Remove the power locks and windows fuse you will loose power for your windows also
It can be your battery, when it doesn't have enough power the computer will not allow you to use power stuff. It can be also one of the relays which are responsible for stuff like power locks, power windows and so on.
Cause the window motor is out
The fourth fuse in the interior fuse panel controls the power windows and locks on 2000-2001 Grand Prix. 25 amp silver fuse.
Pw= power windows Pl= power locks
i just got my 88 beretta gt 2 days ago and it is great!to answer your question,yes the 88 etta gt does have power windows and locks
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.
Check your fuses.
Key?
Maxi fuse # 10 - 30 amp is for power windows , power locks and power seats
Power options: Power Windows, Power Locks, Cruise Control, Power Mirrors, Power Seats
Check the fuses.