GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2005 🢒 GMC C Sierra - 2WD 🢒 Transmission/Transaxle 🢒 Automatic Transmission - 4L60-E/4L65-E 🢒 HVAC Connector End Views
Table 1: A/C Compressor Clutch
Table 2: A/C Low Pressure Switch
Table 3: A/C Refrigerant Pressure Sensor
Table 4: Air Temperature Actuator - Left
Table 5: Air Temperature Actuator - Right
Table 6: Air Temperature Sensor - Lower Left
Table 7: Air Temperature Sensor - Lower Right
Table 8: Air Temperature Sensor - Upper Left
Table 9: Air Temperature Sensor - Upper Right
Table 10: Air Temperature Sensor Assembly - Inside
Table 11: Ambient Air Temperature Sensor
Table 12: Ambient Light/Sunload Sensor Assembly
Table 13: Blower Motor
Table 14: Blower Motor Control Processor
Table 15: HVAC Control Module - C1
Table 16: HVAC Control Module - C2
Table 17: Mode Actuator
Table 18: Recirculation Actuator

A/C Compressor Clutch


Object Number: 684852 Size: CH

Connector Part Information
    • 12162017
    • 2-Way F Metri-Pack 150 Series (GY)

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
    • 12052644
    • 2-Way F Metri-Pack 150 Series (L-GY)

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
    • 15344137
    • 3-Way F GT 150 Series Sealed (BK)

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: 280764 Size: CH

Connector Part Information
    • 12064993
    • 6-Way F Micro-Pack 100 Series (BK)

Pin

Wire Color

Circuit No.

Function

5

BN

341

Ignition 3 Voltage

6

D-BU

1199

Auxiliary 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: 280764 Size: CH

Connector Part Information
    • 12064993
    • 6-Way F Micro-Pack 100 Series (BK)

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 - Lower Left


Object Number: 82383 Size: CH

Connector Part Information
    • 12047662
    • 2-Way F Metri-Pack 150 Series (BK)

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
    • 12047662
    • 2-Way F Metri-Pack 150 Series (BK)

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
    • 12047662
    • 2-Way F Metri-Pack 150 Series (BK)

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
    • 12047662
    • 2-Way F Metri-Pack 150 Series (BK)

Pin

Wire Color

Circuit No.

Function

A

BN

718

Low Reference

B

GY

2336

Upper Right Air Temperature Sensor Signal

Air Temperature Sensor Assembly - Inside


Object Number: 130635 Size: CH

Connector Part Information
    • 12045813
    • 4-Way F Metri-Pack 150 Series (NA)

Pin

Wire Color

Circuit No.

Function

A

D-GN

734

Inside Air Temperature Sensor Signal

B

WH/BK

5515

Inside Air Temperature Sensor Assembly Control

C

BK

1050

Ground

D

BN

718

Low Reference

Ambient Air Temperature Sensor


Object Number: 635009 Size: CH

Connector Part Information
    • 12052641
    • 2-Way F Metri-Pack 150 Series (BK)

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
    • 12064760
    • 4-Way F Metri-Pack 150 Series (BK)

Pin

Wire Color

Circuit No.

Function

A

L-BU/BK

590

Driver Sunload Sensor Signal

B

GY

1548

Passenger Sunload Sensor Signal

C

BK

279

Ambient Light Sensor Low Reference

D

WH

278

Ambient Light Sensor Signal

Blower Motor


Object Number: 35456 Size: CH

Connector Part Information
    • 12064749
    • 2-Way F Metri-Pack 280 Series (BK)

Pin

Wire Color

Circuit No.

Function

A

PU

--

Blower Motor Supply Voltage

B

BK

--

Ground

Blower Motor Control Processor


Object Number: 68737 Size: CH

Connector Part Information
    • 12129489
    • 3-Way F Metri-Pack 280 Series (BK)

Pin

Wire Color

Circuit No.

Function

A

RD

542

Battery Positive Voltage

B

PU/WH

760

Blower Motor Speed Control

C

BK

1050

Ground

HVAC Control Module - C1


Object Number: 130690 Size: CH

Connector Part Information
    • 12110206
    • 24-Way F Micro-Pack 100 Series (L-BU)

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/WH

1851

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

--

--

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: 684939 Size: CH

Connector Part Information
    • 15336594
    • 12-Way F Micro-Pack 100 Series (GY)

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

5515

Inside Air Temperature Sensor Assembly Control

M

PU/WH

760

Blower Motor Speed Control

Mode Actuator


Object Number: 280764 Size: CH

Connector Part Information
    • 12064993
    • 6-Way F Micro-Pack 100 Series (BK)

Pin

Wire Color

Circuit No.

Function

5

BN

341

Ignition 3 Voltage

6

TN

2273

Mode Door Control

7

YE

1791

Ground

8

--

--

Not Used

9

L-GN

2275

Mode Door Position Signal

10

L-BU/BK

1688

5-Volt Reference

Recirculation Actuator


Object Number: 280764 Size: CH

Connector Part Information
    • 12064993
    • 6-Way F Micro-Pack 100 Series (BK)

Pin

Wire Color

Circuit No.

Function

5

BN

341

Ignition 3 Voltage

6

D-GN

1614

Recirculation Door Control

7

YE

1791

Ground

8

--

--

Not Used

9

PU

1838

Recirculation Door Position Signal

10

L-BU/BK

1688

5-Volt Reference