Say Goodbye to Overheating: A Complete Guide to Replacing Your Duramax Water Pump (2006-2016)!

[@travishicks5521]

This should be the first video that pops up when you search this topic. Awesome video thank you. This is going to help a lot when I do this to my 2013 Denali soon

[@DIYDiesel]

Thank you! 🙏🏼🤘🏼

[@travishicks5521]

@@DIYDiesel does the 36mm socket for balancer have to be a 12 point or can it be a 6?

[@David-od9gb]

@@travishicks552112 point. Look at the bolt and you’ll see.

[@buscampers]

Thanks for this video. I just changed out the water pump, thermostats, pulleys, tensioner, coolant temp sensor and fan clutch in my 2010 Chevy Express cutaway w an LMM. I hope I dont have to touch a thing for another 120k miles because working on a van is tight.

[@WamBam-z6y]

Water pipe was actually pretty easy hardest part for me was the last bolt on the back of the water pump at the bottom..fan shroud bracket was in the way.

[@davidfait5152]

This wasnt too bad for me I just hoisted myself under my truck with a size 12 wrench and I was able to see it pretty good with a headlight

[@RogersAcres]

I agree

[@squarebodyseth5986]

Mine rounded, had to take the ac compressor bracket off and get 4 hands in there on a small saw.

[@kevinpriebe3811]

Great video made it super easy to do my water pump

[@DIYDiesel]

Awesome to hear! Thank you 🤘🏼

[@2a_TX_Duramax]

@DIYDiesel Can you please explain why you left the fan cage off or give me the link to the video you explain it in, I watched this one and the install video and it's not explained in either.

[@saltysteel3996]

Leaving it off will cause the fan to not flow enough air. Engine won't cool properly. It's annoying but don't delete it.

[@1kentucky100]

Happen to have a part number of the rubber hose you put on before installing the new pump?

[@DIYDiesel]

It came with the kit we just cut it off of the one that was in the kit as it is good for 2006-2016 that hose is basically universal, because they want you to cut it down for other models like this.

[@elagant2282]

great video helped a ton

[@RVRepairNut]

Great! Thanks for making this detailed one. Any idea about how many miles before these pumps typically start going out.

[@DIYDiesel]

For the 06+ it’s usually just a high mileage thing so around 250 is when you start to see some go. If they are 06 and below it’s just depends when it decides to go because they are not composite impellers

[@jasoncall5318]

150000 miles

[@DIYDiesel]

@@jasoncall5318 damn yours went out at 150

[@jdawg5960]

@@DIYDiesel 252,000 lol

[@sw1933]

238k on mine

[@sergduce]

Hey I've just installed my water pump as well, but I used gasket maker silicone and the metal gasket. Do you think that will be a problem with leaking??

[@DIYDiesel]

I’m not a fan of gasket maker in that spot coolant is some nasty stuff. Only time will tell really, but as long as you did it right I don’t really see an issue with it.

[@sergduce]

Damn.. ok, ya I don't want to risk it. I. Going to remove and replace with new gasket

[@sergduce]

Thanks for responding brotha! By the way great videos you put out.. very informative 👏

[@DIYDiesel]

@@sergduce appreciate that! 🙏 it’s 100% up to you Permatex says it is resistant to coolant, and ATF some of the worse fluids there are, but I have seen it leak before. I wouldn’t recommend it, but according to there specs it’s rated for it.

[@TheBSofLVP]

Thank you guys!

[@DIYDiesel]

🤘 thank you for the support!

[@bbsandtts]

Gotta love Wisconsin!!! That’s where I’m from

[@DIYDiesel]

Love/hate 🤣

[@dl6043]

What’s ur opinion on the dmaxstore water pump? I have one in my truck and it was a $300 POS went back to a stock ac Delco unit

[@cecilalee86]

What was wrong with it? I'm literally about to finish installing mine tomorrow ??

