Morning all.
I have a 2015 Suburban (new to me in December of 2019) and runs cold.
I have a scan gauge, and the coolant temp rarely goes above 170 in the summer, or above 155 in the winter while driving. The gauge on the dash works, and confirms it running cold.
If i sit and idle, it will creep up to 185, then the fan comes on and it will go back down.
I took it to the dealership I bought it from, and they let it idle and said the thermostat works fine but did not address the problem.
im glad to have the seat heaters because its difficult to get it warm enough inside unless I put the heat up to 75 and the fan on full..
Thoughts/ questions