NO HEAT

HUNTERMAGNUM

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I have heat in the front of my suburban for a few minuets and then it turns cold. Have heat in rear and works great all the time.
Is there a fix for this?
 

zora

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Can't tell what year you have but have you ever flushed the front core?
 

zora

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start the vehicle, set the temperature to hot, turn off the vehicle, pull the HVAC fuse, wait 3 minutes, reinstall the fuse, start the truck, do not touch the temperature controls, see if heat comes out after a few minutes.
Beyond that it could be the controller or the blend door actuator.
A tech tool would have to be used to determine the cause.
 
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