Replacing your drive shaft doesn’t have to be complicated. This complete drive shaft assembly is pre-balanced and ready to install with 100% new yokes, tubes, constant velocity (CV) joints and universal joints. Drive Shaft Wall Thickness (in) – .083″; Greaseable Drive Shaft – No; Drive Shaft Length (in) – 83.352″; Overall Length Adjustable – No FEATURES: Engineered for superior durability backed by a 1 year unlimited mileage warranty. Guaranteed precision fit for easy installation – Arrives to your home fully assembled and balanced, ready to install! 100% NEW, Premium ISO/TS 16949 Quality – No Deposit or Returns Required! Please note that this is the drive shaft or propeller shaft that runs from the front to the rear of your vehicle, connecting the transmission or transfer case to the rear differential. It is not the same as the CV axle, which connects the transmission or differential to the wheel. Fits all 2001-2006 Chevy Silverado and GMC Sierra 2500 and 3500 Extended Cab 4WD with automatic transmission and a 157.5-inch wheelbase (plus 2007 SIlverado and Sierra Classic with the same options). Wheelbase is the distance between the centers of the front and rear wheels, and it is very useful to know when ordering a drive shaft for any pickup truck due to all the available cab and bed lengths. SPECIFICATIONS: INTERCHANGE WITH THE FOLLOWING PART NUMBERS: 91-01120 N, 91-01120N, 15024406, 15077434, 15128092, 19101120-101 FITS THE FOLLOWING: Year Make Model Details 2001 – 2005 Chevrolet Silverado Model 2500 – 4WD – Extended Cab – 5-Speed Automatic Transmission – 157.5″ Wheelbase – 1 Each RWD 2001 – 2005 Chevrolet Silverado Model 3500 – 4WD – Extended Cab – 5-Speed Automatic Transmission – 157.5″ Wheelbase – 1 Each Rear Shaft 2006 Chevrolet Silverado Model 2500 – 4WD – Extended Cab – 6-Speed Automatic Transmission – 157.5″ Wheelbase – 1 Each Rear Shaft 2006 Chevrolet Silverado Model 3500 – 4WD – Extended Cab – 6-Speed Automatic Transmission – 157.5″ Wheelbase – 1 Each Rear Shaft 2007 Chevrolet Silverado Model 2500 GMT800 – 4WD – Extended Cab – 6-Speed Automatic Transmission – 157.5″ Wheelbase – 1 Each Rear Shaft 2007 Chevrolet Silverado 3500 Model GMT800 – 4WD – Extended Cab – 6-Speed Automatic Transmission – 157.5″ Wheelbase – 1 Each Rear Shaft 2001 – 2005 GMC Sierra 2500 – 4WD – Extended Cab – 5-Speed Automatic Transmission – 157.5″ Wheelbase – 1 Each Rear Shaft 2001 – 2005 GMC Sierra 3500 – 4WD – Extended Cab – 5-Speed Automatic Transmission – 157.5″ Wheelbase – 1 Each Rear Shaft 2006 GMC Sierra 2500 – 4WD – Extended Cab – 6-Speed Automatic Transmission – 157.5″ Wheelbase – 1 Each Rear Shaft 2006 GMC Sierra 3500 – 4WD – Extended Cab – 6-Speed Automatic Transmission – 157.5″ Wheelbase – 1 Each Rear Shaft 2007 GMC Sierra 2500 GMT800 – 4WD – Extended Cab – 6-Speed Automatic Transmission – 157.5″ Wheelbase – Solid Rear Shaft 2007 GMC Sierra 3500 GMT800 – 4WD – Extended Cab – 6-Speed Automatic Transmission – 157.5″ Wheelbase – Solid Rear Shaft