why is my check engine light on on 1995 Pontiac Bonneville

check engine light will not go off and computer wont read

Asked by for the 1995 Pontiac Bonneville
you need check out the code firat, for your car, I know that the us701 scanner is useful.
hopefully help.
Or you can go to auto zone, they will check for you, and then fix for you.
1 more answer
Sometimes it can be as simple as your gas cap not being tight due to air.