2006 Pontiac montana SV6 power sliding door sensor will not acknowledge door is closed and 'ding ding ding' is now heard in my sleep!!! I've had this to three different Pontiac dealers and nothing seems to fix the problem. I've had the sensors replaced, motor services, comp chip 'reset' numerous times, the sensors cleaned repeatedly, etc,,,

I have a 2006 SV6 with the power sliding doors. The problem that I found was with the contacts on the door ( They are called plungers) the movable pins were losing connection with the fixed part The plunger is very easy to replace if you can find one. The plungers are covered with a rubber cover and is held in place with 2 plastic pins. My Pontiac dealer could not even find one in his books or even a picture of one, and claimed that he had never had anyone come with a door problem. My Chevy dealer said that it came with a wiring harness that is not needed for $154. The cure that I came up with was to take the plunger block apart (it snaps together)and replace the rusted out springs then solder 3" wires to the end of the plunger pins (they solder easy) to the tabs that go to the plug(pop out the tabs or you will melt the plastic. It took about 45 min. now the doors work like new and will never loose contact again

I removed the plunger block as well. When you flip it over and push in one of the plungers, you can see the connections that it makes. I found that inside each hole there are 2 "tabs" that needed to be slightly bent back toward the middle. The pins were not making good connection with these tabs prior to taking it apart. This seems to have worked although I will wait for a couple of really cold days to see if it acts up. So far though it has not acted up.