helo everyone new to your site. i just bought a 2006 dodge 2500 4x4 diesel with a auto trans.the truck has only 24 thousand miles and is all stock.my problem, i live in n w pa, when the outside temps get below 30 degrees f my truck turns over but wont fire. the grid light and transmission temp light flashes and the horn will blow like you set off the alarm.the grid heater solenoid kicks in and out.the dealership says the e c m is bad. the truck starts and runs fine above 35 degrees. any one heard or has had this problem? thanks. joe

 

I'd get a second opinion from from another dealer.