GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2000 🢒 Express 🢒 HVAC 🢒 HVAC Systems - Manual 🢒 HVAC Connector End Views
Table 1: A/C Compressor Clutch
Table 2: A/C Compressor High Pressure Cutoff Switch
Table 3: A/C Compressor Low Pressure Cutoff Switch
Table 4: Auxiliary Blower Motor Connector
Table 5: Auxiliary Blower Motor Relay, Low/Medium/High Connectors
Table 6: Auxiliary Blower Motor Resistor Connector
Table 7: Auxiliary Blower Motor Switch Connector
Table 8: Blower Motor Resistor/Relay Connector
Table 9: Front Auxiliary Controller
Table 10: Front Blower Motor Connector
Table 11: Heater and A/C Controller C1 Connector
Table 12: Heater and A/C Controller C2 Connector
Table 13: Heater and A/C Controller C3 Connector
Table 14: Rear Auxiliary HVAC Controller
Table 15: Rear Auxiliary Mode Valve and Seal Assembly (Mode Door Motor)
Table 16: Rear Auxiliary Temperature Valve Assembly (Temperature Door Motor)

A/C Compressor Clutch


Object Number: 280759 Size: CH

Connector Part Information
    • 12162017
    • 2F M/P 150 Series (GRA)

Pin

Wire Color

Circuit No.

Function

A

BLK

150

Ground

B

LT GRN

59

A/C Compressor Clutch Supply Voltage

A/C Compressor High Pressure Cutoff Switch


Object Number: 366093 Size: CH

Connector Part Information
    • 15317968
    • 2F Mic/P 100 W (BLK)

Pin

Wire Color

Circuit No.

Function

A

DK GRN/WHT

2523

A/C Request Signal

B

LT GRN

66

A/C Switch - Output

A/C Compressor Low Pressure Cutoff Switch


Object Number: 366093 Size: CH

Connector Part Information
    • 15317968
    • 2F Mic/P 100 W (BLK

Pin

Wire Color

Circuit No.

Function

A

DK GRN/WHT

2523

A/C Request Signal

B

LT GRN

66

A/C Switch - Output

Auxiliary Blower Motor Connector


Object Number: 258847 Size: CH

Connector Part Information
    • 12077900
    • 2F M/P 280 SLD (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK

150

Ground

B

YEL

1172

Auxiliary Blower Motor Feed

Auxiliary Blower Motor Relay, Low/Medium/High Connectors


Object Number: 309518 Size: CH

Connector Part Information
    • 12129715
    • 6F M/P 280 FLXLK (MD GRY)

Pin

Wire Color

Circuit No.

Function

A1

WHT

1924

Auxiliary HVAC Switch Output (High)

A1

RED

1925

Auxiliary HVAC Switch Output (Medium)

A1

DK BLU

1926

Auxiliary HVAC Switch Output (Low)

A2

YEL

1172

Auxiliary Blower Motor Feed (High)

A2

LT BLU

1072

Auxiliary Blower Motor Feed (Medium)

A2

YEL

1176

Auxiliary Blower Motor Feed (Low)

B1-B2

--

--

Not Used

C1

RED

1542

Fuse Output - Battery - Type II Fuse

C2

BRN

341

Fuse Output - IGN 3 - Type III Fuse

Auxiliary Blower Motor Resistor Connector


Object Number: 73229 Size: CH

Connector Part Information
    • 12129566
    • 4F M/P 280 SLD (MD GRY)

Pin

Wire Color

Circuit No.

Function

A

YEL

1176

Auxiliary Blower Motor Resistor Output (Low)

B

--

--

Not Used

C

LT BLU

1072

Auxiliary Blower Motor Resistor Output (Medium)

D

YEL

1172

Auxiliary Blower Motor Feed

Auxiliary Blower Motor Switch Connector


Object Number: 62456 Size: CH

Connector Part Information
    • 12064752
    • 6F M/P 280 (BLK)

Pin

Wire Color

Circuit No.

Function

A

GRY

8

Instrument Panel Lamp Feed

B

BLK

150

Ground

C

--

--

Not Used

D

ORN

52

Blower Switch Output (High)

E

YEL

60

Blower Switch Output (Low)

F

TAN

63

Blower Switch Output (Medium 1)

Blower Motor Resistor/Relay Connector


Object Number: 68778 Size: CH

Connector Part Information
    • 12160746
    • ASM 6F M/P 280 FLXLK SLD (LT GRY)

Pin

Wire Color

Circuit No.

