Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2002AVALANCHE 2500, RWDREPAIR AND DIAGNOSISSUSPENSIONELECTRONIC SUSPENSION SYSTEM - AUTOMATIC LEVEL CONTROL
2002 Chevrolet Avalanche 2500, RWD
Electronic Suspension System - Automatic Level Control
2002 Chevrolet Avalanche 2500, RWDSECTION Electronic Suspension System - Automatic Level Control
- Specifications
- Schematic and Routing Diagrams
- Component Locator
- Diagnostic Information and Procedures
- Diagnostic Starting Point - Automatic Level Control
- Diagnostic System Check - Automatic Level Control
- Scan Tool Output Controls
- Scan Tool Data List
- Scan Tool Data Definitions
- Diagnostic Trouble Code (DTC) List
- DTC C0655
- DTC C0660
- DTC C0711
- Symptoms - Automatic Level Control
- Automatic Level Control Compressor Motor Always On
- Automatic Level Control Compressor Motor Inoperative
- Repair Instructions
- Description and Operation
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.