Hello eveyone on the Grand Prix forum, Newb to this site. I had a question about my 1997 Grand Prix GTP that I just picked up today. When me & my dad was driving home & got on the expressway we noticed as we got about 55-60mph we felt a mild jerk & when we went to about 75-80 it felt like the car was engine braking/downshifting & jerking, and my boost guage was surging & my dad was barely stepping on the gas. I don't know what it was because when we were driving in the city it was fine, shifted very smooth & when I got home the trans fluid was was light pinkish-red & it wasn't burnt (trans fluid had about 1000 miles on it). The SES light is on, but it from the o2 sensor going bad & the ABS & Check tire pressure light is on because of the wheel sensor. So could anyone give me some advice & is this expensive to fix. Oh & forgot to mention that I was getting 27-32mpg on average coming home. So I don't thing its the TCC, but I could be wrong
Thanks
Don
