2002 Chevy Trailblazer Cooling fan Clutch issue.
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Thread: 2002 Chevy Trailblazer Cooling fan Clutch issue.

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    felixm22's Avatar
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    2002 Chevy Trailblazer Cooling fan Clutch issue.

    Hey all. Last night when I was on my way to work my Trailblazer sounded like the fan clutch was stuck on the cooling fan. Today my wife and I were running errands and when we were on our way home the truck threw a check engine light. I found out that the clutch is not a simple mechanical clutch but an electro-viscous clutch controlled by the PCM. Does anyone know you these work? Is electricity applied to stiffen up the fluid or is it the opposite? I have not tried to move the fan with the truck being stone cold but with the truck off the fan is quite stiff to turn by hand. There is also a fuse for the fan and it is working. Please share any knowledge you may have. I'm also trying to find out what size the nut is on it, the largest wrench I have is 1-1/16" and it is not big enough.

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    Mike

    Some days I feel if I did not have bad luck I have no luck at all.
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    Electricity is applied to make the fan run closer to engine speed. There are kits to covert to electric fans if you want to go that route. I did on my Trailblazer SS and it was worth it but I was trying to squeak out every little bit of power.

    I don't remember the wrench size but a pipe wrench and a hammer will loosen it. They are not on very tight.
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    I have used a air hammer and blunt chisel with great sucess. A very good mechanic friend told me that is all he ever uses.
    Matt

    NRA Life Member

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    Quote Originally Posted by MFreund1 View Post
    I have used a air hammer and blunt chisel with great sucess. A very good mechanic friend told me that is all he ever uses.
    That works as well.
    1025r TLB w 60D MMM & Independent Lift
    SN 114287 Built April '13 received 8/21/13
    180 degree thermostat
    Omni Transformer w/ integrated weight bracket
    Single Point
    Ken's Bolt on hooks
    Artillian Forks (42")
    Full Compliment of Wheel Weights (340lbs)
    Custom Seat Springs

    Kubota 326H 72" deck ZTR

    Stihl MS361, FS250R

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    Captain Hook Kennyd's Avatar
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    Quote Originally Posted by felixm22 View Post

    Some days I feel if I did not have bad luck I have no luck at all.

    Geez Mike, that should read WEEKS in your case with all you've been through lately!
    Gizmo2 likes this.
    Kenny

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    Senior GTT Super Slacker Gizmo2's Avatar
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    Quote Originally Posted by Kennyd View Post
    Geez Mike, that should read WEEKS in your case with all you've been through lately!
    Good point and me thinks felixm22 needs a few hired hands.
    Keith

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    felixm22's Avatar
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    Ugh, I got the new fan clutch and the tool to remove it and I thought all would be good. No, no, my truck has over 20 trouble codes. Also the auto parts shops in WV can no longer clear them because some bureaucrat decided people need to pay for such a service. I doubt I will find a shop to clear the for free now.

    Anyone out there using an ODB2 scanner with their iPhone or iPad?


    Sent from my iPhone using Tapatalk
    John Deere 318, 50in deck, 54in blade w/ power angle

    Looking for JD Parts check here on JD's official parts website.

    Have no idea where to start with JD Parts check here for a how to.

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    OxPath's Avatar
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    I've haven't got any experience with the iPhone scanners, but I'd be willing to lend you my old-school scanner. I can send it by priority mail if you can wait until Friday or Saturday for it to arrive. You can send it back when you're finished using it. Just PM me your address if this works for you.
    Gizmo2 and dieselshadow like this.
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    felixm22's Avatar
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    Quote Originally Posted by OxPath View Post
    I've haven't got any experience with the iPhone scanners, but I'd be willing to lend you my old-school scanner. I can send it by priority mail if you can wait until Friday or Saturday for it to arrive. You can send it back when you're finished using it. Just PM me your address if this works for you.
    Out to a show but I'll pm you my address when I get home.


    Sent from my iPhone using Tapatalk
    John Deere 318, 50in deck, 54in blade w/ power angle

    Looking for JD Parts check here on JD's official parts website.

    Have no idea where to start with JD Parts check here for a how to.

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    OxPath's Avatar
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    It's in a box and awaiting your info. I'll post it first thing in the morning. I forgot to mention the rent. You'll find the scanner packed with a couple local newspapers. When you send it back, (there's no hurry so keep it as long as you need) pack the box with your local paper. We're good!
    Last edited by OxPath; 09-30-2014 at 06:43 PM. Reason: Added info
    - Phil -
    *Spinner Free* LT160 Garden Tractor
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    *Spinner Free* John Deere 26G Compact Excavator - 18" HD bucket - 30" ditching bucket - PA15B 12" planetary drive auger
    Ken's Bolt On Grab Hooks - Artillian 42" Forks - Edge Tamers

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