GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2001 🢒 Chevy C Cab/Chassis HD (GMT 400) 🢒 HVAC 🢒 HVAC Systems - Manual 🢒 HVAC Connector End Views
Table 1: A/C Compressor Clutch
Table 2: A/C Low Pressure Switch - L18
Table 3: A/C Low Pressure Switch - L65
Table 4: A/C High Pressure Switch - L18
Table 5: A/C High Pressure Switch - L65
Table 6: A/C High Pressure Recirculation Switch - L18
Table 7: A/C Refrigerant Pressure Switch - L65
Table 8: Blower Motor
Table 9: High Speed Blower Motor Relay
Table 10: Blower Motor Resistor Assembly
Table 11: HVAC Control Assembly - C1
Table 12: HVAC Control Assembly Connector - C2
Table 13: Mode Actuator
Table 14: Recirculation Door Motor
Table 15: Temperature Door Motor

A/C Compressor Clutch


Object Number: 280759 Size: CH

Connector Part Information
    • 12162017
    • 2-Way F Metri-pack 150 Series (GRY)

Pin

Wire Color

Circuit No.

Function

A

BLK

150

Ground

B

DK GRN

59

Air Conditioning Compressor Clutch Supply Voltage

A/C Low Pressure Switch - L18


Object Number: 38562 Size: CH

Connector Part Information
    • 12162440
    • 2-Way F Metri-pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

DK GRN

603

A/C Low Pressure Switch Signal

B

BLK

150

Ground

A/C Low Pressure Switch - L65


Object Number: 38562 Size: CH

Connector Part Information
    • 12162440
    • 2-Way F Metri-pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

LT GRN

66

Air Conditioning Request Signal

B

DK GRN

603

A/C Low Pressure Switch Signal

A/C High Pressure Switch - L18


Object Number: 38560 Size: CH

Connector Part Information
    • 12162438
    • 2-Way F Metri-pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

DK GRN/WHT

762

Air Conditioning Request Signal

B

LT GRN

66

Air Conditioning Request Signal

A/C High Pressure Switch - L65


Object Number: 38560 Size: CH

Connector Part Information
    • 12162438
    • 2-Way F Metri-pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

DK GRN/WHT

762

Air Conditioning Request Signal

B

DK GRN

603

A/C High Pressure Switch Signal

A/C High Pressure Recirculation Switch - L18


Object Number: 35437 Size: CH

Connector Part Information
    • 12124037
    • 2-Way F Metri-pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

DK BLU

604

A/C High Pressure Recirculation Switch Signal

B

BLK

150

Ground

A/C Refrigerant Pressure Switch - L65


Object Number: 35437 Size: CH

Connector Part Information
    • 12124037
    • 2-Way F Metri-pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

DK GRN

1614

Recirculation Door Control

B

BLK

150

Ground

Blower Motor


Object Number: 62488 Size: CH

Connector Part Information
    • 12084957
    • 2-Way F 280 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

PPL

65

Blower Motor Supply Voltage

B

BLK

150

Ground

High Speed Blower Motor Relay


Object Number: 281201 Size: CH

Connector Part Information
    • 12110541
    • 6-Way F Metri-pack 280 Series Flexlock (BLK)

Pin

Wire Color

Circuit No.

Function

A1

BLK

150

Ground

A2

RED

542

Battery Positive Voltage

B1

--

--

Not Used

B2

DK BLU

101

Blower Motor Supply Voltage

C1

PPL

65

Blower Motor Supply Voltage

C2

ORN

52

Hign Blower Motor Control

Blower Motor Resistor Assembly


Object Number: 73208 Size: CH

Connector Part Information
    • 12064877
    • 4-Way F Metri-pack 480 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

YEL

60

Low Blower Motor Control

B

DK BLU

101

Blower Motor Supply Voltage

C

TAN

63

Medium 1 Blower Motor Control

D

LT BLU

72

Medium 2 Blower Motor Control

HVAC Control Assembly - C1


Object Number: 362756 Size: CH

Connector Part Information
    • 12191271
    • 10-Way P/C Bow Series (GRY)

Pin

Wire Color

Circuit No.

Function

1

GRY

8

Instrument Panel Lamp Supply Voltage 1

2

BLK

150

Ground

3

DK GRN

71

OFF Blower Control

4

DK GRN

1614

Recirculation Door Control

5

BRN

141

Ignition 3 Voltage

6-7

--

--

Not Used

8

LT BLU

733

Air Temperature Door Control

9

WHT

454

Mode Door Control

10

LT GRN

66

A/C Request Signal

HVAC Control Assembly Connector - C2


Object Number: 62469 Size: CH

Connector Part Information
    • 12064998
    • 8-Way F Metri-Pack 280 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

LT BLU

72

Medium 2 Blower Motor Control

B

TAN

63

Medium 1 Blower Motor Control

C

YEL

60

Low Blower Motor Control

D

DK GRN

71

OFF Blower Motor Control

E-F

--

--

Not Used

G

BRN

141

Ignition 3 Voltage

H

ORN

52

High Blower Motor Control

Mode Actuator


Object Number: 281207 Size: CH

Connector Part Information
    • 12040953
    • 6-Way F Micro-pack 100 Series (BLK)

Pin

Wire Color

Circuit No.

Function

5-6

--

--

Not Used

7

BLK

150

Ground

8

WHT

454

Mode Door Control

9

--

--

Not Used

10

BRN

141

Ignition 3 Voltage

Recirculation Door Motor


Object Number: 281207 Size: CH

Connector Part Information
    • 12040953
    • 6-Way F Micro-Pack 100 Series (BLK)

Pin

Wire Color

Circuit No.

Function

5

BRN

141

Ignition 3 Voltage

6

DK GRN

1614

Recirculation Door Control

7

BLK

150

Ground

8-10

--

--

Not Used

Temperature Door Motor


Object Number: 281207 Size: CH

Connector Part Information
    • 12040953
    • 6-Way F Micro-Pack 100 Series (BLK)

Pin

Wire Color

Circuit No.

Function

5-6

--

--

Not Used

7

BLK

150

Ground

8

LT BLU

733

Air Temperature Door Control

9

--

--

Not Used

10

BRN

141

Ignition 3 Voltage