Chevrolet Trouble Codes and Known Issues

Chevrolet (General Motors) is one of the makes with the most vehicles on the road across the Americas, from small cars such as the Spark, Aveo, Sonic and Cruze to the Silverado, Tahoe and Suburban. GM uses its own C and B codes for ABS and body systems, and many of the generic definitions in scan tools come from its manuals.

Most searched models: Silverado, Tahoe, Suburban, Equinox, Malibu, Cruze, Trax, Colorado, Spark, Aveo and Onix.

Common problems on Chevrolet vehicles

• Ignition coil and spark plug wires on the Aveo 1.6.
• PCV valve built into the valve cover and leaking thermostat housing on the Cruze 1.4 turbo and 1.8.
• Wheel speed sensors and ABS module on the Silverado, Tahoe and Trailblazer.
• Canister vent solenoid on trucks.

Tips for diagnosing a Chevrolet

• On the Aveo 1.6, replace the timing belt at the specified interval: if it breaks, it damages the valves.
• If your Cruze loses coolant with no visible leak, check the thermostat housing and the expansion tank.

Do you have several codes at once? Use the free multi-code diagnosis for Chevrolet: it sorts the codes by priority and shows these make-specific notes. Below are the codes with documented quirks on Chevrolet vehicles.

Make notes are a guide based on well-known common failures. Always confirm with the manufacturer's documentation for your engine and model year.