Car Problem Reports

Chevrolet Blazer Check Engine Light Due to Gas Cap Issue

Chevrolet Blazer Problem
29 Reports
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Model Years Affected: 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005

Average Mileage: 106,572 mi (13,000 mi - 221,392 mi)


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

  •  Rookie

    check engine comes on but wont go off

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  • check engine light stays on never got it fixed

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  •  Rookie

    My service engine soon light came on so I took it to the Chevy dealer. They checked everything out and said the engine was fine but I probably over-tightened the gas cap and that set off the engine light.

    Not a huge deal but rather inconvenient and sometimes costly because you have to pay a mechanic to check it out just to make sure its not something more serious.

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  • Check engine light came on. I had Autozone check the reading and it showed the gas cap needed replacing. I replaced the gas cap twice and still the same problem.

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  •  Enthusiast

    have owned my blazer since 2003 and have replaced the gas cap 3 times.

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  • When I bought the car 3 yrs ago, the check engine light was on. Have changed gas cap twice and it has never gone off.

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  • Visitor, , 81,900 mi

    Recently had fuel pump replaced due to acceleration problems. Now the check engine light comes on, then off, then on again, then off again. now back on. WTF? I've been staying on top of maintaining Blazer {81,800 mi} since it was bought. Now the engine seems to be running a little rough and a little choppy when I begin acceleration. Other than that, car is running. Happened once a few years ago and it seemed that the oil was a little low. I added a quart, problem solved. light went off. This time around, added the oil, light went off, then came back on. still on, going on day three. I will wait to see what happens during the next 7-8 days of all city driving.

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  • Visitor, , 221,392 mi

    My service engine soon light come on and goes off for a while then come back on

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  • Visitor, , 115,000 mi

    i have the same problem

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  • Visitor, , 13,000 mi

    Same exact problem the mechanic just turns off the code now,.

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