There is a pinging noise when turning and door ajar light is constantly on

normally a cv joint will rumble. have a pro listen to it as noises are hard to give a correct diagnosis. the door ajar may be to a broken wire or switch that will need to be checked.

Where are the switches for the door ajar indication?
My door ajar message will not go off the doors are closed.

they are built into the door latches. you need a scan tool to read which one is reading open

Computer problem
2006 Chevy Malibu 4 cyl Front Wheel Drive Automatic
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the door ajar display and bells won't shut off. the rest of the system is thrown out of whack. where is the problem?

check the door jamb to make sure everything is tight, then check the little button in the door jamb that goes in when the door closes, take it out and make sure the wires are connected properly and havent fallen off.

suddenly, the door ajar message comes on and bells go off. all doors are closed. i clear the message and it comes back, especially when I brake or make a sharp turn.

sounds like a door switch or the door itself is out of adjustment. you may need a scan tool to see what switch isnt working properly