Auxiliary


Object Number: 280764  Size: CH

Connector Part Information

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

Terminal Part Information

  • Pins: 7, 8, 10
  • Terminal/Tray: 12146447/3
  • Core/Insulation Crimp: E/C
  • Release Tool/Test Probe: 12031876-1/J-35616-6 (BN)

Air Temperature Actuator - Auxiliary

Pin

Wire Color

Circuit No.

Function

5-6

--

--

Not Used

7

BK

1450

Ground

8

WH/BK

1236

Auxiliary Air Temperature Door Control

9

--

--

Not Used

10

BN

541

Ignition 3 Voltage

Air Temperature Actuator - Left


Object Number: 280764  Size: CH

Connector Part Information

  • OEM: 12064993
  • Service: 12102485
  • 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)

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

Ground

8

--

--

Not Used

9

L-BU

733

Air Temperature Door Position Signal

10

L-BU/BK

1688

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

  • 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

Ground

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: 62488  Size: CH

Connector Part Information

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

Terminal Part Information

  • Terminal/Tray: 15324340/19
  • Core/Insulation Crimp: F/G
  • Release Tool/Test Probe: 12094430/J-35616-4A (PU)

Blower Motor_1614034

Pin

Wire Color

Circuit No.

Function

A

RD

65

Blower Motor Supply Voltage

B

BK

1050

Ground

Blower Motor - Auxiliary, Long Wheelbase


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: 15324340/19
  • Core/Insulation Crimp: F/G
  • Release Tool/Test Probe: 12094430/J-35616-4A (PU)

Blower Motor - Auxiliary, Long Wheelbase

Pin

Wire Color

Circuit No.

Function

A

PU

65

Blower Motor Supply Voltage

B

BK

1050

Ground

Blower Motor - Auxiliary, Short Wheelbase


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: 15324340/19
  • Core/Insulation Crimp: F/G
  • Release Tool/Test Probe: 12094430/J-35616-4A (PU)

Blower Motor - Auxiliary, Short Wheelbase

Pin

Wire Color

Circuit No.

Function

A

RD

65

Blower Motor Supply Voltage

B

BK

1050

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

Blower Motor Low Control

C

PU

73

Medium 3 Blower Motor Control

D

L-BU

72

Medium 2 Blower Motor Control

E

BK

1050

Ground

F

OG

52

Blower Motor High Control

G

RD

542

Battery Positive Voltage

Blower Motor Resistor Assembly - Auxiliary - C1


Object Number: 68737  Size: CH

Connector Part Information

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

Terminal Part Information

  • Terminal/Tray: 12110844/4
  • Core/Insulation Crimp: E/C
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)

Blower Motor Resistor Assembly - Auxiliary - C1

Pin

Wire Color

Circuit No.

Function

A

D-BU

1926

Auxiliary Blower Motor Low Control

B

RD

1925

Auxiliary Blower Motor Medium Control

C

WH

1924

Auxiliary Blower Motor High Control

Blower Motor Resistor Assembly - Auxiliary - C2


Object Number: 62450  Size: CH

Connector Part Information

  • OEM: 12052856
  • Service: 12125636
  • Description: 4-Way F Metri-Pack 280 Series (BK)

Terminal Part Information

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

Blower Motor Resistor Assembly - Auxiliary - C2

Pin

Wire Color

Circuit No.

Function

A

BK

1450

Ground

B

OG

1740

Battery Positive Voltage

C

BN

541

Ignition 3 Voltage

BN

541

Ignition 3 Voltage (Long wheelbase only)

D

BN

541

Ignition 3 Voltage

HVAC Control Assembly - Front Auxiliary


Object Number: 73152  Size: CH

Connector Part Information

  • OEM: 12092629
  • Service: Not Serviced
  • Description: 16-Way F Micro-Pack 100 Series (BU)

Terminal Part Information

  • Pins: A1- A3, A5-A8, B3, B4, B8
  • Terminal/Tray: 12146447/3
  • Core/Insulation Crimp: E/C
  • Release Tool/Test Probe: 12031876-1/J-35616-6 (BN)

HVAC Control Assembly - Front Auxiliary

Pin

Wire Color

Circuit No.

Function

A1

BN/WH

230

Instrument Panel Lamps Dimming Control

A2

BN

541

Ignition 3 Voltage

A3

WH

454

Auxiliary Mode Door Control

A4

--

--

Not Used

A5

WH

1924

Auxiliary Blower Motor High Control

A6

RD

1925

Auxiliary Blower Motor Medium Control

A7

D-BU

1926

Auxiliary Blower Motor Low Control

A8

BK

1450

Ground

B1-B2

--

--

Not Used

B3

WH/BK

1236

Auxiliary Air Temperature Door Control

B4

GY

1450

Auxiliary Blower Motor Speed Control

B5-B7

--

--

Not Used

B8

BK

1450

Ground

HVAC Control Module - C1


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

  • Pins: A1-A3, A5, A7, A12, B1, B2, B4- B9, B11
  • Terminal/Tray: 12146447/3
  • Core/Insulation Crimp: E/C
  • Release Tool/Test Probe: 12031876-1/J-35616-6 (BN)
  • Pins: A8, 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

--

--

Not Used

A5

L-GN

2275

Mode Door Position Signal

A6

--

--

Not Used

A7

BN/WH

230

Instrument Panel Lamps Dimming Control

A8

BK

1851

Ground

A9-A10

--

--

Not Used

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

--

--

Not Used

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

1050

Ground

B10

--

--

Not Used

B11

WH

1038

HVAC Class 2 Serial Data

B12

--

--

Not Used

HVAC Control Module - C2


Object Number: 556473  Size: CH

Connector Part Information

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

Terminal Part Information

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

Blower Motor Medium 1 Control

D

YE

60

Blower Motor Low Control

E

--

--

Not Used

F

OG

52

Blower Motor High Control

G

BN

141

Ignition 3 Voltage

H

D-GN

71

OFF 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

  • 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

Mode Actuator - Auxiliary


Object Number: 280764  Size: CH

Connector Part Information

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

Terminal Part Information

  • Pins: 7, 8, 10
  • Terminal/Tray: 12146447/3
  • Core/Insulation Crimp: E/C
  • Release Tool/Test Probe: 12031876-1/J-35616-6 (BN)

Mode Actuator - Auxiliary

Pin

Wire Color

Circuit No.

Function

5-6

--

--

Not Used

7

BK

1450

Ground

8

WH

454

Auxiliary Mode Door Control

9

--

--

Not Used

10

BN

541

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

  • 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

1050

Ground

8-10

--

--

Not Used