[@dl6043]

@@cecilalee86 started leaking after 3-5 thousand miles, pulled it all apart resealed everything again leaking again after about 7k miles. Was out of warranty by 2 weeks dmax store didn’t do anything for me stopped dealing with them altogether after being a longtime customer of theirs

[@cecilalee86]

@@dl6043 ahhh!! I put my truck back together today. Snapped the dowel pin on my crank shaft that goes to my harmonic balancer. I'm pissed!! When it rains it pours. This water pump job has definitely given me a lot of trouble. Before that I broke off the water pump stud in the block. Got that out had to order a new one got it in, installed then that dowel got me smh.

[@saltysteel3996]

​@@cecilalee86 XDP makes a pin kit for the crank and dampener. Easy job. Will never break or slip again. Don't even need the factory "pin" anymore, but the factory pin does keep the alignment easy while putting the XDP kit in. Once the XDP pin is done you won't need the factory pin anymore, but it doesn't hurt to leave the factory pin there if it's still good.

[@WarrenShams]

Can you elaborate why you decided to keep the fan shroud off? I've heard mix stories on having overheating issues afterwards with such a small diameter fan by itself

[@DIYDiesel]

That’s my bad I got side tracked on that. I’ll be making a podcast episode on that soon. To answer your question; The main part of the fan shroud is a top, and bottom piece. Some people remove the complete shroud, and I wouldn’t suggest that. As it diverts the air in the direction intended. The blades that we took off then separate that air before hitting the fan to disperse it evenly. Keeping that off is not going to cause any over heating issues, if you are light towing or daily driving. Even with heavy hauling I do from time to time 16k+ I have never seen any issues. It is way more beneficial for myself to have it off to make routine maintenance more simple. Now if you are towing daily, and hauling heavy loads I would suggest keeping it on, and I am talking heavy loads not simple 10k loads. Most people that say it’s there for a reason are the same ones that say anything other than stock components are bad for these trucks. I would keep it on hand, and see if you notice a difference. If you think you are hearing more than usual most certainly throw it back on. I hope my opinion on that helps a bit.

[@WarrenShams]

@@DIYDiesel Thanks for the response, I changed my water pump yesterday, I'm going to leave it off & see if there's any difference, We occasionally but not regularly tow more than 10k with our dump trailer, I've never seen my truck get hot if gets a little hot Ill throw it back on. I think everyone's experience changing the water pump is different. The hardest part of the job for me was removing the back nut on the waterpump to oil cooler, it rounded easy, after failing to air chisel it loose it turned it into a full day job, good thing I have a lbz engine tore down in my shop with spare parts, ended up cutting that pipe to remove the pump & pulled the oil cooler to change the water pipe. Not the most ideal, but sometimes you have to deal with these things when your working on 400k mile trucks. No more leaks! Thanks again for your opinion & advice in the video.

[@DIYDiesel]

@@WarrenShams I agree everyone seems to have different issues when it comes to this install. Glad you got it done and I could help a little bit! Hopefully the leaks stay away 👏🤘

[@squarebodyseth5986]

@@WarrenShams Your comment is deja vu to a T. 480k lly, doing all the same, hopefully will not be back in this area.

[@SteveNicholson-tk2se]

Wanted to ask you what you thought about fan shroud being deleted i think my truck comes up on temp quicker w it removed but hasnt creeped past 210 F. Yet in warm temps 60F. - 80F. Outside temps

[@FreddiePatino-t6l]

I liked this video helped me out wonderfully

[@DIYDiesel]

That’s awesome! Thanks for the compliment

[@LBZOverlander]

Need some cardboard in front of that radiator. Did you reuse the balancer bolt or use a new one? Nice vid!

[@DIYDiesel]

We opted to re use it. I would suggest going with an arp one

[@saltysteel3996]

It's a one time use only. Never re-use the old one. Also need to add the XDP harmonic dampener pin kit. The factory crankshaft pin is extremely failure prone and when the dampener slips your crank will snap in half.

[@GotMyChevy]

@@saltysteel3996I just spoke to XDP sales on the phone. As of right now, that XDP pin kit is on back order to the date December 31, 9999. No lie or exaggeration. XDP said the company that makes the jig is playing games with them on production and they’re at the mercy of the manufacturer. “Intergalactic back-order” was his exact phrase.

[@mattbuchholz7781]

​@@GotMyChevy That's too bad. I was wondering why no one had stock. CR2 Fabrication makes their version that I just bought.

[@zub2332]

My name is Andrey, I'm from Russia.., your video is very useful for me and my duramax, tell me, can a pump malfunction be the cause of oil getting into the coolant?, liquid gets into the oil, there is no gas pressure in the expansion tank..

[@robertmedina6875]

Ya Bro is a power lifter! Impressive! Great video!

[@Reaglesracing44_]

my 2011 lml goes past 210-220 when pulling my camper up hills. it’s got a new radiator,fan and clutch thermostats fan shroud and coolant. i have 180k miles any ideas??

[@DIYDiesel]

What are you monitoring it with? Also 210 is normal when climbing a grade(especially in summer), but when you are climbing a grade you want to be climbing in 5th max don’t climb a hill in 6th down shift before you hit the hills to 5th and see what that improves.

[@Reaglesracing44_]

@@DIYDiesel stock gauges. it will go to 220 climbing hills but only when towing

[@claud1542]

Where is your shop located? i wanting to get some work done and looking for a good mechanic.

[@CBR600RR05]

Good info thanks for the video

[@ClayVanGieson]

Good Video! How long did this take to do? Local shop quoted me $1,800 for OEM pump and Thermostats. I can get the DMAX store pump for $250 and thermostats off amazon for $35. Let me know your thoughts. Thanks

[@DIYDiesel]

Take out filming with some bull shitting and some lunch 4hrs

[@Bsetzd]

You guys should have re pinned the harmonic balancer xdp diesel makes a great die an pin kit. To fix the shearing factory weak ass pin. To save the crank from braking. Just did my LBZ.

[@mattbuchholz7781]

I just did this to mine. XDP was out of stock. CR2 Fabrication mfgs a version. Only one that had stock!

[@kevinkaiser9753]

how many hours did this take you?

[@DIYDiesel]

Took us about 4hrs with two people I’d say 4-6 alone

[@williamwallace4879]

Excellent video

[@SteveNicholson-tk2se]

Hey did u ever end up leaving the fan shroud off on the paperweight duramax? Wanted to ask if u moticed any better cooling w it in place. I have 08 LMM duramax and wanted to keep mine off after my waterpump job. What is your input on the matter? Notice any difference? North Maine Steve

[@SteveNicholson-tk2se]

I seriously hate that dammn fan shroud and want to leave it off but i dont wanna lessen the cooling ability or have it affect air conditioner cooling or intercooler functioning.? Just wanted your opinion and what you guys do on your personal trucks. Mine is very similar to a LBZ platform but is 08 LMM

[@EdgarGarcia-lh5tr]

I'm gonna leave mines off , personally I feel like to much stuff there actually blocking it from cooling no way for air to get in and out , unlike the newer trucks with very ,very big front ends that cool much faster

[@kolby3601]

Love the videos! When is the rocker video coming?

[@DIYDiesel]

Hopefully I will get the axle thrown back together here shortly have to unbury the leaf springs out of the snow and then I can get started on that! Leafy springs should get thrown on in one of the next few weeks here

[@josephfiandaca967]

Awesome video! Curious to what’s the point of marking the harmonic balancer bolt if you’re torquing it to 260ft/lbs? I will be doing this job myself soon, thank you!

[@DIYDiesel]

Your just supposed to technically torque mark all bolt you torque most people just don’t do it. Edit: and thank you!

[@erictindall7502]

Could you link the hot pipes you’re recommending? Didn’t realize there was a design issue with stock.

[@DIYDiesel]

Yes I can

[@DIYDiesel]

Link is up 👍

[@JoseClarke-e7h]

What if you didn't put that stop plate on the transmission and still took balancer off and on

[@claud1542]

where are you located?

