[MTCK]

It was bound to happen and it finally did. Winter arrived. I got back into town last night to -40 at the house. All our cars were outside so I plugged in the Yukon and my wife’s RAV4. They both sat all night with the juice on. Just to be safe since this is the first real cold snap in a couple years, I took the IR thermometer out this morning. Mamas Rav was about zero on the motor. Pans were close to 15. Pans on the Yukon were good. Motor was -40. WTF.

All the new GM block heaters have a thermostat on the cord. They won’t send juice to the heater until the outside temp is 0F or colder. Apparently the thing will set a code if the delta between the coolant temp and outside air temp is too much during a cold start. Mine doesn’t work. Gotta love technology.

The 3500 got plugged in for 4 hours. It has a 1500 watt circulating heater, oil pan, trans pan, and battery trickle chargers. Noon today the top of the intake was 105 degrees. No codes here.