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Shop Now Parts, Tools, and Manuals for 1988-2007 GM full size trucks and SUVs based on the GMT-400 (1988-2002) and GMT-800 platforms (1999-2007). We have available a large selection of Manual Transmission, Transfer Case, Driveshaft, Rear Axle, and 4x4 Front Axle Parts for C1500, K1500, C2500, K2500, C3500, Chevy Silverado and GMC Sierra trucks plus parts for Chevy Suburban, GMC Yukon , GMC Yukon XL, Tahoe, Escalade, Avalanche, and Hummer H2 SUVs. Although the bodies on many of these vehicles differ widely, the drivetrain components underneath share many common features.