Is there a coolant leak on a Duramax Diesel?

Currently, since December 2010 another supplement to the EGR cooler pressure tester adapter set, EN-48974-20, was shipped essential to dealers to diagnose EGR cooler engine coolant leaks on all 2010-2011 Duramax™ 6.6L engines equipped with multiple cooler EGR system.

Can a head gasket failure cause engine coolant loss?

The AERA Technical Committee offers the following information on engine coolant loss on 2002-2016 GM 6.6L Duramax diesel engines. It is important to note that not all instances of coolant loss on these engines is the result of head gasket failure.

Why are my head gaskets on my Duramax truck failing?

One of the common issues we see with the Duramax engines is head gasket failures. The gaskets in all years of 6.6 Duramax pickups are a multi-layer steel style gasket. Over time as the head/block surfaces warp and the strength of the head bolts weaken, the head can lift causing combustion pressure to go directly into the coolant system.

Is the coolant level on my Silverado Sierra low?

A Low Coolant message may be displayed on the Driver Information Center of some 2017-2018 Silverado and Sierra models equipped with the 6.6L Duramax diesel engine (RPO L5P). An inspection of the radiator surge tank may appear to show a low coolant condition.

What are the most common LLY Duramax engine problems?

The 6 Most Common LLY Duramax Problems. 1 1. LLY Bent Rods. While the LLY made competitive performance numbers back in 2004, the engine is certainly not competitive to the modern day diesels. 2 2. Head Gasket Failure – LLY Duramax. 3 3. EGR Valve Failure. 4 4. Glow Plug Failue – 2006 LLY Duramax. 5 5. Overheating in Pre-2006 Models. More items

Why does my water pump keep leaking coolant?

Coolant Leak at the Front-Center of your Car The water pump is comprised of multiple gaskets and seals that keep coolant contained and ensure that consistent flow of coolant is delivered from the radiator to the engine. Eventually, these gaskets and seals will wear out, dry up, crack or break entirely.

Why does my Chevy Silverado have a coolant leak?

2017 Silverado and Sierra models equipped with the 6.6L Duramax diesel engine (RPO L5P) may display a Driver Information Center low coolant message or may show coolant consumption or a coolant leak. These conditions may be due to cooling system leaks or an improper coolant fill procedure.

Where does the coolant go in a water pump?

1. Coolant Leak at the Front-Center of your Car. The water pump is comprised of multiple gaskets and seals that keep coolant contained and ensure that consistent flow of coolant is delivered from the radiator to the engine.

Where does the coolant leak from a water pump come from?

My leak appears to be coming off the back side of the pump housing, but originating above the area that i can see with a mirror. Surely somebody out there in cyberspace has seem the dark side of the moon behind the water pump and could direct me on this.

Where to check for coolant leak in diesel engine?

Check for coolant leaks at the welded flange on the Exhaust Gas Recirculation (EGR) coolant return pipe (Fig. 7) and coolant feed pipe. (Fig. 8) In addition, check the O-ring seal on the EGR coolant feed pipe for a coolant leak.

Are there any problems with the Duramax water pump?

This seems to be inherent of the factory water pump design. Overheating issues with the Duramax diesel seems to be a hit-or-miss problem; some owners experience it, while others never will. Regardless, it’s more common with the Duramax than other engines.

Are there any problems with the Commons 6.6L Duramax Diesel?

Common Problems with the 6.6L Duramax Diesel. The 6.6L Duramax has been in production since 2001 and has proved, on a large scale, to be a relatively reliable and durable platform. While various versions of the engine have surfaced over the years, all generations of the Duramax are based on the same foundation.

Are there any problems with the Duramax fuel filter?

The 2001 to 2004 LB7 fuel filter housings seem to be the most prone to problems. Water Pump Failure. Water pump failures for Duramax engine are somewhat common. It is not unlikely that a water pump will need to be replaced in the 80,000 – 100,000 mile range.

Where is the coolant sensor on a Duramax Diesel?

7) The horizontal line is a baffle inside the surge tank that keeps the coolant from sloshing inside the tank and tripping the coolant level sensor, which is located below the baffle. A full coolant level will show the coolant at the bottom of the radiator surge tank fill neck.

What kind of head gasket does a Duramax have?

The Duramax has a multi-layer steel head gasket. When they have issues, they do not typically smoke out the exhaust or get coolant into the cylinders. What happens is the head lifts a little during the compression stroke.

How much pressure should I put on my coolant tank?

The cooling system runs up to 15 lbs of pressure– and should release any pressure over that. The cap also is suppose to let air back into the system as it cools off. If the cap is stuck, it will cause a collapsed hose when cool. If any doubt replace the cap.

Why is my Duramax LBZ engine leaking fluid?

The cooler lines are responsible for circulating transmission coolant to keep the tranny from overheating which is important for reliability and longevity. The lines on the Duramax LBZ have a design fault at the “crimp” to where the crimp isn’t suitable enough to hold onto the line and prevent fluid from leaking.

What are the most common Duramax 6.6L engine problems?

5 Most Common LBZ Duramax 6.6L Engine Problems. 1 1. LBZ Cracked Pistons. The LBZ is revered for its tune-only performance capabilities. With various upgrades, this engine is easily capable of 2 2. Duramax LBZ Water Pump Failure. 3 3. Glow Plug Failure – LBZ. 4 4. Allison 1000 Transmission Line Leaks. 5 5. Duramax EGR Problems.

What kind of warranty do GMC trucks have?

All 2018-2019 GMC vehicles come with a fully transferable, no-deductible, 5-year/60,000-mile (whichever comes first) Powertrain Limited Warranty. The 2500 and 3500 Series Heavy Duty (HD) pickups equipped with a 6.6L Duramax® Turbo Diesel Engine are covered for 5-years/100,000 miles, whichever comes first. See dealer for details.

What causes head gasket failure on LLY Duramax?

Head Gasket Failure – LLY Duramax The LLY has the largest turbo in it out of any other 6.6L Duramax variants. Outside of it being the largest turbo, it had the largest compressor wheel and the tallest exhaust vanes. The end result is having an extremely efficient and high-flowing turbocharger.

What’s the max weight towed with a 2002 Chevy 2500HD?

The weight distribution hitch limit is the truck’s rated bumper-pull towing capacity with a weight distribution system. The fifth wheel and gooseneck limit is probably 15,300.

Can you get an oil change on a Duramax?

Yes, you can do most of the maintenance yourself: oil changes, fuel filter changes, air filter, tire rotations, etc. The Duramax V8 holds 10 quarts of oil. The extra oil and the fuel filter add cost to the equation. Getting the oil change done at a dealership or a shop will run $100 at a minimum.

What kind of maintenance does a Duramax do?

Heavy duty trucks, especially turbo-diesels, are costly to maintain. Yes, you can do most of the maintenance yourself: oil changes, fuel filter changes, air filter, tire rotations, etc. The Duramax V8 holds 10 quarts of oil. The extra oil and the fuel filter add cost to the equation.

What was the problem with my Chevy Silverado?

The computer scan confirmed the problem: two of the eight injectors were starting to fail. If the problem is left unattended, it will get worse and it may cause damage to the pistons and the engine itself. I made the difficult and costly decision to replace all eight injectors.

How long does it take to replace Duramax injectors?

The dealership estimates this job between 11-12 hours of labour. The injectors are underneath the engine’s valve covers. If two injectors failed, then it’s likely others will fail as well. It’s better to bite the bullet and replace all eight at once, and save of more labour costs.

Where does coolant leak on a Duramax diesel engine?

Coolant also may leak from the coolant hoses at the Emission Reduction Fluid Injector (DEF injector). (Fig. 10) The radiator surge tank uses two different radiator surge tank caps. The radiator surge tank cap that vents pressure in the event of excessive cooling system pressure is located on the lower outboard side of the radiator surge tank.

How can I tell if there is a coolant leak in my engine?

When diagnosing these conditions, be sure to complete the coolant system leak checks in the appropriate Service Information to verify there are no external leaks. It may take a few engine temperature cycles, from operating temperature to cold, for the coolant level to show a lower than normal level.

What causes low coolant level in radiator surge tank?

The low coolant level in the radiator surge tank may be due to the fill process at the assembly plant, which cannot purge all of the air from the cooling system and the surge tank. After the engine has been thermally cycled, air rises and causes the coolant to become lower than when initially filled. Coolant Levels

What kind of coolant does Chevy Silverado have?

I don’t know what to do. I have lost all respect for GM and their product. 2017 Silverado and Sierra models equipped with the 6.6L Duramax diesel engine (RPO L5P) may display a Driver Information Center low coolant message or may show coolant consumption or a coolant leak.

What causes antifreeze to leak from the radiator?

Antifreeze Leak Causes. Listed here are common causes for your coolant to be leaking: If the radiator cap doesn’t no longer fits as it initially did or if it is weak and wore out it can cause loss of your systems coolant by way of the overflow tube, and it will happen every time you run the engine very long.

How can you tell if your car coolant is leaking?

Another sign of a leak would be if your vehicles engine suddenly overheats, sometimes there can even be a coolant smell if it is leaking. Finding out the type of leak your coolant system has is not that difficult, however, locating it can be more of a challenge.

Can a overheating engine cause a coolant leak?

An overheating engine can cause more problems especially if you let it go too long and end end up cracking your block. Chances are you have either a radiator cap leak, internal coolant leak or an external coolant leak. The longer you wait the higher the coolant leak repair cost will be.

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