You don't. The fuel filter is part of the fuel pump assembly in the fuel tank and is not serviced as separate part.
A 2002 and before Dodge Ram 2500.A 2002 and before Dodge Ram 2500.
drop the gas tank
No.
It was built with one.
You need a programmer to change the software in the engine computer.
No.
Hire a professional mechanic, or buy a repair manual.
Yes.
One from the factory.
1998 - 2002 2500's are the same body style and components.
There are 3 grease fittings on a 2002 dodge 2500. Once the aftermarket joints are installed the number increases depending on the joints installed.
A 2002 Ram was not built with a cabin filter.