Anyone ever experience their heat not working. Every once in a while when I move my temperature selector from cold to hot, the heat won't come on. I have to mess with the thing for a couple of minutes (turning the fan off and on, changing temperature, things like that) before the heat will come on. Is this likely the control box going out or the heat control valve under the hood? I'm not sure if the interior controls command the heat control valve or not or if its just controls the mixer door under the dash.
Any thoughts?
2000 GMC Yukon Denali
Any thoughts?
2000 GMC Yukon Denali
