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Hollye Cunningham
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Hollye Cunningham New Member

Hollye Cunningham

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2016 suburban with rear air working (cold) and front air not (warm). Very strange, front air works great and is VERY cool when vehical is cool and sitting in the shade after not being driven over night, start it up and works like always. Park it and it sits out in the sun and vehicle is hot from the sun and start it up front air will not cool even though the rear air works fine and is VERY cool. It's like when out in the sun for hours and the vehicle is hot it creates some kind of pressure on the system that keeps the front air from getting coolant, or whatever, very strange. Have added some coolant and have the pressure needle in the first 1/3 part of the green zone on the dial. Front air went back to cool and worked when I was doing this but after I drove it around for a day or so stopped working again even though rear air will freeze your ass off. Put the coolant guage back on and needle is still in the lower third of the green zone. Leave it parked over night and the whole vehicle cools down front air cools like crazy again the next morning. Park it in the sun for three or four hours and front air will not cool again????? What do you think? Need help.  

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