...heater core in back is clogged, or air bubble. If your able to locate the two heater hoses that run to the back of the vehicle and check to see if there hot next to the heater core. if both are hot ...
heater core.This is probably your problem.If you know where the heater hoses go into the back wall of the engine compartment then feel the hoses.They should both be hot to the touch with the engine at
Question about GMC Yukon XL
...thought is the thermostate is sticking?am i right? it can be the thromstat,but have you check to see if both heater core hoses are getting hot. if only one is getting hot then you need a heater ...
...air temperature control blend door actuator, this is what moves the door that controls air flow across the heater core or the ac evaporator core, to replace this requires u remove the dash
...in the rear. If so, the problem is probably either the heater core leaking, a hose leaking, or a hose connection leaking. If you want to further investigate and possibly fix yourself, let me
...out the vents, could be a blocked cabin air filter or a problem with one of the blend doors under the dash.The blend doors direct air flow thru the heater core and ac evaporator as well as the
heater core first if it doesnt work then its clogged up try to turn the heater on the front with the heater off for the back keep an eye on the temp guage if it goes up than normal then its clogged...
...it can be a problem? heater core is bad needs to be replaced it is located behind clove box this is like a radator that is used to heat the air around it so that you recieve hot air when you need ...
Question about GMC Yukon XL
...heater core that has sprung a leak. Think of your heater core as a mini radiator but inside the vehicle and they are usually tucked up inside the dash somewhere and is usually quite expensive to have ...
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