Pontiac Pursuit power door locks and power mirrors got wet and won't work, will it be expensive to repair?

I tried the DIY service and repair manuals from a website and it actually helped me repair transmission problem in my
jcb 3cx site-master. it wont move forward or reverse, engine is good both solenoids for forward and reverse work.
I don't have much technical knowledge but I just followed it step-wise, and works perfect! got it from www.reliable-store.com

I'm sorry to hear about the troubles you are experiencing with your Silverado Jeanette. It sounds like the detailer may have gotten liquid inside the driver's door panel/armrest. Since you say the door locks still work with the fob and all the fuses checked good then I can only assume water intrusion in these switches is the problem. Water could also cause the speaker to short out and become non-functional. This year model truck is notorious for door lock actuator, power mirror, and speaker failure. I've had to replace all on my 2008 Silverado along with the mirror switch. There are several good videos posted on YouTube on how to troubleshoot these problems which may be helpful if you are a DIY kind of person. Otherwise you'll have to take it to a trustworthy mechanic to do the troubleshooting and repairs for you. Hopefully you know someone who is good at this sort of thing because the dealerships will charge you a small fortune to repair them. Have you contacted the detailer to see what he may do to help with the cost? It couldn't hurt!

The power windows, locks and mirror all work off the same fuse. Check your manual to see what one it is.

I would guess the problem would be located with the drivers door harness. All of these items are controlled from the same place, remove door panel and check harness connectors for tightness and water damage.

the drivers door switch is also a door module and ever thing from for the door goes threw it

For all types of power window problem and power windows not working,i suggest you to go through the help links given below. Click the link to go through its procedure to troubleshoot the problem :------

Power window problem
http://repairhelpcenter.blogspot.com/2012/01/pontiac-grand-am-power-window-not.html
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Power windows not working after car wash?http://howtobyme.blogspot.com/2011/11/power-windows-not-working-after-car.html
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power locks, power window and power mirror 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
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How to remove window motor and regulator on Car?
http://howtobyme.blogspot.com/2011/09/how-to-remove-window-motor-and.html
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Complete Diagnosis & Testing Power Windows?
http://repairhelpcenter.blogspot.in/2012/02/diagnosis-testing-power-windows.html
-----------This will help.Thanks

Gm and Chevy fob can be programmed at home. I have done it my self for a 01 chevy a 03 sunfire.
The steps on
 Step 1 of 5
Get in your Pontiac G6 and make sure all the doors and the trunk are closed.

 Step 2 of 5
Put your key in the ignition and hold the "Lock" button on the driver's car door.

 Step 3 of 5
Turn the G6 key in your ignition from "On" to "Off" while holding the "Lock" button, and do two more cycles of "On" and "Off" in quick succession.

 Step 4 of 5
Release the "Lock" switch on your door and press and hold the "Lock" button on your keyless remote for 10 to 15 seconds.

 Step 5 of 5
Remove the key from the ignition of your G6, and test the programming.

Or

Or

 Step 1 of 9
Enter your vehicle and close all of the doors behind you besides the driver's door. Be sure to have your keyless remote and ignition key in hand.

 Step 2 of 9
Insert and remove the key from the ignition twice in a row and then close and open the door twice in a row.

 Step 3 of 9
Insert and remove the key from the ignition again and close and open the driver's door two more times.

 Step 4 of 9
Insert the key into the ignition and close the driver's door.

 Step 5 of 9
Cycle the key in the ignition "On" and then "Off" and then remove the key from the ignition.

 Step 6 of 9
Wait for the locks to cycle to indicate the beginning of the programming sequence.

 Step 7 of 9
Press and hold the unlock and lock buttons on your remote for two seconds and then release.

 Step 8 of 9
Press and hold just the
lock button on the remote for three seconds and wait for the locks to cycle to indicate successful programming.

 Step 9 of 9
Repeat steps seven and eight to program any additional remotes and open the driver's door to end the programming sequence once you are finished.
Hope this helps

This is a typical GM problem, most likely are broken wires on the driver's side door. Every time the door is opened and closed, the wires running from the door to the car body flex. Over time these wires break and cause loss of use for power options like you have. It could just be coincidental that they broke in a rain.
There could be other electrical problems such as relays that have become wet and failed or a wide variety of other solutions. Electrical problems never have only one answer

Since the locks stopped working as well, my guess is a fuse is blown. The first thing you should always do when accessories or lights or electrical things stop working is check all of your fuses (sometimes you'll have them in the engine bay as well as under the dash). I can't tell you how many times I've spent hours trying to track down an electrical problem only to discover that work I was previously doing had made a fuse blow.

It may also be a bad relay but I'd start with the fuses first.

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.