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George H.
George H., ASE Certified Technician
Category: Chevy
Satisfied Customers: 18390
Experience:  GM Tech ASE Master Tech 15+ years
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Don. I have 1994 full size chevy blazer and my blower fan

Customer Question

Hi Don. I have 1994 full size chevy blazer and my blower fan does not work on high. It works on low, low/med and med/high what is my problem.
Submitted: 1 year ago.
Category: Chevy
Expert:  George H. replied 1 year ago.
Hello I will help you with your question,
You have three speed relays and I suspect it is the high blower relay that has failed. All three relays are the same so you can swap them around and see if you are then missing one of the lower speeds. If you are then that was the high speed relay that is the problem.
https://dl.dropboxusercontent.com/u/26725849/relaym.pdf
Copy and paste that link into a new browser tab to see the location of the relays. Please let me know what you find
Thank you