I am getting false codes when the service engine soon light comes on,for the fix. i can't find a mechanic that can figure out this problem!!!!!!
I have a 97 tahoe and had the same problem. it is the valve body. it would be fine around town but when i drove a little on the highway then stopped every time it shifted out of first it was a very hard shift. if i turned the truck off for a minute then started it it would stop. after replacing the valve body it never happened again and i have driven ~40,000 more miles. it gave me some code like transfer case switch but that had nothing to do with it.
If you can give me the codes I can help you out with the problem.
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