2003 GMC Yukon "rear vents hot" Questions

driver side hot air , pass and rear cold air The driver side is the only vent blowing hot air , the defrost and passenger and rear all blow cold air . baffle doors in ductwork stuck in position..

...c blowing hot air through the vents and defroster and rear a/c starts cool then gets warm Low on refrigerant , A/C compressor , rear expansion valve . You best bet is take it to a qualified repair ...

...rear vents only when the ac is on. front vents blow cold. try cheking the heater hoses located on the fire wall there are two of them if they are hard then they need to be replaced if they are soft ...

...rear vents but the front only blows hot air you may have a bad temp door actuator in the dash, it may be stuck on hot and not able to move to cold air. However if you are low on freon with a truck ...

vents -driver side thermostat will not control temperature. After 15 minutes, driver side air blows hot. Passenger side and rear a/c works fine. you need to change drivers side temp door actuator then

...rear is working well and front is not I would suspect a blend door or actuator issue in the front.Double check and see if you can hear anything moving when you are adjusting temperature from hot to ...

...rear vents only blow cold air when the heat is turned on (with the re-circulation on or off). Are there two heater cores too? If not, is there a way to direct some of the hot air in the front to the ...

heater blow cold air in front hot air in rear Cannot get hot air to blow out through the front vents, but it blows hot air through the rear vents. could be blend doors in heating duct work.

...rear vents but not out of the front vents. Why could thi be? I changed the thermostat and replaced the coolant but when the heater is on hot air only blows out of the rear vents. Cold air still blows ...

...rear vents blow hot air Could be a blockage in the lines to the rear unit.Might be low on freon too.  Or a blend door problem.Can you check under the floor and see if one of the lines is cold