Grand Prix gxp problems

[a1abc123]

I have a 2007 Grand Prix gxp and I've gotten my transmission done and 15,000 miles later my car is sputtering like the transmission might be trippin. Has anyone had similar issues?

[Fivefingerdeathpunch]

Sputtering and transmission don't make much sense. Sputtering seems more like a engine thing to me, like misfires or chugging.


You need to give more details, like is it slipping, not shifting, no going forward etc etc.