2001 Chevy van that changes gears roughly?

ummmm

New member
It's an automatic and it starts changing gears roughly after it's been driven for about 30 mins - an hour. Any ideas for a solution?
 
Change the transmission fluid and filter if it has one and start saving for a new transmission.

Whatever you do, don't have the transmission flushed, just "drop the pan" and have it drained and filled.
 
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