Need a part, don't know the name

CHECK WITH AUTOZONE, OR O'REILLY'S! YOU CAN GET A REPLACEMENT TRIM PIECE, AND DO IT YOURSELF!

is the button pushed or on the dash to dim the dash lights is that turned for the dome light is on. if none of that then the switch in the door is bad/shorted

You may be lucky and just have to remove the top section just behind the mirror. Usually you have to remove the door panel to access the bolts.

its what your front bumper bolts to

Click this link. It will tell you all you need to know, and then some.

http://www.saturnfans.com/forums/showthread.php?p=1323640

Put the key into the keyhole and turn it counter clockwise. Now, if you want to lock all doors without using the key or the remote key fob, you can press the lock button your door. The car will chime a few times, then shut your door. About 5 seconds later, all doors will lock. Neat, huh?

there are two rear exterior door panels for an 06 ION on ebay, possibly is same part, needing only paint to match yours. also look around in the craiglist for your area.

One of the door triggers or trunk or hood could be falsing. Do you know how to reset your alarm?

Look on Craigslist for your area or on ebay motors. On a car this new could be hard to find. You can also try local junk yards. I would call around to some local body shops and ask them to check their sources for used late model parts with the understanding that if they find one you will pay for it and pay them to install and paint it the correct color.

More likely the transmission - could be the overdrive solenoid is stuck in the engaged position.