2001 CHEVROLET SUBURBAN 2500 - Transfer Case Assembly Opt NP8, Auto 4WD. 60 Months Warranty Included, Free Shipping, 1 Month Return Policy. Used (Original Equipment Manufacturer). Transfer Case was tested and is warranty covered. All Transfer Cases are shipped as Complete Assemblies including Case Drained of all Fluids and all Internal Parts. PLEASE NOTE: Transfer Case will NOT Include or Cover by Warranty (if shipped with) the Wiring Harness, sensors and shifters.