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Hard shift to 3rd

913 views 2 replies 3 participants last post by  chevymaher 
#1 ·
I have a 460L auto trans buttoned up to orignal 4.3, had the tranny rebuilt about 5k ago and been doing fine. For the past few weeks it has been shifting a little hard into 3rd gear, nothing real serious. Been told it's proabaly not the throttle press sensor by two mechs check for vac leaks. Didn't find any vac leaks. Had the computer checked, alls well there. When the time comes for it to shift into 3rd if I let up on the accelerator just a bit it shifts like it should. Anyone have any idea what may be happening or not??
 
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