Shop U-joints for your 2006-2007 Chevy/GMC 6.6L LLY/LBZ Duramax and keep your driveline operating properly. Symptoms of a bad U-joint can include clunking sounds, squeaking or clicking noises, and vibrations most noticeable at highway speeds. If the U-joint fails, it could leave you stranded or cause serious damage if the driveshaft dislodges while you are driving. Heavy loads, vibrations due to misalignment, and material wear can lead to loose play within the bearings which can ultimately lead to universal joint failure. Shop all the leading manufacturers including Nitro Gear & Axle, Yukon Gear & Axle, and more!