I bought 2500 hd 6.6 duramax…
I bought 2500 hd 6.6 duramax diesel. It had 65,000 miles drove it 249 miles and check engine went off and it wouldn’t go past 40mph. Had to take it in they said the valve body in the transmission was bad and they had to reset the tcm or something. They replaced the valve body or at least that’s what I’m told.