you need to reconnect the battery
The cheapest is to get the parts out of the junkyard to do the conversion, or purchase an after-market kit and follow the directions.
Check to make sure that the windows haven't popped off the track. This would cause the windows in your 2002 Envoy to become stuck and not go down. If you replaced the driver's side master power switch and the locks work but the windows just make a clicking sound, this could help.
I would not see any way of this working. Completely two different set-ups. You have the old Sportvan and are wanting to use parts from an Express van. To say nothing of the wiring, switches & relays to convert to power windows and locks with the right parts.
Have you checked the relays?
There is no way to do this. There are child-proof locks on the sliding doors.
both my rear power windows does not work in my 2002 ford explorer, why?
Hmm, a 2002 i would say yes, well atleast it might be an option, but almost every new car from 2000 and up come standard with power locks.
There is not a specifically designated fuse for the power locks on the underdash fusebox label. The power locks are actually on the sunroof fuse (#15), whether or not the car has a sunroof. Check that fuse and replace if necessary.
Buy a Honda
Fuse #17 controls the power to power windows on a 2002 Ford Ranger. The fuse is located under the dash on the driver's side of the car.
If the windows on your 2002 Envoy will not go down, and you have replaced the driver's side master power switch, you should make sure that the window hasn't come off track. This would prevent the windows from going down and it would make a clicking sound.
where is the fuse and relay for the power windows on a 2002 Oldsmobile alero