Chevrolet Impala Problem Report
Chevrolet Impala Check Engine Light Due to Gas Cap Issue
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. - april1105
Engine light comes on, reads large emissions leak, replaced gas cap. - 1978reynolds
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! - Visitor
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. - Visitor
Check engine light is on. It says check gas cap, However gas cap is tight. - Visitor
Same issue, same story, paid for the most expensive gas cap they could find! - Visitor
Replaced gas cap; still have problem. - Visitor
engine light came one whenever I got gas, replaced cap and it was fine for two years, now it has started again. - Visitor
had to buy a gas cap from chevy dealership because of tighten gas cap indication - Visitor
engine light on; replaced gascap...one of many issues with this car... - Visitor
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. - Visitor
Seem to go through a fuel cap every year and a half - Visitor
got message "tighten gas cap" & engine light came on. Replaced cap. No good. Cannot resolve - Visitor
check ingine light on - Visitor
Same problem - Visitor
Same issue. Gas cap light comes on. Replaced gas cap and was good for a couple of months. Now it's on again. - poorgirl2
The dash board instructs to tighten the gas cap. Then the check engine light comes on. - Visitor
Evaporative emission control system vent valve - Visitor
i just replaced gas cap and had codes reset and its okay now. - spicksangels
Wakefield in Spartanburg,SC were we bought the car NEW,put us new gas cap. - Visitor
i had a faulty gas cap, the check engine light came on, i replaced gas cap, but the check engin...
is the reason the check engine light is on because of the low collant level? or something else?...
Shakes extensively when accelerating between 25 & 50 mph, but also at other speeds. Sometimes i...
On a very rainy day, I got some gas from the Shell and 15 miles later, my check engine light st...
I have a check engine light on. The code indicates secondary air device. This prevents the remo...