why is my check engine light on on 1995 Pontiac Bonneville

check engine light will not go off and computer wont read

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2 answers
you need check out the code firat, for your car, I know that the us701 scanner is useful.
http://chinasinoy.com/wholesale/maxiscan-us703-code-scanner-reader-free-shipping.html
hopefully help.
Or you can go to auto zone, they will check for you, and then fix for you.
Sometimes it can be as simple as your gas cap not being tight due to air.