Why does my a/c heat make a strange warbling noise when I have switch on defrost

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Sharett has replaced air compressor two times, replaced Orpheus (not sure of the spelling) the mechanics at Sharett said they was clueless to What's causing the noise but they claimed another pontiac solstice was Making the exact same noise as mine.... Any ideas what's causing this? Thx, Randy

Randy2747 in Astoria NY

Apr 25, 2014

What are the best Pontiac repair shops?

RepairPal Certified shops can diagnose and repair your 2009 Pontiac Solstice. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.

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What is your question?

Why does my a/c heat make a strange warbling noise when I have switch on defrost

What is your question?

Randy2747 in Astoria NY

Apr 25, 2014

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What are the best Pontiac repair shops?

RepairPal Certified shops can diagnose and repair your 2009 Pontiac Solstice. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.