Assume it's an automatic. You probably have a bad valve-body or clutch pack in the transmission.
if you have overdrive in that car it means that your about to go into overdrive
what would transmission not to shift in to overdrive
the overdrive sencer
What would cause the 1995 Nissan Pathfinder not to go in forward or reverse?
If the overdrive switch is turned off then the car will not go into overdrive. As it is not in overdrive, then it will not downshift out of overdrive as it normally would. It also will not shift to 3rd gear above a certain factory preset speed. Turn th overdrive on and see if it operates normally.
Linkage adjust
dirty trans fluid might be the cause. have it changed, but not flushd
it has a malfuction so its setting a code
The trans mission IS probably going out. This is a well know defect in the 2002 Tahoe. Google it.
bad filter and fluid,bad front pump,or the overdrive is going out common problem when using overdrive in the city limits meant for the highway start and always stoping not good to be in overdrive cant stress enough here at the house until she spent $3770.00 dollars dont have to tell her anymore
driving it to roughly
bad or failing alternator