1987 Gmc Van Just Bought Fan Works On Low Medium Speed Put High Nothing Getting

1987 GMC VAN
80,000 MILES
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DOMINICANDOUG
  • MEMBER
  • 1 POST
i just bought van the fan works on low and medium speed but when i put fan on high speed nothing as it is getting cold i need the high speed what is the problem please
Nov 1, 2012 at 6:55 PM
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HMAC300
  • ✓ASE Certified Mechanic
  • 48,601 POSTS
  • ASE Certified Mechanic
check your blower relay it may not be sending power to blower for high. also check your fan switch
Nov 1, 2012 at 7:21 PM
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