Sierra; 1500 Series; w/Limited Slip; w/Active Brake Control. Sierra; 1500 Series; w/o Limited Slip; w/Active Brake Control. Silverado. Differential Cover. Ring Gear 8.625". The Housing of a Differential that holds The Gears, pinions, Differential case, etc. Axle. Carrier Assembly. CASE. Package. Side. Spacer.