when the transmission shifts into overdrive it kind of hic-ups before it goes in sometimes. ive read about electronic switches on the transmission that allow the computer to tell the trans to shift. does anybody know any part numbers or any more info on these switches??

the trans was rebuilt about 500 miles ago.

 

Not really sure, but I'd say maybe with your tranny being rebuilt 500 miles ago that your PCM just hasn't adjusted to it yet. Seems that way with alot of things. Give it another couple hundred miles. If it doesn't go away then you can spend money on something

 

are you saying the pcm needs to "learn" the newly rebuilt transmission? never thought about it that way...

hmm