Heat isn't blowing warm air. I have the dual climate controls for my heater. First it it stopped blowing warm air out on the driver side but was still blowing warm air out on the passenger side. Now it doesn't blow warm air at all just cold air.
Common Jeep problem. Blend doors are either jammed or broken. Dashboard removal is require to repair.
SOURCE: Heater blows cold on one side of dual system.
it is probably the actuator located on the heater box just above the gas pedal,. it can be done just takes a little time
SOURCE: heat works on driver side, passenger side blows cold air.
Did you check your coolant level or was it low and you added to it at some point? If so the system my need to be bleed or worst case the thermostat is going bad.
SOURCE: Impala has dual climate control. AC blows cold on
with a dual climate control system, it is imperative for a proper refrigerant charge to be maintained. the symptom you describe is a possible indicator of low charge on the system. the ac evaporator core is closest to the right side of vehicle thereby making air feel cooler on that side, on the left side of the vehicle the cooled air has farther to travel and warms up from cabin air before it discharged from the vents. this is the most probable issue for your vehicle...however if the charge is accurate, the issue would be more so in the air temperature doors which is located deep inside the dash...i hope this helps...good luck!
SOURCE: 2004 chevy tahoe, dual climate control, blowing different temps
Its more then likely the temp door broken or temp door motor broken/stuck. There is 2-3 of these motors under the dash on the side of the evap/heater core box. Some require extensive labor to replace, good luck
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