Just wanted to update everyone on what I did to fix it in case anyone else runs into this issue. All I had to do was install a new ECM. No more issue after that. Runs like a brand new vehicle.
Thanks for the help. God bless!
Hey guys I bought my 97 Tahoe 2 door 4x4 about two months. From the day I bought it I've been having this issue. When the engine is cold it shifts hard from 1 to 2 and will not shift into 4. Also it will not downshift into 1 either. It throws a code of P0785 also. But when it warms up to normal...
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