To mazeeff and mjcjtroy. Our dealer ordered and changed the thermostat to the comfort control system digital thermostat (#3109228.001) as you did. Thanks. What a difference. They ordered it along with new day/night shades for our \Montana.
Took it in and was out in a couple of hours. They did have to call Dometic and ask the dip switch settings so the heater would come on.
Again thanks for the information on the thermostat. The one that came with the Montana was worthless.
Ken and Velda Taylor
Dahlgren VA
2005 3475 Montana
2005 2400HD GMC Crew Cab diesel