[@erictindall7502]

Great video. Thanks for sharing. Have a question though. When you were saying it’s a good time to replace the fan clutch did you mean the fan pulley? PN 1265313? Thanks again

[@DIYDiesel]

So I ment to say both fan clutch an pully it’s worth it to do right now since everything is apart

[@erictindall7502]

@@DIYDiesel That’s expensive. I think. If I’m looking at the parts correctly each are over $200. My truck’s got 300k on it and weeping coolant from the water pump. Not good. Thanks so much for the video.

[@DIYDiesel]

@@erictindall7502 ya you don’t have to do it at all it’s just something I’d recommend. We didn’t do it to this truck.

[@alexanderwilson2014]

That harmonic balancer bolt is torque to yield you must replace it if it’s removed.

[@joshuabonagofsky4449]

How the heck do you pull out that harness plug next to the engine fan clutch

[@GotMyChevy]

Completely remove the clutch bracket. Take a right angle pick and gently insert on engine side of plug clip and apply light pressure. That’s how I got it off.

[@dirtymaxandy4205]

How much coolant do you lose when doing this job?

[@gabrieltinajero8388]

You got way bigger problems than to worry about the amount of coolant you gonna lose doing this buddy

[@beaupeden5354]

Anyone who watches this video please replace your crank bolt/harmonic balancer bolt when you do this job. It’s a one time use bolt. Any bolt with that torque spec should be replaced. Last thing you want to happen is for this bolt to back off over time. Internal gears for oil pump and timing gear will shear off the alignment pins on the crank and spin on the crank and your engine will be junk all because you didn’t spend an extra $50 for a new bolt. This is why everyone believes you need to key the crank when in reality the torque on the crank bolt is what holds all the gears in time.

[@paulm5871]

Yup!! And from what I read, it is best to lubricate the bolt and torque it to 74ft lbs. And then an additional 105 degrees which would equate to 325 to 390 ft lbs. Not the 260 ft lbs these guys claim.

[@michaellevenduski7263]

How did u know yur pump was bad, my pump is good but I have a drip, so hard to tell where its coming from. I hate to do this whole job if its a o ring on that uper pain in azz pipe u tried getting off

[@DIYDiesel]

I just basically followed it all the way back to the weep hole on the pump

[@davelosonczy1537]

Ty

[@DIYDiesel]

🤘🏼

[@rattletrap5018]

Love your videos, just finished taking my water pump out right now, should there be a tiny bit of oil on the gear side of water pump? I’m assuming that’s self explanatory, but don’t want over think anything. Lol

[@DIYDiesel]

Yes that is normal the O ring seals the oil in, and the coolant is pumped along the side and back of the block. I appreciate the compliment & support! 🤘🏼

[@connorkurtz01]

I guess I'm just unlucky, ive cut 2 orings putting that coolant pipe back in

[@saltysteel3996]

I know it's annoying but never delete the fan shroud.

[@biltdmax6249]

No wonder why she was warm

[@CheapRidesAutoSales]

Thats not the fan shroud, that is just a stator.

[@epyoncat]

Wagler makes a billet water pump

[@DIYDiesel]

Ya internals only though not a complete pump. Great options for those looking to push high horsepower

[@jasoncall5318]

Wagner water pump are 850.00.

[@DIYDiesel]

@@jasoncall5318 do you have one? I’d so what’s your thoughts on it?

[@jorgemaldonado1041]

​@@DIYDieselHow do you know when to change the water pump? Water is likely to enter the engine?

[@saltysteel3996]

Wagler isn't available anymore.

[@TonyGragg]

That's bull it's totally different than a 2015 or a 2016.

[@CalebGibbsAvenue]

This should be the first video that pops up when you think about buying a Dermax the vary name is a nonsensical word.

[@CalebGibbsAvenue]

I used to like them till now.

[@CalebGibbsAvenue]

Buy a Dodge is what I'm thinking. real Thoughts.

[@saltysteel3996]

​@@CalebGibbsAvenue Buy a Dodge and replace the transmissions as often as Dmax water pumps. No thanks.

[@CalebGibbsAvenue]

@saltysteel3996 I agree