tranny problem in 89 suburban

dware173

Active Member
Joined
Jan 17, 2006
Location
cave spring, ga
i got an 89 gmc suburban that has a 700r4 trans in it. when i drive down the road it will shift from 1st to 2nd just fine but then it will shift into over drive instantly. i have changed the fluid on a regular basis and everything. can anybody help me out its my daily driver. thanks drew
 
those are bad for problems had the same problem in my Jimmy I sold it before it went out to a guy that owned a shop and was goin to rebuild it.
 
Is it shifting into OD or is the lockup applying? They are easy to mistake for one another

Does reverse work normally? What happens when you put it in manual 3?
 
IIRC, 700R's don't lockup the TC before it goes into O/D
 
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