Shop U-joints for your 2004.5-2005 Chevy/GMC 6.6L LLY 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. 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. U-joint failure can leave you stranded or cause significant damage to your vehicle if it fails while you are driving. Shop all the top brands including Nitro Gear & Axle, Yukon Gear & Axle, and more!