2005 GMC Envoy "check heater hot air" Questions

...05 envoy the rear heat is not working just blows cold air Check to see that coolant hose going to the heater is hot. If not, may need to change the valve at the firewall to fix this common

...check your heater blend door which should be behind your glove box. it's also possible that the mechanical lever has partially jammed on those blending doors. regardless of the reason, you won't know ...

...heater, A/C unit AND the rear air suspension light will not work and the rear end will not come up. The blower will not work no matter what level you have it on and it blows hot air and you cannot ...

...check your blower motor without spending to much money. First open your hood. Then run a wire from both your positive and negative battery terminals. Be careful not to touch the wires together and ...

...heater isn't putting out hot air check to see if there is plenty of antifreeze in radiator , may have a air bubble in system . change thermostat could be stuck open.see if both heater core ...

thing to check when cold air blows out the heater when you have the heat on. Good Luck Get the heater core flushed,and if there is still no heat ,check the valve that changes the heat from hot to cold

...Check the hoses to and from the heater core. If one is hot and one is cold then either the shut-off valve to the heater core is defective or the heater core is plugged. the heater blows air that is ...

...Check the 2 heater core tubes at the firewall. If they are not getting hot then the heater core is plugged up. Try to flush and fill the cooling system. Check the blend doors to make sure that they ...

heater core only. check antifreeze fluid level. only put in straight antifreeze, do not mix. most people do not know what mixture should be, so be safe and add straight, it will not hurt it, i run 100

...check radiator hoses and heater core hoses all hoses should be hot to touch if not thermostat sticking open replace thermostat and radiator pressure cap.if radiator hoses hot but one of heater core ...