GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 1999 🢒 Montana Ext. 🢒 Body and Accessories 🢒 Wiring Systems 🢒 HVAC Connector End Views
Table 1: A/C Compressor Clutch Coil
Table 2: A/C Refrigerant Pressure Sensor
Table 3: Auxiliary Blower Motor
Table 4: Auxiliary Blower Motor Resistor
Table 5: Auxiliary Heater-A/C Control C1
Table 6: Auxiliary Heater-A/C Control C2
Table 7: Auxiliary Temperature Valve Actuator
Table 8: Blower Motor Resistor
Table 9: Electric Air Inlet Actuator
Table 10: Electric Slave Actuator
Table 11: Heater-A/C Control (C60) C1
Table 12: Heater-A/C Control (C60) C2
Table 13: Heater-A/C Control (C60) C3
Table 14: Vacuum Harness Connector

A/C Compressor Clutch Coil


Object Number: 280759 Size: CH

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

Pin

Wire Color

Circuit No.

Function

A

BLK

1050

Ground

B

DK GRN

59

A/C CLU relay output

A/C Refrigerant Pressure Sensor


Object Number: 258299 Size: CH

Connector Part Information
    • 12110192
    • 3-Way F Metri-Pack 150 Series Pull to Seat Sealed (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK

2751

A/C pressure return

B

GRY

2700

5 volt reference B

C

RED/BLK

380

A/C refrigerant pressure sensor signal

Auxiliary Blower Motor


Object Number: 62489 Size: CH

Connector Part Information
    • 12033769
    • 2-Way F Metri-Pack 630 Series Pull to Seat Sealed (BLK)

Pin

Wire Color

Circuit No.

Function

A

ORN

1052

Auxiliary blower motor output

B

BRN

641

Fused ignition 3 feed

Auxiliary Blower Motor Resistor


Object Number: 62450 Size: CH

Connector Part Information
    • 12052856
    • 4-Way F Metri-Pack 280 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

--

--

Not Used

B

ORN

1052

Auxiliary blower motor output

C

YEL

1176

Auxiliary blower resistor output-low

D

LT BLU

1072

Auxiliary blower resistor output-medium

Auxiliary Heater-A/C Control C1


Object Number: 40427 Size: CH

Connector Part Information
    • 12064978
    • 6-Way F Micro-Pack 100 Series (GRY)

Pin

Wire Color

Circuit No.

Function

1

BRN

641

Fused ignition 3 feed

2

GRY

8

Interior lamp dim signal

3

GRY

778

Auxiliary blower motor switch output

4

LT BLU

773

Transaxle range switch input C

5

BLK

955

Rear temperature input

6

BLK

850

Ground

Auxiliary Heater-A/C Control C2


Object Number: 62456 Size: CH

Connector Part Information
    • 12064752
    • 6-Way F Metri-Pack 280 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A-B

--

--

Not Used

C

BLK

1750

Ground

D

YEL

1176

Auxiliary blower resistor output-low

E

LT BLU

1072

Auxiliary blower resistor output-medium

F

ORN

1052

Auxiliary blower motor output

Auxiliary Temperature Valve 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

850

Ground

8

BLK

955

Rear temperature input

9

--

--

Not Used

10

BRN

641

Fused ignition 3 feed

Blower Motor Resistor


Object Number: 73146 Size: CH

Connector Part Information
    • 12052854
    • 7-Way F Metri-Pack 280 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

TAN

63

Blower switch output-medium 1

B

YEL

60

Blower switch output-low

C

PPL

73

Blower switch output-medium 3

D

LT BLU

72

Blower switch output-medium 2

E

BLK

150

Ground

F

ORN

52

Blower switch output-high

G

ORN

40

Fused battery feed

Electric Air Inlet Actuator


Object Number: 280764 Size: CH

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

Pin

Wire Color

Circuit No.

Function

5

BRN

241

Fused ignition 3 feed

6

LT BLU

684

Air inlet valve signal

7

BLK

150

Ground

8-10

--

--

Not Used

Electric Slave Actuator


Object Number: 280764 Size: CH

Connector Part Information
    • 12064993
    • 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

Temperature valve position signal

9

--

--

Not Used

10

BRN

241

Fused ignition 3 feed

Heater-A/C Control (C60) C1


Object Number: 62469 Size: CH

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

Pin

Wire Color

Circuit No.

Function

A

WHT

119

Heater-A/C ON/OFF signal

B

BRN

41

Fused ignition 3 feed

C

ORN

52

Blower switch output-high

D

--

--

Not Used

E

PPL

73

Blower switch output-medium 3

F

LT BLU

72

Blower switch output-medium 2

G

TAN

63

Blower switch output-medium 1

H

YEL

60

Blower switch output-low

Heater-A/C Control (C60) C2


Object Number: 73151 Size: CH

Connector Part Information
    • 12064799
    • 12-Way F Micro-Pack 100 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

WHT

119

Heater-A/C ON/OFF signal

B

DK GRN/WHT

762

A/C request signal

C

BRN

241

Fused ignition 3 feed

D

WHT

193

Rear defogger relay output-coil

E

ORN

640

Fused battery feed

F

PPL

361

Mode valve solenoid output-defrost

G

LT BLU

733

Temperature valve position signal

H

LT BLU/BLK

684

Air inlet valve signal

J

GRY

8

Interior lamp dim signal

K

BLK

150

Ground

L

WHT

454

Mode switch output

M

--

--

Not Used

Heater-A/C Control (C60) C3


Object Number: 362749 Size: CH

Connector Part Information
    • 12162512
    • 3-Way F Metri-Pack 480 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

PPL

361

Mode valve solenoid output-defrost

B

WHT

454

Mode switch output

C

--

--

Not Used

Vacuum Harness Connector


Object Number: 390274 Size: CH

Connector Part Information
    • 52477843
    • 6-Way Connector (BLK)

Pin

Wire Color

Circuit No.

Function

1

YEL

--

Defrost

2

RED

--

Heat

3

BRN

--

Heat/Defrost

4

--

--

Not Used

5

BLU

--

A/C

6

PPL

--

Source