What are the best GMC repair shops?
RepairPal Certified shops can diagnose and repair your 2006 GMC Sierra 2500 HD. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
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Thanks for advise. Still trying to solve problem though. Didn't mean to be rude.
Do you have auto or manual heat/AC?... See a button that says AUTO?