Sierra; 2500 Series; 6.6L; 3.73 Ratio; w/o Limited Slip. Sierra; 3500 Series; Single Rear Wheel; 3.73 Ratio; w/o Limited Slip. Silverado. A single complete drive axle assembly, used on vehicles that utilize dependent suspension systems, that includes a differential and drive axles to deliver power to the wheels of a vehicle in order to drive the vehicle. Exc.Limited Slip Differential. Ring Gear 11.50". AXLE ASSEMBLY -. Beam Axle Assembly. DIFFERENTIAL carrier. Drive Axle Assembly. Live Axle Assembly. Rigid Axle Assembly. Solid Axle Assembly.