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Blower motor not working

Discussion in 'General Chevy & GM Tech Questions' started by lancer, Jun 23, 2010.

  1. lancer

    lancer Epic Member 5+ Years 500 Posts ROTM Winner

    Hey guys i was in the truck this morning and had the ac on and the blower motor won't blow on #5 setting. it has the turn knob 0-5 on the fan speed. between 4-5 something clicks in the floor board of the passenger side but it won't blow any air on the 5 setting. anyone have any ideas. it doesn't work on defrost, ac, or vent. its like when you go to the 5 setting it just shuts off. any help would be great. this is the first problem i've ever had with this truck.............
     
  2. Loggerhead Mike

    Loggerhead Mike Rockstar 100 Posts

    first check the blwr fuse. ive seen several fuses half way melted and would cut off at number 5

    the most likely cause is your blower motor resistor shorted out. very common problem and very easy fix
     
  3. murdog94

    murdog94 Epic Member 5+ Years 5000 Posts

    I was thinking the same thing...
     
  4. Big75

    Big75 Rockstar 4 Years 500 Posts

    Aren't those switches variable contact? Couldn't it be gummed up in the switch itself?
     
  5. lancer

    lancer Epic Member 5+ Years 500 Posts ROTM Winner

    Thanks guys for the ideas, i haven't had a chance to look at it real close yet. My little girls getting sick on us but i plan on tearing into it this weekend. i hope its just a fuse, like i said this is the first ever problem i've had in 4 years with this truck.
     
  6. 38racn

    38racn Member

    Did you get it fixed yet? If so what was the problem? I've got a 2003 GMC 2500HD doing exactly the same thing, down to the click between 4&5.
    thanks,
    Tony
     
  7. murdog94

    murdog94 Epic Member 5+ Years 5000 Posts

    Your blower motor resistor is shorted out.. Most likely, since this is fairly common on these trucks and actually most cars they go out over time.
     
  8. Loggerhead Mike

    Loggerhead Mike Rockstar 100 Posts

    90% of the time when the resistor shorts out it will melt the ground or hot wire (sometimes both) . usually you can just take a quick look and see if thats your problem
     
  9. lancer

    lancer Epic Member 5+ Years 500 Posts ROTM Winner

    hey guys i still haven't got to this. (on stanby for work and have to be in work truck all week) would this fuse be in the fuses under the hook or in the cab?
     

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