GM Service Manual Online
For 1990-2009 cars
Table 1: Air Temperature Actuator
Table 2: Blower Motor C1
Table 3: Blower Motor C2
Table 4: Blower Motor Diode Module
Table 5: Blower Motor Resistor Assembly
Table 6: Blower Motor Switch
Table 7: HVAC Control Module
Table 8: Mode Actuator
Table 9: Recirculation Actuator

Air Temperature 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

YEL

1791

Air Temperature Door Control A

6

DK BLU

1199

Air Temperature Door Control B

7

--

--

Not Used

8

BLK

470

Low Reference

9

LT BLU

733

Air Temperature Door Position Signal

10

GRY

705

5 Volt Reference

Blower Motor C1


Object Number: 309374  Size: CH

Connector Part Information

    • 02977976
    • 1 Way F, 56 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

PPL

65

Blower Motor Supply Voltage

Blower Motor C2


Object Number: 35348  Size: CH

Connector Part Information

    • 12004267
    • 1 Way F, 56 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK

250

Ground

Blower Motor Diode Module


Object Number: 232125  Size: CH

Connector Part Information

    • 12059433
    • 4 Way Printed Circuit, Edgeboard (BLK)

Pin

Wire Color

Circuit No.

Function

A

--

--

Not Used

B

BRN

247

Blower Enable Relay Control

C

ORN

52

High-Blower Motor Control

D

YEL

60

Low-Blower Motor Control

Blower Motor Resistor Assembly


Object Number: 309380  Size: CH

Connector Part Information

    • 02965104
    • 3 Way F, 56 Series (NAT)

Pin

Wire Color

Circuit No.

Function

A

TAN

63

Medium 1 Blower Motor Control

B

PPL

65

Blower Motor Supply Voltage

C

LT BLU

188

Blower 1 Relay Output

Blower Motor Switch


Object Number: 232132  Size: CH

Connector Part Information

    • 12020813
    • 5 Way F Metri-Pack 630 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

--

--

Not Used

B

ORN

52

High-Blower Motor Control

C

YEL

60

Low-Blower Motor Control

D

BRN

247

Blower Enable Relay Control

E

BLK

250

Ground

HVAC Control Module


Object Number: 232153  Size: CH

Connector Part Information

    • 12004702
    • 24 Way F Printed Circuit Edgeboard (BLK)

Pin

Wire Color

Circuit No.

Function

1

--

--

Not Used

2

GRY

8

Instrument Panel Lamp Supply Voltage-1

3

DK BLU

1199

Air Temperature Door Control B

4

YEL

1318

Mode Door Control B

5-7

--

--

Not Used

8

BLK

250

Ground

9

--

--

Not Used

10

LT BLU

733

Air Temperature Door Position Signal

11

BLK

470

Low Reference

12

ORN

1040

Battery Positive Voltage

A

BRN

541

Ignition 3 Voltage

B-C

--

--

Not Used

D

YEL/BLK

1814

Mode Door Position Signal

E

GRY

705

5 Volt Reference

F

BRN

9

Park Lamp Supply Voltage

G

--

--

Not Used

H

BRN/WHT

1218

Mode Door Control A

J

YEL

1791

Air Temperature Door Control A

K

--

--

Not Used

L

ORN

52

High Blower Motor Control

M

BRN

247

Medium 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

YEL

1318

Mode Door Control

6

BRN/WHT

1218

Upper Mode Valve Motor Supply Voltage

7

--

--

Not Used

8

BLK

470

Low Reference

9

YEL/BLK

1814

Lower Mode Door Position Sensor Signal

10

GRY

705

5 Volt Reference

Recirculation 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

PNK/WHT

1648

Air Inlet Valve Motor Voltage Close

6

LT GRN/

BLK

1647

Air Inlet Valve Motor Voltage Open

7-10

--

--

Not Used