We have an 05 Tahoe...320000+ miles on the original transmission fluid
Toyota in Tupelo did a basic drain & fill of my Tacoma ATF, but that only actually gets a percentage of the old fluid out to be replaced by new . . . at a $250.00 cost!
If it ain't under warranty, no reason at all to spend that money at the dealership. Take it to a transmission shop and it probably would have been 1/2 that
