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What does the service engine light mean on 2002 Chevrolet avalanche?
Wiki User
∙ 15y ago
Typically means the computer detected a malfunction with the emissions system. They can also be produced by bad gas, by not properly securing the gas cap, and low battery conditions. If the light is flashing and the engine is misfiring, take your vehicle for service immediately. Otherwise, if you recently got gas, check the cap, or wait for the next tank to see if the issue is resolved. If you noticed the light after a low battery condition or after a jump-start, then drive the car normally for a few days to see if the condition clears up. If after a few days of driving the light does not clear up, take your vehicle in for a more thorough diagnostic check.
Wiki User
∙ 15y ago
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