One of the best things you can do your 2017-2019 GM 6.6L Duramax is adding on an aftermarket hitch receiver to make your towing and hauling applications a breeze. We carry and entire selection of different receivers that make it much easier for both stock equipped and lifted trucks, giving you more confidence when your truck is under a heavy load. We even offer a few bump steps that deliver easier access to your GM 2500/3500's bed when you're not towing anything around. GM Duramax Fitments: 2017, 2018, 2019 GM 6.6L Duramax.Submodel Fitments: WT, Custom, LT, LTZ, High Country, 1LT, 2LT, Pro, SLE, SLT, AT4, Denali.Some exceptions apply, please see individual product pages for specific fitments.