Power windows not working and power lock not working

If none of the power buttons on your 2004 Pontiac Grand Prix are working, it could be caused by a few different issues. Here are a few possible causes and solutions:
Fuses - There may be a blown fuse related to the power windows or door locks. Check the fuse box and replace any fuses that are blown.Relay - There may be a relay that controls the power windows or door locks that is faulty. A mechanic will need to diagnose and replace the relay if necessary.Wiring - There may be a problem with the wiring that connects the buttons to the power windows or door locks. A mechanic will need to diagnose and repair or replace any damaged wiring.Switch - The switch that controls the power windows or door locks may be faulty. A mechanic will need to diagnose and replace the switch if necessary.Body Control Module (BCM) - The BCM (Body Control Module) may be faulty which controls the power windows and door locks, and other features on the vehicle. A mechanic will need to diagnose and replace the BCM if necessary.It's important to have the vehicle inspected by a qualified mechanic to diagnose the problem and perform the necessary repairs. Some of the issues can be easy to fix, but some require more extensive repairs and knowledge of the systems.

Look at the end of the dash and between the drivers side door for a second fuse panel. I think everything you mention works on one data bus. You can remove the button pad on the drivers door. Since it gets used all th3 time i# might have gone bad messing up the works.

it maybe the BCM may have a problem or needs to be reset.

Check the fuses in the fuse box.

As per this problem,there are help links provided to troubleshoot the exact cause of problem.Click the link below to go through the procedure :----Diagnosis & Testing Power Windows? http://repairhelpcenter.blogspot.in/2012/02/diagnosis-testing-power-windows.html----------
Door locks or windows not working on car?
http://schematicsdiagram.blogspot.com/2011/07/door-locks-or-windows-not-working-on.html
------------Car windows will go down but come right back up
http://schematicsdiagram.blogspot.com/2011/06/car-windows-will-go-down-but-come-right.html

Electric Window Motor REMOVAL and INSTALLATION ?
http://schematicsdiagram.blogspot.com/2011/06/electric-window-motor-removal-and.html
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Driver side power window wont go up on ford expedition?
http://howtobyme.blogspot.com/2011/10/driver-side-power-window-wont-go-up-on.html

How to replace window motor and regulator on jaguar S-Type?
http://howtobyme.blogspot.com/2011/09/how-to-replace-window-motor-and.html

How to remove window motor and regulator?
http://howtobyme.blogspot.com/2011/09/how-to-remove-window-motor-and.html
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power locks, power window and power mirror on the passenger side not working ?
http://howtobyme.blogspot.com/2011/09/power-locks-power-window-and-power.html
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All power windows not working?
http://howtobyme.blogspot.com/2011/09/all-power-windows-not-working-on-2003.html
-----------Power windows works intermittently? http://schematicsdiagram.blogspot.com/2011/12/power-windows-works-intermittently.html
--------Power window fuse location? http://schematicsdiagram.blogspot.com/2012/01/power-window-fuse-location-for.html
----------Power windows will not go up and relay clicks when switch is pressed? http://technoanswers.blogspot.com/2012/01/power-windows-will-not-go-up-and-relay.html
----------Keyless keypad on drivers door stopped working?

http://technoanswers.blogspot.com/2012/01/after-alternator-failure-keyless-keypad.html

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Remote will not unlock Rear door ?
http://schematicsdiagram.blogspot.com/2011/12/remote-will-not-unlock-rear-door-on-gmc.html
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Door locks or windows not working on car?
http://schematicsdiagram.blogspot.com/2011/07/door-locks-or-windows-not-working-on.html
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Car door will not close?
http://howtobyme.blogspot.com/2011/11/car-door-will-not-close.html

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All power door locks not working on?
http://howtobyme.blogspot.com/2011/11/all-power-door-locks-not-working-on_14.html
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Repairing car Door lock Actuator?
http://howtobyme.blogspot.com/2011/11/repairing-car-door-lock-actuator.html

How to Access car door panel?
http://howtobyme.blogspot.com/2011/11/how-to-access-car-door-panel.html

Vehicle door panel components?
http://howtobyme.blogspot.com/2011/11/vehicle-door-panel-components.html
----------Front Door dis-assembly diagram?

http://repairhelpcenter.blogspot.in/2012/02/front-door-dis-assembly-diagram-for.html

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Rear Door dis-assembly diagram?

http://repairhelpcenter.blogspot.in/2012/02/rear-door-dis-assembly-diagram-for.html

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How to test Power door locks? http://repairhelpcenter.blogspot.in/2012/02/how-to-test-power-door-locks.html
--------This will help.Thanks.

CHECK FUSES FOR POWER WINDOW,CHECK FUSE FOR POWER MIRROR AND CHECK FUSE FOR POWER DOOR LOCK.IF FUSE OKAY DOOR CONTROL MODULE FAULTY ITSELF.

You are going to need to check the power lock control moduel on the inside of the door panel. If the FOB appears to be working but the doors are not unlocking, you need to check this. I would also replace all fuses that control the locks. If both of these devices check out ok, you may need to replace your FOB. To check your power lock control moduel, manually lock and unlock your doors by pressing the lock button on the inside of the door. If it does not work, it is either the fuses or the power lock control moduel. If it works, your FOB has gone bad. Hope this helps! Please rate 4 thumbs up!

replace the power window master switch and chances are the lock actuators are bad. replace as neccessary. happy holidays

if you can here relays when unlocking/locking check for power at door lock actuators inside doors, if you have power on lock/unlock and good earth from connector actuators are faulty.
if no power on test light when operating check output from central door lock module while operating, none coming out of module then it might need replacing.
check 30Amp power fuse for main relay under bonnet (which goes to pin 8 white/blue on module)and 10Amp gauge fuse in cab(pin 1 blue/red on module),pin 15 is also power when relay is on(red/blue) with test light, and module/ actuators.
check outputs from module pin 3 & 4
blue/red
blue/black
that go to door locks

I had the same problem with now power to windows, mirrors and seat. The common soulution is the orange and or black wire in the boot have broken between the door and post.