Hi..I got a 2000 grand am gt with 81000 miles on it. I bought it used and problems have started to arise.
First my biggest problems is that my abs and trac off lights comes on now and then. Majority of the time it is when those two things would be most helpful.....Icey/snowy and wet conditions..I dont know if this information helps or not but hey its worth a shot

. Also at slow speeds, such as coming up to a stop or turning, my brakes or wheels make a god awful anoying squeeking swishing sound. It cant be the brake pads or rotors because i had them replaced.
My last problem is that my cars starting very hard every once in a while. I changed the plugs witch seemd to help but didnt elemnate the problem. Could it possible be a dirty fule filter?
Thank you for the help