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

Illumination of the Check Engine Light may be the result of a loose or worn gas cap.

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Average mileage: 110,787 (30,000–177,009)
10 model years affected: 1996, 1997, 1998, 1999, more2000, 2001, 2002, 2003, 2004, 2005
42 people reported this problem
15 people shared problem details
what do i do no matter how i turn gas cap engine light is on for evap sometimes it goes off
light stays on i checked it autozone they said fuel cap i bought one an light is still on
2002 Pontiac Grand Am150,000
Had the check engine light come on and everything was okay with engine- read manual and it said it could come on because of the cap not sealing correctly. Bought a replacement and the light turned off after about 50 miles.
Service engine light on replaced evap valve re: code. Light reset. Came back on
1999 Pontiac Grand Am137,000
engine light came on installed new gas cap reset car computer now it's fine.
I haven't got the issue fixed, but its always an evap code, usually gas cap
2000 Pontiac Grand Am140,000
What is the brand of fuel cap that worked? I can not locate a Genuine GM fuel cap.
My car light still come on now. I have changed the fuel cap and it still come on every now and then.
had to have the gas cap replaced numerous times was told if it had with the engine light to turn car off then restart it again
2004 Pontiac Grand Am165,000
new cap but STILL very hard to remove
had same problem but after cap was replaced it hasn't been on
Have replaced gas cap numerous times,
2001 Pontiac Grand Am140,000
Everytime I dont turn my gas cap several times the check engine light will come on.
2002 Pontiac Grand Am112,000
failed emissions. new gas cap will fix it
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