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Blower motor problem

Discussion in 'Truck & Equipment Repair' started by ahoron, Jan 5, 2009.

  1. ahoron

    ahoron Senior Member
    from here
    Messages: 422

    On my 2002 gmc sierra 1500 the blower motor will stay on full speed. Doesn't matter where you have it set. Even after you turn the truck off. The other controls still work. This had happened one time when the truck was new and just popped up again after the truck spent 3 weeks in the body shop.
     
  2. Capodosto

    Capodosto Member
    Messages: 30

    Blown resistor.
     
  3. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    Precisely.. or in full terminology, "blower motor resister".

    It's located in the bottom of the HVAC box right above where the passengers feet would be. Pull the HVAC box cover down and you see it protruding from the bottom of the box. Will be the only thing in that location with any kind of wire connector plugs on it. 10 minute job to change.

    While your in there take a good look at the connector plugs where they plug in to the blower resister. They like to melt the pins out of the plastic connector housing. Replacement pigtails are available from both GM and aftermarket.

    Be sure to take the old resistor with you when sourcing a replacement as theirs several different versions of it and they all look similar...but only one will fit
     
  4. traviswalker007

    traviswalker007 Senior Member
    Messages: 188

    update

    there is a updated resistor so make sure u get the new one. 85.00
     
  5. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    They've been updating them ever since the Silverado body style came out. :D
     
  6. ahoron

    ahoron Senior Member
    from here
    Messages: 422

    Do you know the updates part #??? thanks andy
     
  7. ahoron

    ahoron Senior Member
    from here
    Messages: 422

    Replaced resistor heat is fixed. thanks