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Ron
Ron, ASE Certified Technician
Category: Cadillac
Satisfied Customers: 33460
Experience:  34 year as an ASE Tech
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Cadillac Coupe Deville: , blower won't shut down. Bought

Customer Question

Hello, blower won't shut down. Bought new power module. Installed and no change. The lower digital left and right show the letter c. What do I try next?
Submitted: 1 year ago.
Category: Cadillac
Expert:  Ron replied 1 year ago.
Hello, my name is ***** ***** I am a professional here at Just Answer. I have noticed that your question was not getting a response and thought I would see if you still need help with this.I apologize for the delay and I hope I can still assist you with this here.
The problem you are describing is in most cases caused by a failing power module or an excessive draw from the blower motor which can take out the power module. See the test steps in the link below to determine if that is the case. Copy and paste the link to your browser to open and view it.
https://dl.dropboxusercontent.com/u/104923897/Control%20module%20Jun%2018.pdf
The code C in most cases indicates you have a problem with the BCM (body control module with a failing BCM as the most common cause. See the test steps in the link below to verify.
https://dl.dropboxusercontent.com/u/104923897/Code%20C%20Jun%2018.pdf