my 94 88

hello to all my problem is my 94 88 will not shift into passing gear it boughs down i replaced all the vacume lines and the vacume thing in tha tranny and still not luck the tranny is new just wondering if anyone has any better ideas if the ecm has anything to do with it or what ever .....please help...

I assume you have no 4-3 downshift? If so it should be scanned on a trans function scanner to confirm shift points and solenoid operation, many things can cause this.

ok thankyou all for the help...i found the problem...odd but makes sence...it was the throttle position sencer...wow what a deal though i had to take the hole upper intak off to get the darn thing ..but not as hard as it sounds...so thanks again for all the help..

Good work.