Yeah , no guess work thats why you went to auto zone ....ha ha why in the hell do people go there? They are parts sales people, not trained technicains Dont you know the codes are just a starting point unless you just wanna "guess" ......lemmie guess ......the FREE scan(where do all these big spenders come from?), Then you need facts from people who cant see your rig from where they are? are you nuts? If you dont know how to check grounds and switches / read a wiring diagram then maybe you should PAY someone who does to do the diagnosing for you. Anyway you go your gonna have to bust out the wallet. I.E. factory service manual and digital multimeter,a bicycle, or some new shoes ...so get used to the idea. there will never be an automobile of any kind thats FREE to drive....yeah I could help with several hours of coaching ..do you have a multimeter at your disposal ? are all grounds clean and tight? battery cables clean and tight? check the basics and give us something to work with here. what year is it? that would help.....so I know what year wiring diagram/diagnostic info to get....