Power Locks, window, mirrors not working....

Hello everyone...I just found this forum and i think its great and thanks to everyone for their help...I have an 02 xtreme with about 78000 miles on it...At first I noticed the back latch wouldn't open...it doesnt open with the swich on the dash or the keypad...and the power door locks on the door do not work...either side...but the remote still works to lock and unlock...during this time the power windows did work...now all the sudden the driver window doesnt roll down..the passenger side still does...and the power mirrors do not work..though i do not know how long they have not worked...I started checking some of the fuses and they all seem to be ok...This seems strange cause at least something is still working...any ideas on what to try, or should a dealer just look at it...Thanks so much

check and make sure all the grounds have good contact to the body, and if you dont have a test light or multi meter, get one and check to see if you have power in the door, or if the problem is befour that

Did you check the fuses?

Update....I found a fuse under the hood..the mirror/lock fuse 2 and it was bad...that fixexd the door locks, hatch and mirror...now still the driver window wont open power...the power switch does work on the driver door for the passenger window....maybe the window isnt related to the other things since it did happen a little while after the other items...