Swap out 2002 to 2004 doors work?

Door shells are the same late 99-mid year 05 this excludes 1500 classic as it's a cat eye Chevy,doors and front fenders are different, the wiring is somewhat supported, but not used in base models, relays and fuses will need added and a different body control module. Some wiring is supported some base models will need the complete underdash wiring pull kick panel in one of front doors inspect the plug from int to exterior if it has a large number of wires it's equipped for pdl power windows, if only 2 wires it needs the whole harness or sub harness

Probably not. Accessories like the power windows and locks are controlled by the BCM (Body Control Module). The wiring harnesses are probably not in the vehicle for the accessories either. The actual doors should bolt on but the other stuff won't work. Hope that helps! Jim