2004.5-2005 GM Duramax 6.6L LLY Hitches
Upgrading your 2004.5-2005 GM Sierra/Silverado's hitch is necessary when you find yourself constantly towing near it's GVWR or GCWR. A new Class III hitch is stronger and more reliable than the factory hitches seen on some GM 2500/3500's, and will last longer while delivering a better towing experience compared to the weaker factory hitches. For those constantly towing or hauling heavy loads, an aftermarket hitch can make all the difference on your custom GM 6.6L Duramax LLY build. GM Duramax Fitments: 2004, 2005 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.