Pretty ordinary drama free water pump replacement here. But hey I didn't forget the brake clean 🙂 So stick around and see what it take to change out the water pump and thermostat on this 2002 GMC 2500HD equipped with the fuel efficient 6.0 liter.
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46 thoughts on “Gmc / chevy truck 6.0, 5.3 4.8 water pump thermostat”
  1. Avataaar/Circle Created with python_avatars Blue Man says:

    Nicely done ! I missed why it was leaking in the first place. pump cracked ? weeping at gasket ? My 6.0 has about three drips a day from that area. cheers.

  2. Avataaar/Circle Created with python_avatars moejr14 says:

    What temp stat do y’all use?

  3. Avataaar/Circle Created with python_avatars roltyd22 says:

    Can you use the 1 piece thermostat and housing or the 2 seperate piece housing and thermostat?

  4. Avataaar/Circle Created with python_avatars Michael Haney says:

    Do we no longer use Permatex gasket sealer?

  5. Avataaar/Circle Created with python_avatars Richard Clark says:

    Have you ever had these water pumps whine and sound like an alternator? I am chasing an annoying one.

  6. Avataaar/Circle Created with python_avatars The MPrachtkl1 says:

    What is the yellow piece that you're using in the air tool to help clean up the surfaces along with your scraper tool? No need to put ANY rtv on the gaskets at all, including the metal type? I've had a fuck of a time getting mine to seal properly. Thanks for the video and hope to hear from you soon!

  7. Avataaar/Circle Created with python_avatars ken ensign says:

    now that was smart taking the tire off…will have to remember that next time working on my super duty..thanks

  8. Avataaar/Circle Created with python_avatars Victorious says:

    Super helpful video, found out exactly where that weep hole is and how to take those pins out of fan shroud, might even take up tip on using that lower hose for drain instead of messing with radiator… Thanks for the pro tips!

  9. Avataaar/Circle Created with python_avatars Dave lambardo says:

    Helpfull! I figured it was not too tough and video is faster than reading the service manual.
    My buddy showed me a long time ago about pulling tires off. We even use old steel wheels with no tires for long term projects so you can roll them if needed.
    Did my diesal injectors this summer. Built over top creeper for that project it's perrty handy to .

  10. Avataaar/Circle Created with python_avatars c love says:

    thank you for this video, very helpful.

  11. Avataaar/Circle Created with python_avatars James Barlow Jr. says:

    What kinda scraper did you use Bud? I cannot find a good one anywhere. Thanks 🤝

  12. Avataaar/Circle Created with python_avatars afmoa says:

    Wanted to see what it entailed. Should be an easy fix for me. Thanks for the video.

  13. Avataaar/Circle Created with python_avatars Michael Haney says:

    Every time a water pump pulley chimes. . . . an angel gets his ________

  14. Avataaar/Circle Created with python_avatars LTVoyager says:

    Any issue getting the air of of these systems? I just drained and flushed by 2015 1500HD 6.0L and I can’t get the lower radiator hose to warm up. The temp gauge shows normal and the upper radiator hose gets warm, but the lower hose stays cold. The hose to the coolant tank gets warm also, but it seems the t-stat isn’t opening. It seems odd it would stick at this point in time, unless it has been that way and I just didn’t know it. Seems though that the truck would overheat and that has never happened. However, I just drove the truck 15 miles and the lower radiator hose going to the t-stat housing was still stone cold. Very odd.

  15. Avataaar/Circle Created with python_avatars Al Stone says:

    Nice work

  16. Avataaar/Circle Created with python_avatars 30 Bird #861 says:

    Why is one click on our torque wrenches not enough? Ido the same thing, tighten all down until it clicks , then go back through for a second pass just double checking. Does everyone else do that too? Or just us with OCD?

  17. Avataaar/Circle Created with python_avatars Moron Nucleosus says:

    I always just let the air out of the tires by removing the valve core. Im 5'8" so I did it alot.

  18. Avataaar/Circle Created with python_avatars RuckusMaker says:

    Why I just got the recommendation for this channel I will never know, but glad I found it. Great content!

  19. Avataaar/Circle Created with python_avatars Doug Mottert says:

    I like the puppy

  20. Avataaar/Circle Created with python_avatars soma day says:

    Any thoughts using a temporary pressure cap with a tap for adding air on the coolant reservoir just after filling to check for leaks under pressure?

  21. Avataaar/Circle Created with python_avatars Dirty Doyle says:

    6.0 is the best small block chevy ever made

  22. Avataaar/Circle Created with python_avatars 7 ViewerLogic says:


  23. Avataaar/Circle Created with python_avatars feral kid says:

    I got an old screwdriver that I ground to a blunt point and bent into a hook. Makes pulling the stuck hoses easy.

  24. Avataaar/Circle Created with python_avatars feral kid says:

    Thanks again. I've changed other vehicle's but nice to see a pro do a particular vehicle first, makes you feel like you done it before. I got prices ranging from 575 to a thousand to have it done. Parts were under 200 including the fan clutch holder. There was room for a big crescent wrench but you need the clutch holding tool. I just stood on a hf folding step platform. Not bad at all. Hardest part was pulling those plastic clips on the radiator shroud.

