Pontiac Problems? Ask a Mechanic for Answers ASAP
Sorry about not adding that to orignal question Emily, you can have these checked at your local parts store such as autozone, champion, ect. Codes need to be checked with a scantool which parts stores and auto shops have. Sorry there is not a easier way to get codes but the good news this sounds like just a loose connection which should not cost over a couple hundred to diagnose and troubleshoot. Let me know if you have questions, thanks.