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Chevrolet Silverado z71: My dad has a 2007 Chevy z71. He blower…

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My dad has a 2007...
My dad has a 2007 Chevy z71. He blower on his av wouldn't come on. He pulled the fuses to check them and they were fine. He put the fuses back and now the blower won't turn off. He had to unhook the battery
Submitted: 3 years ago.Category: Chevy
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Answered in 23 minutes by:
6/28/2015
Chevy Mechanic: George H., ASE Certified Technician replied 3 years ago
George H.
George H., ASE Certified Technician
Category: Chevy
Satisfied Customers: 19,344
Experience: GM Tech ASE Master Tech 15+ years
Verified
Hello I will help you with your question, This sounds like the blower speed control is what has failed, they can be open one minute and shorted the next. Do you have a voltmeter or 12 volt testlight to check the circuit if I guide you?
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