2004 GMC GMC VAN - Transmission, Transaxle Automatic Transmission, 2500, 4L60E Opt M30, 135" WB, 5.3L, AWD, 60 Months Warranty. Free Shipping, 1 Month Return Policy. Used (Original Equipment Manufacturer). Transmission Tested and Run, covered by warranty. All Transmissions are Shipped as Complete Assemblies including: Transmission; Torque Converter (Automatic Transmissions Only); Oil Pan.