I have an issue with my Tranny, I think.
380,000 kms.
In Drive I am on the highway, going into OD, the Tach will start to fluctuate (bounce up and down)at 2000-2200 rpm. and the car will chugg, until i step on more of the gas and then it is O.K. I also notice the same problem if I am going up a steep incline or hill. It also does this chugging up a hill in 3rd. Gear as well. My mechanic has scanned the car looking for any Transmission error codes, and there never is any. I have done a tune-up as well, plugs, wires, new fuel filter. Still have the issue.
Grand Prix Forum memebers please let me know your thoughts, and any approx. associated costs if you are familiar with this problem.
Thanks!!