Function

A

RED

542

Fuse Output Battery - Type II Fuse

B

ORN

52

Blower Switch Output (High)

C

BLK

150

Ground

D

TAN

63

Blower Switch Output (Medium 1)

E

YEL

60

Blower Switch Output (Low)

F

LT BLU

72

Blower Switch Output (Medium 2)

Front Auxiliary Controller


Object Number: 62464 Size: CH

Connector Part Information
    • 12064769
    • 10M M/P 150 (NAT)

Pin

Wire Color

Circuit No.

Function

A

GRA

8

Instrument Panel Lamp - Feed - 1

B

BLK

150

Ground

C

YEL

60

Blower Switch - Output - Low

D

ORN

52

Blower Switch - Output - High

E

TAN

63

Blower Switch - Output - Medium 1

F

LT BLU

203

A/C Refrigerant High Pressure Cut-Out Switch - Feed

G

BRN

341

Run - Ignition3 - Fuse - Type III

H

DK GRN

734

Inside Temperature Sensor - Signal

J

LT BLU

733

Air Temperature Valve Position Sensor - Signal

K

--

--

Open

Front Blower Motor Connector


Object Number: 535914 Size: CH

Connector Part Information
    • 12160746
    • 6F 280 Series SLD (LT GRA)

Pin

Wire Color

Circuit No.

Function

A

RED

542

Battery Positive Voltage

B

ORN

52

High [position X] Blower [Motor] Control

C

BLK

150

Ground

D

TAN

63

Medium 1 [position X] Blower Motor Control

E

YEL

60

Low [position X] Blower Motor Control

F

LT BLU

72

Medium 2 [position X] Blower Motor Control

Heater and A/C Controller C1 Connector


Object Number: 68737 Size: CH

Connector Part Information
    • 12129489
    • 3F M/P 280 TL FLXLK (BLK)

Pin

Wire Color

Circuit No.

Function

A

WHT

119

Mode Switch Output

B

BLK

150

Ground

C

GRY

8

Instrument Panel Lamp Feed

Heater and A/C Controller C2 Connector


Object Number: 62469 Size: CH

Connector Part Information
    • 12064998
    • 8F M/P 280 CLIP SLOT (BLK)

Pin

Wire Color

Circuit No.

Function

A

YEL

60

Blower Switch Output (Low)

B

TAN

63

Blower Switch Output (Medium 1)

C

LT BLU

72

Blower Switch Output (Medium 2)

D

ORN

52

Blower Switch Output (High)

E

BRN

141

Fuse Output - IGN 3 - Type III Fuse

F

LT BLU

733

AIR Temperature Valve Position Sensor Signal

G

WHT

119

Mode Switch Output

H

LT GRN

66

AIR Conditioning Switch Output

Heater and A/C Controller C3 Connector


Object Number: 62450 Size: CH

Connector Part Information
    • 12052856
    • 4F M/P 280 (BLK)

Pin

Wire Color

Circuit No.

Function

A

ORN

1440

Fuse Output - Battery - Type III Fuse

B

BRN

141

Fuse Output - IGN 3 - Type III Fuse

C

BLK

150

Ground

D

ORN

267

Heated Mirror Element Feed

Rear Auxiliary HVAC Controller


Object Number: 283791 Size: CH

Connector Part Information
    • 12064871
    • 10F M/P 150 (BLU)

Pin

Wire Color

Circuit No.

Function

A

GRA

8

Instrument Panel Lamp - Feed - 1

B

BLK

150

Ground

C

YEL

60

Blower Switch - Output - Low

D

ORN

52

Blower Switch - Output - High

E

TAN

63

Blower Switch - Output - Medium 1

F

DK BLU

77

Heater and A/C Control Logic Module - Signal

G

BRN

341

Run - Ignition3 - Fuse - Type lll

H

DK GRN

734

Inside Temperature Sensor - Signal

J

LT BLU

733

Air Temperature Valve Postion Sensor - Signal

K

--

--

Open

Rear Auxiliary Mode Valve and Seal Assembly (Mode Door Motor)


Object Number: 281207 Size: CH

Connector Part Information
    • 12040953
    • 6F Mic/P 100 (BLK)

Pin

Wire Color

Circuit No.

Function

5

--

--

Not Used

6

--

--

Not Used

7

BLK

150

Ground

8

LT BLU

773

Air Temperature Valve Position Sensor - Signal

9

--

--

Not Used

10

BRN

341

Run - Ignition3 - Fuse - Type III

Rear Auxiliary Temperature Valve Assembly (Temperature Door Motor)


Object Number: 281207 Size: CH

Connector Part Information
    • 12040953
    • 6F Mic/P 100 (BLK)

Pin

Wire Color

Circuit No.

Function

5

--

--

Not Used

6

--

--

Not Used

7

BLK

150

Ground

8

DK GRN

734

Inside Temperature Sensor - Signal

9

--

--

Not Used

10

341

BRN

Run - Ignition3 - Fuse - Type III