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

Problem Description and Possible Solution

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

Problem Data
RepairPal Verified
Average mileage: 110,787 (30,000–177,009)
10 model years affected: 1996, 1997, 1998, 1999, more2000, 2001, 2002, 2003, 2004, 2005
43 people reported this problem
Viewing 1 - 15 of 15 comments
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
Service engine light on replaced evap valve re: code. Light reset. Came back on
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.
engine light came on installed new gas cap reset car computer now it's fine.
My car light still come on now. I have changed the fuel cap and it still come on every now and then.
I haven't got the issue fixed, but its always an evap code, usually gas cap
What is the brand of fuel cap that worked? I can not locate a Genuine GM fuel cap.
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
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,
Everytime I dont turn my gas cap several times the check engine light will come on.
failed emissions. new gas cap will fix it