  25. Avataaar/Circle Created with python_avatars Scott Frost says:

    This was an excellent how to. Great job.

  26. Avataaar/Circle Created with python_avatars Shandog says:


  27. Avataaar/Circle Created with python_avatars maxinumarmor says:

    LOL good thinking (tires off no leaning) I dont like doing it at the best of times.

  28. Avataaar/Circle Created with python_avatars Andrew Higdon says:

    So earlier today I watched this video, and didn’t realize that I would need any kind of specialty tool. I went online and found various kits, mostly just the wrench, and even then, they generally weren’t in stock. By this time it was 5:10 pm, a d I knew I had to rush if I was gonna catch the only place that seemed to have the pulley holder, and of course I read all kinds of makeshift rigs to get by if needed. I’m really good at breaking parts so i was trying to do the right thing and use the right tool, the whole deal. Got the anti-seize, blue RTV, hose removal tool (which was totally worth it. So simple, so effective), the red kool-aid coolant, and was ready to do the deed on my 2006 Suburban Z71. So I was having trouble sourcing the actual pulley holder tool, so I went to go look and was gonna check to see if my big crescent wrench would work instead of a 36mm wrench. I pop the hood, and this has been my parent’s since new, mind you, it’s got almost 180,000 miles, and is in great shape. So this whole fam clutch removal issue has soaked up over an hour, and now I realize with some shock, that there is no clutch fan at all! Just two electric fans. And the new pump I got with the optional preinstalled thermostat. So since there was no need to remove the shallower fan shroud, and no clutch fan to remove. I couldn’t believe how easy it was, I kept thinking I was being pranked. Remove air breather plenum- two 8mm band clamps, minimal tugging to remove the whole airbox apparatus. Then one large and two small hose clamps. The type on the bigger hose was a royal pain if you don’t have the right tool, and apparently those too are make believe since no one at any of the stores could help. I spent an hour on just that type of hose clamp while replacing a radiator on a Milan. If you get it right though, they click into an open position, and slip right off. And again, I spent more time on that one hose clamp replacement than the whole rest of the procedure. Thermostat was preinstalled, and South Main “bolts in place to hold he gaskets in place” trick worked great. Minimal old gasket to scrape. Hood up to hood down was about 90 minutes, with pretty laid back pace and just a little trouble figuring out the serpentine belt route, even though I took pictures. I still feel guilty because it was so easy, since I didn’t have to remove the shroud or the fan. Three hose clamps, six bolts, pop or scrape, the old gaskets off the block, put bolts in water pump, antiseize the bolt tips, slip it in, finger tight the bolts, torque to whatever, 30ish ft/lbs, replace hose clamps, curse the bigger one for fifteen minutes, replace air box, :top off coolant. Oh, and a big concrete mixing type black plastic tub caught all if the coolant , no mess at all. Burp radiator.done.

  29. Avataaar/Circle Created with python_avatars Carl Kraus says:

    Love the video. No Gasket Maker on the gaskets Huh? Yeah, I own a 2001 Jimmy 4.3 and I did the pump, hoses, thermo, radiator, heater core, and belt. I flushed and put in the green stuff. I don't trust dexcool. Had to change head gaskets on a 1999 Blazer because of that stuff. I've owned 3 different 4.3L. I like GM.

  30. Avataaar/Circle Created with python_avatars Andrew Higdon says:

    “Probably a million videos showing how to change a 6.0 water pump “. Yeah, but I sought out this one. And it all started more than a year ago with the Fusion/Milan vibration which turned out to be the transmission mount. Aces. All day long. Aces.

  31. Avataaar/Circle Created with python_avatars Carmelo Martinez says:

    Love your videos dude makes everything so easy thankyou

  32. Avataaar/Circle Created with python_avatars Scotty Comardelle says:

    Have a 1997 chevy with a 303 misfire code changed wires plugs cap rotor coil cant figure it out

  33. Avataaar/Circle Created with python_avatars Patrick Baitman says:

    Sheeba says "Nooooo" to Chevrolet!

  34. Avataaar/Circle Created with python_avatars mika chicha says:


  35. Avataaar/Circle Created with python_avatars vetman98 says:

    Thanks for the step by step. Starting on my 4.8L tomorrow.

  36. Avataaar/Circle Created with python_avatars Jim Clifford says:

    Those metal gaskets with the o-rings are junk. Even the OEM ones. 05 Tahoe, 5.3 and could never get them to stop leaking … until I used the paper gaskets.

  37. Avataaar/Circle Created with python_avatars Ian Frost says:

    I would advise to check or replace the belt tensioner and idler pulley as they got out.

  38. Avataaar/Circle Created with python_avatars John Sweenie says:

    No need to use gasket sealer?

  39. Avataaar/Circle Created with python_avatars Myron G Stevens jr says:

    Hey man I just watch your video on how to change water pump I change my water pump on my 04 chevy tahoe about six or seven months ago and now it's leaking again could it be parts issue I pick up water pump from autozone