Here we have a good used rear differential removed from a 2022 GMC AT4 3500hd with the 6.6 duramax with only 7000 miles! This has 3.42 gears with G80 limited slip differential option. Fully functioning condition with no issues or damage. Should fit most 19-22 GMC 2500/3500 trucks, but please confirm fitment BEFORE buying! Removed from Vin# 1GT49PEY9NF193302.