Tranny fluid change
Got 70,000 miles on the current ATF oil, so today it and the spin-on filter got changed. I also dropped the pan to see if there was any sludge and it was clean. Love this Duramax/Allison combo.
Forum Discussion
When I had my 2008 Chevy it had the spin on filter which was nice. My 2020 GMC with the 10 speed transmission does not have a dipstick or any place to check the ATF. It is a closed system that I will probably have to take to the dealer to have the ATF changed.
