shifting hard

My 02 automatic accent seems to be shifting kind of hard, are there any TSB's out for this problem? I dont know if its happing becasue the weather is getting colder, or maybe its normal and i have never noticed it before, i kind of "jumps" when i am backing out of my driveway then put it in drive. I am going to make and appt monday to check to see if any codes exist, is there anywhere else besides a hyundai dealership that would have the equipment to read the codes ie: advanced auto parts?

yup, advanced auto parts should do it for free. or a pepboys or something.

whens the last time you changed your tranny oil? i dont think its the cause of the problem, but its def. worth a shot.

I am getting the fluid changed next monday, I did discover that I was about 1 quart low (i hope its not leaking), which i added today. I cant believe that hyundai only said you have to get the fluid changed every 100,000 miles