Chevrolet Impala Problem Report

Chevrolet Impala Check Engine Light Due to Gas Cap Issue

(57 reports)

Illumination of the Check Engine Light can be caused by a loose or worn gas cap.

I kept getting the check engine light and tighten gas cap. Paid dealership (almost $200 including labor) for a new gas cap. Now almost a year later getting same check engine light and tighten gas cap. This time they're saying I need to replace evap vent solenoid for $130. It seems like a lot of the issues with this car are the same. GM should step up and solve them. -
Engine light comes on, reads large emissions leak, replaced gas cap. -
3rd time in 7 months the check engine light came on and dealer keeps telling me the gas cap isn't on tight enough. i'm soooo sorry i bought this car! -
Same issue, worn gas cap allowing air in the tank and check engine light. Bought a new cap and fixed the issue. 50,000 miles later still no re-occurrence. -
Check engine light is on. It says check gas cap, However gas cap is tight. -
Same issue, same story, paid for the most expensive gas cap they could find! -
Replaced gas cap; still have problem. -
engine light came one whenever I got gas, replaced cap and it was fine for two years, now it has started again. -
had to buy a gas cap from chevy dealership because of tighten gas cap indication -
engine light on; replaced gascap...one of many issues with this car... -
My check engine light came on a few days after I had an oil change.I took it back to the shop to have it checked and the service man stated that my gas cap was loose/or needed replacing. I bought a new gas cap from local advanced auto store, he turned the engine light off, but stated that it would probably come on again. I had it rechecked at another auto service center, with similar results-gas cap needs to be tightened. I've been driving it about 3 months with the light on. -
Seem to go through a fuel cap every year and a half -
got message "tighten gas cap" & engine light came on. Replaced cap. No good. Cannot resolve -
check ingine light on -
Same problem -
Same issue. Gas cap light comes on. Replaced gas cap and was good for a couple of months. Now it's on again. -
The dash board instructs to tighten the gas cap. Then the check engine light comes on. -
Evaporative emission control system vent valve -
i just replaced gas cap and had codes reset and its okay now. -
Wakefield in Spartanburg,SC were we bought the car NEW,put us new gas cap. -
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