GM Service Manual Online
For 1990-2009 cars only
Table 1: Automatic Level Control (ALC) Compressor
Table 2: Automatic Level Control (ALC) Sensor

Automatic Level Control (ALC) Compressor


Object Number: 280763  Size: CH

Connector Part Information

    • 12015788
    • 4-Way F Weather Pack (BLK)

Pin

Wire Color

Circuit No.

Function

A

ORN

340

Battery Positive Voltage

B

DK GRN

322

Automatic Level Control Compressor Motor Control

C

WHT

320

Automatic Level Control Exhaust Solenoid Control

D

BLK

650

Ground

Automatic Level Control (ALC) Sensor


Object Number: 62449  Size: CH

Connector Part Information

    • 12052846
    • 6-Way F Metri-Pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK

550

Ground

B

YEL

321

ELC Relay Control

C

ORN

340

Battery Positive Voltage

D

BRN

41

Ignition 3 Voltage

E

WHT

320

Automatic Level Control Exhaust Solenoid Control

F

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Test Output