1993 GMC Sierra K1500 4x4 automatic newly rebuilt transmission . it takes off 1st time seems to be changing correctly. when i stop and take off again it seems to be hung in high gear or falls thru the
Even though the description wasn't complete I think I got it, I have had a couple of problems like this thought the years are have found most of them to be a sticky governor, as you stated newly rebuilt take it back to them and drive it with a tech, they should honor the warranty.
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