GM Truck Club
THE PREMIER CHEVY TRUCK & SUV FORUM
Founded in 2004 ~ We're the #1 Chevy Truck & SUV Forum.
Silverado & Sierra | Tahoe & Yukon | Suburban & Yukon XL | SUV & CROSSOVER
Results 1 to 3 of 3
  1. #1

    Default Water Pump - Fan Clutch Tip

    First of all, thanks to all who have posted on this forum - I purchased a suburban this past summer and have used the info here for numerous projects/maintenance.

    My suburban - 1999 K1500 with the 350

    Todays project was replacing the water pump. I usually try to search this forum and read through the manual prior to starting. The biggest challenge for replacing the water pump seems to be the fan clutch nut.

    After unsuccessfully trying three sets of tools from Autozone and having multiple employees state the nut is reverse thread, here's what I found:
    (I apologize if this is has been posted before and I didn't see it)

    The nut on my '99 is NOT reverse thread - it is threaded like any other normal nut/bolt (I found this out after using multiple tools, a cheater bar, and a big hammer - after getting nowhere I tried the other direction for giggles and wouldn't you know, it loosened right up So the nut does not get tight in the same direction as the fan blades spin - which I guess is not the normal.

    Napa had the correct tool for the job - its new part # is 41570 (the "loan-a-tool" one I got was part #62331, but has been changed to the above #)

    The fan clutch nut size is 36mm - the Napa tool has the correct wrench - I've read online where others have used an adjustable wrench with a pipe cheater and a hammer, but the Napa tool is works really slick (and free).

    The rest of the job is a piece of cake.
    Hope this helps and saves some time.

  2. #2

    Default

    For my 93, I just removed the 4 small nuts that hold the fan clutch to the pully.

  3. #3

    Default

    Thanks for the tip I'm sure this subject will come up again sometime soon.

Similar Threads

  1. water pump
    By 250rman79 in forum General Chevy & GM Tech Questions
    Replies: 1
    Last: 10-31-2010, 03:43 PM
  2. How to remove a water pump
    By BigFish in forum General Chevy & GM Tech Questions
    Replies: 4
    Last: 03-31-2010, 11:59 PM
  3. How do I get the fan off to replace water pump
    By phoebeisis in forum General Chevy & GM Tech Questions
    Replies: 7
    Last: 01-12-2010, 02:32 PM
  4. Truck water pump on a 454
    By larry kaas in forum GM Powertrain
    Replies: 0
    Last: 02-09-2009, 08:09 PM
  5. WTB: Water pump
    By 95burban in forum General Classifieds
    Replies: 0
    Last: 01-11-2009, 04:15 PM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •