Check Engine Light Due to Gas Cap Issue on Pontiac Grand Prix

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

RepairPal Verified
Average mileage: 117,913 (28,000–210,000)
7 model years affected: 1996, 1998, 2004, 2005, more2006, 2007, 2008
76 people reported this problem
35 people shared problem details
check engine light is on. I get a message to check gas cap. I replaced the gas cap but am still getting the same message.
18 people like thisFlag inappropiate
i had 2 codes one catilac converter had that repaired po455 code had that checked smoke test found no leak went to gm dealer got new gas cap how long does it take before check engine light goes off
16 people like thisFlag inappropiate
Why does the information center ( where the day and date, odometer etc. are displayed ) in my 2006 Pontiac Grand Prix V6 3.8 liter always say check gas cap? When I fill up my gas tank I always make sure to click my gas cap three times to make sure it's closed. And by the next day my information center will say check gas cap and when I do, sure enough it is loose. I bought another gas cap (kind of a generic one) and it still does the same thing. I went to a Pontiac dealer and asked them and they had no idea. they told me to replace the gas cap. So once again I bought another gas cap that I purchased from the Pontiac dealer that is exactly the same as my original gas cap. And again my car keeps saying check gas cap! I've search the web and find nothing to help me with this problem.
11 people like thisFlag inappropiate
Check gas cap indicator keeps coming up. Checked the cap several times, then replaced the cap. Still comes on.....
9 people like thisFlag inappropiate
Ive had this problem continuously for pretty much the lifetime of the car and I bought it new. Replacing the gas cap has not solved the problem.
6 people like thisFlag inappropiate
Changed Gas Cap still has indicator light for check gas cap
5 people like thisFlag inappropiate
New gas cap did not fix the problem. Throwing code P0455 - EVAP system leak (large) - customer had to take car on trip and will drop it back off when they return.
4 people like thisFlag inappropiate
Check engine light came on. Problem was corrected by installation of a new gas cap and gas line filter.
3 people like thisFlag inappropiate
car indicated gas cap failure on service screen - replaced cap and warning cleared itself.
3 people like thisFlag inappropiate
Light in car indicated gas cap loose replaced gas cap still not fixed issue.
1 person likes thisFlag inappropiate
Check gas cap, not fixed
1 person likes thisFlag inappropiate
I've had this happened to me as well after replacing cap for the third time I found out I had a small leak in the evap. fuel emission canister which I have to have replaced
1 person likes thisFlag inappropiate
My check engine light came on. Problem diagnosed was loose fitting gas gap. Bought new cap and light went off.
1 person likes thisFlag inappropiate
i have had issues with this car but this issue check gas cap came on called gm told me to replace gas cap got new one from gm at a cost of coarse light went off for about a month came back on
I had the Check Gas Cap on the screen above my radio, and then it threw a check engine light about a week later.
Keep saying check gas cap and now the Service engine soon lite is on
My check the gas cap light comes on.
I have the same problem but have not found a solution. A new gas cap did not work...
message center instructs me to check gas cap. Nothing wrong with it. Pontiac should do a recall and fix the problem.
Emmision light on. Went off and came back on after fueling up the vehicle. Light since on hae ordered a new gas cap to see if this fixes the problem
Related Items:
I did replace the gas cap, after a couple of trips it hasn't come back on. The engine light is...
The exhaust gas recirculation (EGR) tube which connects the EGR valve to th...
The oxygen sensor can fail causing Check Engine Light illumination and the engine to run rich (...
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "

Related Content