Car Problem Reports

Buick Rainier Check Engine Light Due to Gas Cap Issue

Buick Rainier Problem
22 Reports
Me Too

Model Years Affected: 2004, 2005, 2006, 2007

Average Mileage: 72,756 mi (15,000 mi - 120,000 mi)


A Loose or worn gas cap may cause Check Engine Light to illuminate.

  • , , 15,000 mi

    Have had cap replaced at least three times since we purchased auto. Started around 15,000. Dealership closed and any recalls, we are told need to go to a GM dealer or not covered even if other shops were certified through GM

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  • , , 85,000 mi

    A Toy Story Sticker solved this one for me. I stuck it right over the indicator light!! THe darn thing comes on EVERY time that I am almost empty. As soon as I fill up, it may go off, it may not. Sometimes I only have to turn the car off, go outside and screw the cap on again. It's not a very smart car.

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  • , , 50,000 mi

    The light came on signalling a Gas Cap issue. I bought a new one at the dealership where I bought the car new, and we still have the problem.

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  • , , 100,000 mi

    Every year code p0455 comes out large leak on evaporation system change the cap one time work but now a message come out in the dash board saying loose cap

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  • , , 94,341 mi

    light comes on ck gas cap have bought three new gas caps from buick dealership and yet still have the same problem

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  • , , 36,000 mi

    My light comes on and I make sure the cap is secure and it is --I wonder why the light keeps coming on

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  • Light just pop on checked gas cap don't are any problem with gas cap

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  • , , 120,000 mi

    Bought a new gas cap

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  • , , 38,000 mi

    removed gas cap and reinstalled. After a tank of gas the light went off. It has occurred twice with same result.

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  • , , 95,000 mi

    Check engine light comes on frequently due to gas cap :(

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