Hello.

I have a 2009 H2 and the heater is starting to take a few extra minutes to heat up. The bigger issue I'm having, however, is that the heater starts to blow cool air unless the vehicle is in motion.

Early research on the issue leaned towards the possibility of the thermostat being stuck open, but then I also saw statements about the core needing to be flushed out. I am not a mechanic by any means so any suggestions on how I go about identifying the true cause of this issue and resolving it without having to take it to an expensive repair shop will be greatly appreciated.

 

Check coolant level

 

Welcome.

MOVED. All H2 questions go in the H2 section

 

Thanks for the assistance. I took the truck in and had them do an oil change and check the coolant level and now it seems to be working properly again.