Description Product Reviews 74030012 GM Chevy 2500/3500 AAM 10.5" Differential Cover Kit SUBURBAN, YUKON XL, AVALANCHE 2500 (2000-CURRENT) SIERRA, SILVERADO 2500/3500 (1999-2010) SAVANA, EXPRESS 2500/3500 W/SRW ONLY (2010-CURRENT)