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2005 silverado dual climate control fan motor will not run..work fine

Customer Question
i have a 2005 silverado...
i have a 2005 silverado dual climate control fan motor will not run at full speed all the time. will work fine some times and other times will run slow speed
Submitted: 7 years ago.Category: Chevy
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Answered in 1 minute by:
8/15/2010
Chevy Mechanic: Dan, ASE Certified Technician replied 7 years ago
Dan
Dan, ASE Certified Technician
Category: Chevy
Satisfied Customers: 2,270
Experience: 20 Year Factory Trained Current GM Technician
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Hello JACUSTOMER-pjkvh9rh-,

Does this have and automatic unit. Digital display with an auto button?
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Customer reply replied 7 years ago
yes it does
Chevy Mechanic: Dan, ASE Certified Technician replied 7 years ago
The Blower control module ( blower motor resistor) is probably bad. Have done 3 of them this past week. If you have a volt meter I can tell you how to check to make sure the control unit is sending the proper signal to the blower module if you want to test it. Let me know.
Dan
Dan, ASE Certified Technician
Category: Chevy
Satisfied Customers: 2,270
Experience: 20 Year Factory Trained Current GM Technician
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