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Automatic Level Control (ALC) Compressor

WARNING: This page is about a different car, the 2008 Buick Lucerne. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Automatic Level Control (ALC) Compressor Connector End View
GM684908Courtesy of GENERAL MOTORS CORP.
Automatic Level Control (ALC) Compressor

Pin Wire Circuit Function
A 0.35 WH 320 Automatic Level Control Exhaust Solenoid Control
B 3 D-GN 322 Automatic Level Control Compressor Motor Supply Voltage
C 0.5 RD/WH 3340 Battery Positive Voltage
D 3 BK 1050 Ground
Connector Part Information 
  • OEM: 13521459
  • Service: 15306360
  • Description: 4-Way F GT 280 Series Sealed 5.8 (BK)
Terminal Part Information 
  • Terminal/Tray: 15304719/19
  • Core/Insulation Crimp: E/5
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
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