Now that it is cold outside(20-30 degrees) my truck will not get up to the same temp that it used to. Does that mean the thermostat is stuck open? Here is a pic of the temp gauge at its warmest point during normal driving.
It's doesn't fluctuate at all unless I start climbing a hill and then it will get up to just under 210. I will have to check the coolant in the morning.
265,000 combined miles between My LLY and LBZ tells me your temperature is right where it should be without a winter front in 20-30* outside temps.:thumb: