Hi, Scotty- Thank you for your show and all that you do ...

I own a 1990 Buick Reatta convertible with 59,000 miles on it...all Reattas have 4 speed automatic transmissions; I live in DFW area of Texas...this car starts right up, runs and drives great; however, the transmission has issues; putting it into drive/od is fine, I drive it to 1st stop sign let's say 500 yards...from dead stop it will hesitate to move/ 1st gear to engage; after it does, it could repeat same at other complete stops...while cruising above 50 mph, seems like transmission shifts from 4th/OD to 3rd then back at odd intervals with no noticeable speed decrease...I have not had it scanned and no warning lights...does this sound like a throttle valve/cable issue or ?

The tranny fluid is full, bright red and no leaks...

Tildon Peacock