GM Service Manual Online
For 1990-2009 cars only
Table 1: Ambient Air Temperature Sensor
Table 2: HVAC Control Assembly C2 Connector
Table 3: Inside Rearview Mirror
Table 4: Rear Window Defogger Relay

Ambient Air Temperature Sensor


Object Number: 684793  Size: CH

Connector Part Information

    • 12052642
    • 2 Way F Metri-Pack 150 Series (LT GRN)

Pin

Wire Color

Circuit No.

Function

A

DK GRN/

WHT

636

Ambient Air Temperature Sensor Signal

B

BLK/WHT

1704

Low Reference

HVAC Control Assembly C2 Connector


Object Number: 62450  Size: CH

Connector Part Information

    • 12052856
    • 4F M/P 280 (BLK)

Pin

Wire Color

Circuit No.

Function

A

ORN

1440

Battery Positive Voltage

B

BRN

141

Ignition 3 Voltage

C

BLK

150

Ground

D

ORN

267

Heated Mirror/Rear Defog Relay Coil Supply Voltage

Inside Rearview Mirror


Object Number: 153632  Size: CH

Connector Part Information

    • 12124782
    • 7-Way F Packard P2S (BLK)

Pin

Wire Color

Circuit No.

Function

1

PNK

39

Ignition 1 Voltage

2

BLK

150

Ground

3

LT GRN

24

Backup Lamp Supply Voltage

4-5

--

--

Not Used

6

DK GRN/WHT

636

Ambient Air Temperature Sensor Signal

7

BLK/WHT

1704

Low Reference

Rear Window Defogger Relay


Object Number: 309518  Size: CH

Connector Part Information

    • 12129715
    • CONN 6F M/P 280 FLXLK (MD GRY)

Pin

Wire Color

Circuit No.

Function

A1

ORN

267

Heated Mirror Element Feed

A2

PPL

293

Rear Defog Element Supply Voltage

B1-B2

--

--

Not Used

C1

ORN

1540

Battery Positive Voltage

C2

BLK

150

Ground