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Home >> GMC >> 2001 >> C3500 HD 8.1 G, Standard >> Repair and Diagnosis >> Suspension >> Electronic Suspension >> Electronic Suspension - Suspension Damping & Automatic Level Control >> Diagnostic Information and Procedures >> DTC C0655 >> Circuit Description

Circuit Description

The vehicle's rear leveling compressor motor is switched on and off via a compressor motor relay which is controlled by the suspension control module. The control module provides a switched path to ground whenever compressor activity is required. The control module continually monitors the compressor motor relay circuitry to determine if the voltage level agrees with the commanded state.

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