2006 Pontiac Grand Prix Q&A

2006 Pontiac Grand Prix Question: What make my car to stop.. when driving it just shot...off

been told to change tranmission +SHIF GEAR 3,4 and it steal does that .. did put on a computer to get a code but every time that the car shots down...it seem that it resest it self so having a big problem to get a diagnostic... very dangerrous on hyway.. -
Answer 1
scan codes and post so we can adv. post eng and trans codes if possible -
Answer 2
What did your car shoot the code down? It is dangerrous to steal your shifting. Don't change your transmission yet. Reset itself is a big problem for diagnostic. -
Comment 1
The entertainment is addicting isn't it? -
Answer 3
"very dangerous on highway"---depending on priorities--like LIFE---maybe getting it to a local shop(get references) and having it driven and diagnosed first hand might be a good idea. -