Restore drivability in your 2001-2004 Chevy/GMC 6.6L LB7 Duramax with a replacement Driveshaft for your vehicle. Drivability issues like vibration, clunking sounds while shifting, or a clicking or knocking noise could be signs of a failing u-joint or damaged driveshaft. For lifted applications brands like Cognito offers the driveshafts you need to keep your truck driving smoothly. Get the replacement driveshaft your vehicle needs from manufacturers like Dorman, USA Standard Gear, and more.