Bolts to 4l80e transmission with gas engine or 5 speed manual transmission. If you need one for diesel, you need np263xhd This unit has been completely disassembled, inspected and cleaned, new bearings, seals, Chain, pump, forks, slider hub. Must use use ac Delco blue AUTOTRAK II fluid and be changed every 10k mi. The item "Rebuilt Transfercase NP263HD silverado sierra Avalanche 2500HD" is in sale since Friday, July 7, 2017. This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts\Transmission & Drivetrain\Other". The seller is "petroman1414" and is ...