"Door Ajar" signal on dash panel stays on even when doors are clo

It should tell you which one .
Driver Door Ajar Malfunction
Passenger Door Ajar Malfunction
If not a scan tool would be the best way.
Ignition ON, observe the scan tool Driver Door Ajar Sw parameter while opening and closing the driver door. The parameter should change between Door Closed and Door Ajar
? If the parameter does not change, refer to Driver Door Ajar Malfunction.
With the passenger doors closed, observe the scan tool Door Ajar Switch parameter while opening and closing each door. The parameter should change between Door Closed and Door Ajar.
? If the parameter does not change, refer to Passenger Door Ajar Malfunction

Ignition OFF, disconnect the harness connector at the driver door latch.
Test for less than 5 ohms between the ground circuit terminal 8 and ground.
? If greater than the specified range, test the ground circuit for an open/high resistance.
Ignition ON, verify the scan tool Driver Door Ajar Sw parameter is Door Closed.
? If not the specified value, test the signal circuit terminal 6 for a short to ground. If the circuit tests normal, replace the BCM.
Install a 3A fused jumper wire between the signal circuit terminal 6 and the ground circuit terminal 8. Verify the scan tool Driver Door Ajar Sw parameter is Door Ajar.
? If not the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the BCM.
If all circuits test normal, test or replace the driver door latch

In side you dash is a electronically controlled actuator call a mode actuator , it controls which vents the air comes out of ! They go bad, plastic gears in side of it wear out, a lot of times you'll hear a clicking sound in the dash. They are not to tough to fix ,you need to take Instrument Panel Insulator Panel off - Left Side under dash . Some times stuff drops down in an binds up the door inside .Have a little child , they like putting stuff in the vents ,pencil's an the like.
Mode Door Actuator Dorman 604 121 Controls Airflow Direction

HI; SO Sorry I have not had that problem a code reader may come up with something or call GM

It typically, should be incorporated in drivers side dash next to inside door panel or in dash below drivers side.

This is caused by one of the many door sensor switches being defective. You can tear all the door apart and replace all the switches or have the dealer scan the body control module and quickly pinpoint the bad switch.,

a bad door ajar switch will cause this problem the hard part is finding what door it is

Hello: You have a switch in one of the door latch assemblies that is not working, Use of a up scale scan tool can identify which door. the only other way is to remove each door panel and trouble shoot each latch assembly.

if the window isn't automatically rolling up when u shut the door u can reset the memory by turning till ur dash lights are on only don't start the car , then hit the window up button for few seconds then down button few seconds after the window is down then roll the window up should be fine

Usually they are under the dash or on the side of the dash by the drivers door. There should be a diagram that shows which fuse works the tail lights. Use the puller provided, pull the fuse out and check to make sure that the interior wire is broken. If it is replace the fuse. If it is not have a mechanic look at it for a short

there should be a switch mounted( or more than one) in the door jamb that tells the car when the car door is open...i will probably look like a little plastic plunger...might be broken off or bad internally