2009 Buick Lucerne Check Engine Light Due to Gas Cap Issue

A loose or worn gas cap may cause check engine light to illuminate.

Affected Model Years

This issue affects Buick Lucerne model years 2006, 2007, 2008, 2009, 2010, .

58 people reported this problem

  • 2009 28,990 Miles
    On a trip to Florida week of 22 Nov 10, after fillup the message "tighten Gas Cap" kept coming up. I tightened it and then it went away until the next fillup. This week, I have the Check Engin Light on and then sometimes it will come up with the "Tighten Gas Cap", but the check engine light still stays on. I am on the 3rd gas cap. Two from Buick and 1 from Avanced Auto. Now I am told that I need to run the car 7 times to get rid of the check engine light.

  • 2009 109,000 Miles
    Check engine light comes on. sometimes would go off after tightening original gas cap. Now on constantly. Should I replace the gas cap?

  • 2009 56,215 Miles
    check engine light came on and stays on and yet the dealer can't find anything wrong.

  • 2009 120,000 Miles
    Check gas cap came on occasionally. Replaced gas cap and problem returned. I replaced the purge control valve (ac-delco part 214-1473,reset the computer and the problem has been fixed. The purge valve was not sealing when "closed" which would be similar to a bad gas cap.

  • 2009 90,800 Miles
    Car — light indicator states to tighten gas cap. The gas cap can't be tightened any further therefore the light is still on and I don't know what problems will come out of this is not repaired

  • 2009 42,000 Miles
    Engine light, tighten gas cap.

  • 2009 45,000 Miles
    Repeated 'check engine' light. Dealer already replaced 2 oxygen sensors; I replaced the original gas cap about 8 months ago

  • 2009 76,000 Miles
    First i got a "tighten gas cap" error message then after about a week i started getting check engine

  • 2009 80,250 Miles
    Check engine light illuminates after refueling, can correct bt playing with the gas cap. Takes a few miles (or starts) before the light goes out.

  • 2009 19,600 Miles
    checked gas cap , retightened it with no results, later (150) miles the light went away upon starting the engine.

  • 2009 99,000 Miles
    I have to reset gas cap when engine light comes on - which causes the engine light to go off.

  • 2009 92,225 Miles
    "Check Engine" light illuminates and remains lit until the gas cap is either removed and reinstalled OR replaced with new. I've had to replace the gas cap multiple times during my 9 years owning the car.

  • 2009 82,400 Miles
    gas cap warning light comes on sporadically even after the gas was filled 4 days earlier. The engine warning light comes on and doesn't go off unless you reset it.

  • 2009 97,000 Miles
    engine light comes on ..checked the gas cap is very loose..will not tighten

  • 2009 191,000 Miles
    Check engine light comes on. After fill up it normally goes off again. Will get new gas cap.

  • 2009 50,000 Miles
    Took it back to where I purchased it and engine light stayed off one week

  • 2009 159,000 Miles
    Got error from car. Replaced no more error.

  • 2009 0 Miles
    My car this past Fri., the tighten gas cap came up on my dash. When I stopped to get gas, I tightened the gas cap as tight as I could get it and when I turned the car on, my check engine light came on. I replaced the gas cap, but it didnt make a difference, the light is still on. Its almost a wk later and I was told it would just go off on its own, but its still on.

  • 2009 44,700 Miles
    Steady engine light on.

  • 2009 84,000 Miles
    Same deal - tighten gas cap came up - engine light is on!