Ok I have a 94 V6 with an automatic transmission that is wearing down. I've had a problem with the service engine light coming on when de-accelerating on the highway but it doesn't do this all the time and sometimes it will come on for only a minute and go off. Now I've just started to hear some squeaking when I brake hard. I've only had the pads for way less than 20,000 miles so I don't know if something is wrong with the brake line or if the rotors are just rusty or what. I also had a problem with my exhaust that was shaking my console real bad before I got a pipe switched out. It was fine for a few months but now that is acting up again. I wanted to get some feedback before going to the shop because I think there could be any number of things wrong here.