2001 GMC Yukon XL 1500 Differential Carrier RWD - GM 8.6 in. - Yukon Grizzly Locker - 2.73 Gear Ratio And Up - 1.78 in. Bearing Journals - - Rear guaranteed to replace your current 2001 GMC Yukon XL 1500 Differential Carrier RWD - GM 8.6 in. - Yukon Grizzly Locker - 2.73 Gear Ratio And Up - 1.78 in. Bearing Journals - - Rear. 2001 GMC Yukon XL 1500 Differential Carrier comes new OEM 2001 GMC Yukon XL 1500 Differential Carrier aftermarket new 2001 GMC Yukon XL 1500 Differential Carrier of remanufactured 2001 GMC Yukon XL 1500 Differential Carrier RWD - GM 8.6 in. - Yukon Grizzly Locker - 2.73 Gear Ratio And Up - 1.78 in. Bearing Journals - - Rear.