Mechanics

ON A THE AC COOLS THEN GOES TO WARM AND BACK TO COOL WHILE DRIVING. COULD YOU PLEASE GIVE AN IDEA WHAT COULD BE HAPPENING PLEASE?THANKS

2004 Chevrolet Suburban • 70,000 miles

The aair cools then goes warm and back to cool while driving. It's continuos while driving.
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Fease
October 12, 2011.



You could simply have a low charge of R-134a refrigerant. A reputable repair shop will attach a set of pressure gauges to check the state of charge.

Dan_K
Oct 12, 2011.