The Yukon USA standard axle for 1999–2004 2WD and 4WD GM trucks with disc brakes is a 30-spline shaft measuring 33 3/4" long. Offered as a standard replacement for GM truck rear applications in that year range, this axle matches the spline count and length specified for trucks equipped with disc brakes.
USA Standard Axle For 99-04 2Wd & 4Wd GM Truck w/Disc Brakes