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Thread: Blower Resistor

  1. #1

    Default Blower Resistor

    so i replaced the blower resistor and the fan started working again but it only works on speeds 1-4 no on 5 what should i look at next

  2. #2


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    5.3 l 3.73 l G80

  3. #3

    Enkeiavalanche's Avatar
    Join Date
    Apr 2010
    Piermont,NY, back in Northern NJ now, But may be in IL soon....


    I would check the switch next or take the resistor back out and replug them in again
    08 Z71 Avalanche Mods to date: K&N CAI,Hellwig Swaybars and End Links, Corsa Sport Exhaust, Superchips Programer,IPCW LOF & 3rd brake light and tails, AMI Gas door,Show Hooks and Door locks, Enkei Wheels, with Pirelli tires, StreetScene Bowties, Grant Steering wheel,Muth signal mirrors,SSBC Big Brake kit,Huskyliner Mug gards,Floor mats and Hood shield, McGard Lug nuts and locks, Bedrug, Cervini's Ram Air hood,35watt HID Fog lights, Sylvania bulbs all around ZXE's Highs and Lows, WhiteNight Back up lights,Sirius and HD Radio, SnugTop sitting on deck now Got a Softopper on now,Tempress Boat Hatches.... New Bilstein shocks are on... New Mods coming soon..... X

  4. #4


    What year truck are we talking about? My 95 did the same thing. It had a separate fuse for the high speed. It really made me mad when I figured it out, I had been driving around without high speed for around a year.

    1995 Silverado 4x4
    6" BDS Suspension Lift-3" Body Lift-Add A Leaf in rear -Trailmaster SSV Shocks-Duel Steering Stabilizer Kit -AirAid Cold air intake-
    4.56 Gears with Detroit Auburn Locker-Pro-Comp Traction Bars with duel shocks-Aluminum Skid Plate Kit-38.5" x 16.5" Mickey Thompson Baja Claws-Constant Dropping fuel gauge

    2005 Yukon XL Jet Power Programmer, Bilstein Shocks, Bilstein rear springs, Helwig Anti-sway bars, EGR Window Visors, EGR Hood Shield, Denali Headlights, Headlight harness upgrade, GE NightHawk Bulbs, White Night Rear lighting system, Russell Braided SS brake lines, PowerStop Brake pads, PowerStop cross drilled and Slotted Rotors,
    2002 Silverado ext cab 2wd (Sold)
    2003 Yukon XL (Totaled)

  5. #5


    should i have disconnected the battery while i was doing all this or does it matter as long as the ac was turned off

  6. #6


    @Pikey is right, there is a separate fuse for the high (#5) speed; and it is "hot" all of the time.

    Disconnecting the battery is an option if you are not careful with the bare conductors.

    '09 Avalanche LTZ - Black
    '05 Envoy XL (sold)

  7. #7


    cool thanks what is the name on that fuse and i could have blown it when i was cutting the wires to the seven pin plug that was melted i thought that since it was off there would be no power till it sparked on me
    thank you everyone for all the help

  8. #8


    so i searched and found the 40 amp blower fuse under the hood. thank you guys o much for all of your help it worked AC fixed

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