What should I do to my Duramax water pump?

Once you get the fan and cage out of the way its no different then the older duramax’s. Going by the book GM says to pull the starter and install the flywheel holding tool for breaking the balancer bolt loose and tightening it. This is where a lot of the excess time comes in.

What do you need to replace a Chevy water pump?

Here is the stuff you will need. Water pump: NAPA PN: WP58595 You dont have to buy a NAPA one but your local autoparts store can cross this number. Fan Clutch service tools. you will need to 47mm wrench, and the holder with pins.

How long is the water pump on a GM Truck?

I want to smack the GM engineer in the head who came up with that fan shroud design on the 2006+ trucks. That thing is the devil. Click to expand… Id rather punch the guy who clocked the one water pump housing fastener behind the balancer. Water pump would be a two hour job at most if it had been designed just a hair differently.

Why do I need to replace my water pump?

Because one of the mounting nuts for the pump got put behind the harmonic balancer so you have to remove the balancer. people can bitch all they want but the bottom line is that some engineer got a vacation to hawaii for doing that, and you didnt. Now many of you who have done it may be saying an hour?

When to replace a Duramax water pump seal?

An overnight shutdown in cool weather should result in the upper radiator hose having little to no residual pressure. If the root cause of a water pump seal leak is due to overpressure, simply replacing the water pump will just buy you a little time.

Is the water pump on my 2001 GMC LB7 Duramax leaking?

The water pump on my 2001 GMC LB7 Duramax had been leaking for some time – we’ll discuss the exact symptoms in a moment. I knew the pump had to be replaced, so I began accumulating the information I needed to do the job correctly. I wanted to know what parts were preferred and which ones should be avoided.

What makes up a Duramax water pump cartridge?

As the lead-in photo and the above photos illustrate, the water pump actually consists of two primary components – the cartridge that includes the impeller and drive gear, and the outer housing that routes coolant both coming and going.

Do you have to pull starter on GM water pump?

Going by the book GM says to pull the starter and install the flywheel holding tool for breaking the balancer bolt loose and tightening it. This is where a lot of the excess time comes in. If you get the Lisle tool kit you can shave off an hour or better right there by not having to pull the starter.

What are the symptoms of a water pump failure?

Symptoms of water pump failure include leaking coolant, low coolant warning, engine overheating and a high-pitched whining noise near the water pump. Watch our video to see how to completely replace your water pump and restore your vehicle to normal working conditions. Loading…

When did GMC water pump replacement come out?

1998 to 2002 Chevy or GMC Water Pump Replacement. – YouTube If playback doesn’t begin shortly, try restarting your device. Videos you watch may be added to the TV’s watch history and influence TV recommendations. To avoid this, cancel and sign in to YouTube on your computer.

How long does it take to fix a water pump?

Alldata says 5.9 hours. Mitchell’s says 7.5 hours. Preparing correctly, it can be done in 4 hours. Dealer quote will most likely land in the $1100 parts and labor.

Why is my Duramax water pump leaking coolant?

The water pump’s coolant-side seal is there to contain this pressure against a spinning shaft. Over time, this seal will wear until it begins to leak coolant. That’s your cue for a need to install a new pump.

Alldata says 5.9 hours. Mitchell’s says 7.5 hours. Preparing correctly, it can be done in 4 hours. Dealer quote will most likely land in the $1100 parts and labor.

When was the original Duramax water pump removed from my truck?

This photo shows the original 2001 model year water pump that was removed from my truck in October 2016. You can clearly see evidence of heat being used on the gear hub and heat-treatment having been applied to the gear teeth. In addition, the photo at the top of the page is a photo I took in March of 2001 at the DMAX engine plant in Moraine, Ohio.

How to replace a water pump in 1 HR?

Flywheel hold tool whether it is the Lisle 22100 (comes with 36mm socket), the factory tool, or a socket with an extension that you stick onto a torque converter bolt. More on this later. HOW TO DO IT!!! 1. Get all of the parts and tools around. 2. Get a reason to do it in 1 hr 3. Get some liquid for of energy if needed. 4.

How do you lock a GMC water pump?

Now there are two ways to lock your flywheel this way. You can use the factory flywheel hold tool, J-44643, or you can use a 15mm socket and extension on one of the torque converter bolts, then when you rotate the crank it will contact the bellhousing and hold the flywheel.

What happens when you replace a water pump?

Initially you could just smell it, but eventually it leaked enough to leave some Dexcool on the ground. The old one had a rubber squeak when turned indicating the seal was failing. My replacement pump came with an o-ring to seal the housing to the motor, but no o-ring for the pump to the housing.

What kind of water pump does a Duramax use?

And thanks to Merchant Automotive’s water pump kit, not only was the owner able to start over with a genuine AC Delco unit, but the new pump was modified to hold up to elevated rpm and higher horsepower. If you plan to keep the water pump alive in your modified Duramax, look no further than Merchant Automotive’s TIG-welded unit.

How does Bosie seal a Duramax water pump?

For the ultimate seal, Bosie combined the supplied water pump outlet gasket with a coat of RTV silicone. In addition to ensuring a leak-free seal, the use of silicone helps hold the gasket in place while the pump is being installed.

What kind of water pump does a GM LLY use?

GM used cast-iron impeller water pumps from ’01 to ’06, but somewhere in the early to mid 2006 model year switched over to the plastic units (note: some late model LLY engines were equipped with plastic impeller pumps). Merchant Automotive also supplies the three seals and outlet gasket needed to install its water pump.

How to replace the Waterpump on a Duramax Diesel?

Use the nippers or the pin pliers for the pins. Unhook the A/C line from the shroud clip. Remove fan shroud. 6) Install the cardboard, plywood or sheet metal over the engine-side of the radiator. If you dont do this step, you had better be EXTREMELY careful from now on.