|
Re: Help. Engine/Transmission Problems
Just a suggestion in addition to the good advice above but check into the possibility of a flaky intake air temperature sensor (IAT) and/or the electrical connector to it. A flaky IAT sensor will make the tranny look bad such vibration, shudder, poor upshifts and going into reverse.
Normally it throws an odb-ii error code and SES light but not always. It has been a common problem with Grand Ams and Aleros with the 3.4L V6 and 4T45E tranny.
|