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What is your question?
When truck is first started the a/c works fine. After about an hour you can feel a slow decline in the air coming out of the vents to the point that there is no air flow thru any vent with the blower running on high. Shut down a/c and restart does not change condition. Shut engine off for a while and a/c works and starts the decline in air flow all over again. I have tried resyncing, checking freon level, and a new control head with no change. The system is a dual contol auto climate control system. When air flow is gone the mode switch does not work either. After resyncing everything works as it should for about the hour stated then air flow decreases as described. HELP PLEASE
What makes this problem better or worse?
After an hour of operation
How long has your 2003 Chevrolet Avalanche 1500 had this problem?
About a month
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