I have a 2004 Buick LeSabre with 64,000 miles and it's in great shape but the only diagnostic code coming up, is an 02 sensor and yet, the car tends to jerk forward while in drive sometimes.
I am wondering what it could be. Firestone could not find anything wrong with it other than
the oxygen sensor needed cleaning out and the car is still jerking forward while in drive.
Transmission shop seems to think it cannot be a transmission issue. I have had a
transmission flush by machine done. Any ideas?