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Heater blower motor runs when key is switched on.....

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by eripley, Nov 22, 2003.

  1. eripley

    eripley 1/2 ton status

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    Heater blower motor runs when key is switched on and wont shut off. I think its just the fan and not heat. I dont have air conditioning. The motor runs on low speed no matter what. I cant for the life of me figure out why.
    Anyone seen this problem before?

    In the winter time this is not such a big deal but in the summer it might not be withstandable.

    Thanks in advance for any tips!
     
  2. Muddytazz

    Muddytazz 1 ton status

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    This is very normal, they came from the factory like that
     
  3. R72K5

    R72K5 Banned

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    yep, if its just lo med hi three settings then that is correct, normal, HD heater had an off position, but that is uncommon, other wise you have no off setting just like most of the rest of us /forums/images/graemlins/laugh.gif


    good luck
     
  4. eripley

    eripley 1/2 ton status

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    I feel stupid now for asking. But hey thats the only way to learn. /forums/images/graemlins/wink.gif /forums/images/graemlins/ignore.gif /forums/images/graemlins/k5.gif
     
  5. Muddytazz

    Muddytazz 1 ton status

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    No worries, I had the same question when I owned my first chevy, I didn't know then either. You'll learn around here, no question is a stupid question.
     
  6. HarryH3

    HarryH3 1 ton status Author

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    GM called it flow through ventilation. GM cars of that era (at least the ones with A/C) also had that "feature".
     
  7. R72K5

    R72K5 Banned

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    [ QUOTE ]
    GM called it flow through ventilation. GM cars of that era (at least the ones with A/C) also had that "feature".

    [/ QUOTE ]

    my 83 caprice does, and with a/c
    alot of the 70s and 80s cars ive had, also had this too


    my 83 k20 i just noticed today has off position, the truck is factory non-a/c, it has off and fan and hi, three positions total,
     
  8. bpiccioni

    bpiccioni 1/2 ton status

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    You could install a switch to manually control power to the blower motor...
     
  9. xnoahx

    xnoahx 1/2 ton status

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    thats what I did, but my switch stopped working all together and rather than try to figure it out I just rewired the fan.
     
  10. R72K5

    R72K5 Banned

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    why didnt you just replace the switch instead of cutting wires ?
     

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