I have a 1999 F350 XLT Crew Cab Long Bed Dually 7.3 diesel with keyless entry, power windows/seats, and 4x4. The 4x4 does not work. The GEM in the truck has already been replaced by the previous owner due to water leak, and I think it’s the wrong part number. Dealership said they cannot reprogram the module as the software for it is obsolete. Does anyone have the proper GEM part number for this truck? I can PM VIN. Thanks!