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HOMESERVICE MANUALSCHEVROLET2008CHEVY EXPRESS G3500, VAN PASSENGER EXTENDEDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 67 (SUSPENSION CONTROL SYSTEM - SUSPENSION LEVELING)DESCRIPTION AND OPERATIONAUTOMATIC LEVEL CONTROL DESCRIPTION AND OPERATIONAUTOMATIC LEVEL CONTROL (ALC) SYSTEM OPERATIONSELF PRESSURE TEST
2008 Chevrolet Chevy Express G3500, Van Passenger Extended

Self Pressure Test

2008 Chevrolet Chevy Express G3500, Van Passenger ExtendedSECTION Self Pressure Test
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2007 GMC Yukon XL, 2007 GMC Yukon, 2007 Chevrolet Tahoe, 2007 Chevrolet Suburban, and 2007 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

Each time the ignition is turned ON the ESCM commands on the ALC relay, activating the compressor for 4 seconds. The ESCM then monitors the air pressure sensor's signal voltage to verify the compressor is functioning and the system is holding air pressure.

RENDER: 1.0x

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