VEHICLES, CAMPERS, and BOATS > General Maintenance, How to/DIY projects

Duramax Water Pump Change

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Sammconn:
Installation is simple reverse of removal.


Top up bleed etc all the antifreeze.
Go for a good drive and get the coolant moving.
Likely need a top up.
And good to go.


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Sammconn:
Now. To be honest after fighting the good fight with this.
I think I’d take the stack every time.
There is just so little room to work otherwise.

Now Ken may disagree, and if it was for hire I may as well.

Knowing the tricks and path now it’s probably a 3-4 hour job with rads left in.
Add a couple hours to pull and reinstall stack.

Flyin6:
Oh you are so right about that T-stat pipe. I fought with that...and with the stack in there, making me have to a second wrist to get my hand in the right position.

Concur on removal of the stack for the novice...Just do it

And

Thank you, sir, for sharing and showing us why people like Ken are so necessary to fix the things we don't want to mess with!

KensAuto:
That pipe is the worst! You can lube it, silicone, dielectric, wheel grease, or oil and it doesn't change a thing! I've had them seal the first time and just 2 weeks ago took 3 tries... employee 1st, me 2nd and 3rd, even using a flat plastic pick on the top one to keep from cutting it.

I think pulling the stack is best if it needs cleaned but we leave it in to make money.

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