Question about 1999 GMC Suburban
This happens on vehicles that are a few years old you just have to deal with it.
Posted on May 03, 2013
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Posted on Jan 02, 2017
SOURCE: heeter is blowing cold air
Okay... First off I am no pro on fixing cars, but I did have this same problem. What I had to do is drain the radiator completely, then use prestone radiator flush to totally clean out the radiator. Once this is done go ahead and refill it with fresh radiator fluid. ONE BIG THING.... Do not replace it with DEXCOOL! This is a reddish orange color coolant, and is what caused you and me the problem to begin with. Make sure you use green coolant and mix it 50/50 or buy the premixed stuff. Like I said, I am no pro so I had to look up exactly how to do this. It took me around an hour and a half. Here are the instructions I used.
http://autorepair.about.com/od/regularmaintenance/ss/coolant_flush.htm Hopefully this helps. E-mail me at firstname.lastname@example.org and tell me if this worked for you as it did for me!
Posted on Dec 16, 2008
Is it a new vehicle? I had a new vehicle that had the same problem. Answer was that the holes weren't punched out of the vent.
Posted on May 23, 2009
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