GM Service Manual Online
For 1990-2009 cars only
Connector 1: Automatic Level Control (ALC) Air Compressor Assembly
Connector 2: Automatic Level Control (ALC) Relay

Automatic Level Control (ALC) Air Compressor Assembly


Object Number: 646372  Size: CH

Connector Part Information

  • OEM: 15326654
  • Service: 88986254
  • Description: 8-Way F Metri-Pack 280 Series, Sealed (BK)

Terminal Part Information

  • Terminal/Tray: See Terminal Repair Kit
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: See Terminal Repair Kit

Automatic Level Control (ALC) Air Compressor Assembly

Pin

Wire Color

Circuit No.

Function

A

TN

6075

Automatic Level Control Pressure Sensor Signal

B

RD/WH

2440

Battery Positive Voltage

C

WH

320

Automatic Level Control Exhaust Solenoid Control

D

--

--

Not Used

E

L-BU

2248

Automatic Level Control Air Compressor Supply Voltage

F

BN

6077

Low Reference

G

BK

1750

Ground

H

GY

6076

5-Volt Reference

Automatic Level Control (ALC) Relay


Object Number: 535912  Size: CH

Connector Part Information

  • OEM: 12129716
  • Service: 15306045
  • Description: 4-Way F Metri-Pack 280 Series, Flexlock (GY)

Terminal Part Information

  • Pins: 30, 87
  • Terminal/Tray: 12110853/4
  • Core/Insulation Crimp: F/5
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
  • Pins: 85, 86
  • Terminal/Tray: 12110847/4
  • Core/Insulation Crimp: C/5
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)

Automatic Level Control (ALC) Relay

Pin

Wire Color

Circuit No.

Function

30

RD

1842

Battery Positive Voltage

85

PK

739

Ignition 1 Voltage

86

L-BU/WH

1112

Damping Relay Coil Control

87

L-BU

2248

Automatic Level Control Compressor Relay Control