Radio wont hol memory, dome light wont work when key switch off, and All lock wont unlock doors unless key in on.

it sounds like a broken wire in the passenger door.

Have the door ajar switches scanned, one may be sticking on.

Yes it is,the drive door actuator being non op

The body control module controls the door functions, have this checked.

Check the dome override switch, push it in and let it back out. Check the fuse. Check the dome lamp, is it blown?
Do you have power to the radio? Is the antenna connected?
The glass part of the back hatch locks/ unlocks along with the other doors.

I seem to be having the exact opposite problem. I have a 99 chevy blazer and the dome light will not turn off unless I push the override button in. The radio does turn off as soon as I turn off the ignition key. If I leave the dome override button out, the dome light will constantly stay on even while I am driving. It used to work fine. Every now and them it starts working properly, but it hasn't worked right for a long time now. I tested all the switches and they all seem ok. They rear hatch is also closed. Does anyone know what the problem can be and how to fix it?

Been having a problem with the dome lights on a 99 chevy blazer. Still can't figure out what the problem is. There is a dome light overide button located under the dimmer wheel. When I push the overide button in the dome light goes off, but when I open any of the doors the dome light will not come on. When the overide button is out the dome light stays on all the time and will not turn off even though every door is closed. I checked all the pushbuttons and everything tests good. Has anyone had this problem and know how to fix it?

First you can check your door adjar switches. Unplug one at a time to see if your dome light shuts off. If it shuts off replace switch that was unplugged. If this does not help your problem is the ignition switch. Thanks

I found a paritally blown fuse. When the fuse blew metal pieces ended up partially making contact. After replacing the fuse everything worked great.

If remote locks and unlocks driver door but does not unlock passenger doors,then follow the advice above:
Get in the car using the key to unlock the doors. From the passenger side lock and unlock your doors using the button on the passenger door. Get out and the remote should now unlock all the doors with 2 presses.
Worked perfectly for me after several other suggestions (and dealer) failed.