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Feont heat works but rear heat just blowa cold air.

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  • 32 Answers

There must be a way to control rear heat and its turned down to cold. The vents are tied together but to seperate thermostats.

Posted on Nov 01, 2012

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Posted on Jan 02, 2017

fphandyworks
  • 56 Answers

SOURCE: Rear heat blows cold air

one of the second heater core lines is clogged.

Posted on Jan 05, 2009

  • 507 Answers

SOURCE: 2003 chevy tahoe no rear heat

I know the earlier tahoe's have two heater lines running from the engine compartment to the rear under the vechile. Those lines could be clogged or pinched shut. What you do is get two hose locking pliers. Go under your truck, they are two metal lines that turn into rubber and back into metal again farther down the line. First, checked for pinched lines. If none, find where the rubber hoses are, clamp them off, remove from metal lines and drain. Use garden hose to flush fresh water through. When water comes through at high pressure and pretty clear, it should be done. Reconnect hoses, top off radiator fluid and it should be fine.

Posted on Feb 21, 2009

roniecon
  • 6826 Answers

SOURCE: Rear heat works but rear air never gets cold. Front air works fin

Hello,I am Ron,I will try and help,,,If the front air works fine,then the expansion valve in the rear air unit needs replacing,If I can help any further,let me know...roniecon@gmail.com

Posted on Jul 21, 2009

  • 19 Answers

SOURCE: Rear air on a 2007 Explorer never gets cold, even

We had this problem on a 2004 Freestar, and the expansion valve was plugged next to the rear evaporator. The expansion valve allows the freon to flow through the evaporator and cool it. I replaced it and it works good.

Posted on Sep 08, 2009

Testimonial: "Thanks for the advice, I suspected that might be the cause, but not in a car this new. "

  • 85 Answers

SOURCE: front heat works, but rear blows cold air only

With your front heat working the most likely cause for the rear heat not to work is that there is an obstruction in the line that is preventing the warm coolant to get to the rear heater core or the rear heater core itself is plugged and not circulating. Another possible cause could be low coolant level where the system has enough coolant to provide the front system with enought warm coolant but not the rear system. Hope this helps

Posted on Dec 30, 2009

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