2008 g6 with 3.5L v-6
my problem is when the car shifts to 3rd or 4th gear, (only under light to moderate acceleration) the tach needle jumps up and down about 200 rpms or so, and it can also be felt in the drivers seat as a slight bucking. its especially noticable going up a slight hill. its almost like the torque converter is trying to lock, and unlock. but here is the strange thing, if the car is cold, it doesnt do it, or if its fully warmed up (driven 10 miles or more) it doesnt do it. seems to be the worst just after it hits full operating temperature on the gauge. i have taken it to couple dealers but they either say its normal, or cant find anything wrong. usually i can figure this stuff out and fix it myself, but this one is difficult. as it could be any number of things. anyone out there encountered this problem in either your g6, malibu or aura?
let me know, thanks.
oh, and i did have the flash update done, but it didnt help.
my problem is when the car shifts to 3rd or 4th gear, (only under light to moderate acceleration) the tach needle jumps up and down about 200 rpms or so, and it can also be felt in the drivers seat as a slight bucking. its especially noticable going up a slight hill. its almost like the torque converter is trying to lock, and unlock. but here is the strange thing, if the car is cold, it doesnt do it, or if its fully warmed up (driven 10 miles or more) it doesnt do it. seems to be the worst just after it hits full operating temperature on the gauge. i have taken it to couple dealers but they either say its normal, or cant find anything wrong. usually i can figure this stuff out and fix it myself, but this one is difficult. as it could be any number of things. anyone out there encountered this problem in either your g6, malibu or aura?
let me know, thanks.
oh, and i did have the flash update done, but it didnt help.