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  1. #1
    Newbie
    Join Date
    Oct 2008
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    South of Minneapolis> MN
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    2

    Default heater fan relay

    I have a 94 k2500 gmc suburban with the 454 and a/c. I am having a problem with my heater fan motor. The motor works fine but only on low or high. There are two medium settings where nothing happens anymore. As i go though the differnt positions i can hear a soft clicking coming from what appears to be four relays sitting on top of the heater ac unit under the dash. I have the glove box out. How do i isolate the relay? Are they all the same part? Can anyone help me? I have read the available posts and feel like I am close to a solution.

  2. #2

    Default

    i bet it is the resistor pack or switch that is the issue. the resistors control what speed the motro goes into...........mike
    Michael Collins
    1993 4X4 Suburban
    many other toys as well

  3. #3
    Moderator

    dwill3015's Avatar
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    Jan 2007
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    Yacolt, Washington
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    Default

    Check THIS THREAD out and it should give you some good info.
    Darcy
    Washington State
    2006 Silverado 2500HD LT3 4X4 CC SB Duramax LBZ
    Tuff Country 6" lift, 35" Toyo M/T's on 20" Ultra Peacemaker wheels, Quadzilla Stealth2 programmer, Diamond Eye 5" cat-back exhaust, factory Special order color Yellow.

  4. #4
    Legend unplugged's Avatar
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    Sep 2006
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    High Deserts of SoCal
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    Default

    Quote Originally Posted by dwill3015 View Post
    Check THIS THREAD out and it should give you some good info.
    Bravo. Not the most complete body of data, but very, very good. Thanks!
    There is no way to happiness....happiness is the way.:yipi:
    http://kx6ijq.blu.livefilestore.com/y1pcOFVNH4ix1hjyGUVyXK5LRfef7qSeWzlZDorpQhIEfkZ2ZA  _vXMYypuKMJFw671uF2ZPhjez_j-atRmcjM2zQKpQi1JSsB75/burb1.JPG
    High Desert SoCal
    93 K1500 burb (personal) 350 AT 3" Lift 250K+
    02 Honda Civic LX
    Looking for a 1990's Miata for an engine swap

  5. #5
    Newbie
    Join Date
    Oct 2008
    Location
    South of Minneapolis> MN
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    Default

    The resistor pack sounds like what was calling the relays. I work at a gm store so will check it out . Thanks/

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