Anyone else have their alarm trigger randomly when locking the car using the driver's door button? Changed the battery in the key fob, but it still happens roughly 25% of the time when I lock the car.

 

I experienced the same issue with my very low mileage 2007 GTC. Turns out, it was a loose, just slightly, main ground wire in the trunk area directly from the battery. It took a while to find and then other things started happening. I finally found it and no problems since.

 

Thanks, will definitely look into that.