Where does coolant go in a Duramax Diesel?

If it can be determined the coolant loss is from the driver’s side (engine right side) of the engine, the following information should be considered. Leaks from the exhaust gas recirculation (EGR) cooler may allow coolant to pass through the exhaust system and enter the combustion chambers on the right bank cylinders.

Are there any problems with DEX-COOL coolant?

DEX-COOL specifically has caused controversy. Litigation has linked it with intake manifold gasket failures in General Motors’ (GM’s) 3.1L and 3.4L engines, and with other failures in 3.8L and 4.3L engines.

How much does DEX COOL coolant cost at wallymart?

Its only bad when its neglected like most cars on the road are. Wallymart has Dex-Cool in the 50/50 mix for around $12.00 a gallon and the posted Dex-Cool below which does not state 50/50 mix at about $14.00 a gallon.

What happens if you mix DEX COOL with OAT coolant?

According to the DEX-COOL manufacturer, “mixing a ‘green’ [non-OAT] coolant with DEX-COOL reduces the batch’s change interval to 2 years or 30,000 miles, but will otherwise cause no damage to the engine”. [24]

How much horsepower does a Duramax Diesel have?

Today, the Duramax makes nearly 400 horsepower and over 750 lb-ft of torque while reducing emissions considerably over previous generations. The chart below follows the progression of the Duramax diesel, from the first LB7 to the more recent LML.

Are there any problems with my 2003 Duramax?

Thaks for the help. injectors,water pump,headgaskets,injectors again,instrument cluster,steering shaft,pinion seal,and injectors again. I have on 03 with 66,000 on it and know problems. Friend of mine has 03 asmost same truck and know problems with 145,000 on it. Sure love mine. P:S Injectors should be warrantied to 200,000.

When did the Duramax Allison diesel engine come out?

The Duramax-Allison combination was first introduced for the 2001 model year, replacing the 440 lb-ft Detroit diesel with the 500 lb-ft LB7.

When to submit a repair order for a 2003 Duramax?

Claims with repair orders prior to May 25, 2004 must be submitted to the Service Contract provider. For 2003 vehicles covered by Vehicle Service Contracts, all eligible claims with repair orders on or after October 10, 2006 are covered by this special policy and must be submitted using the labor operation codes provided with this bulletin.

How long can a Duramax go out of service?

This special policy covers the condition described above for a period of 7 years or 200,000 miles (320,000 km), whichever occurs first, from the date the vehicle was originally placed in service, regardless of ownership. The repairs will be made at no charge to the customer.

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.

How much Dexcool to cool a Duramax V-8?

I quickly pulled out my Duramax Owners Manual and noted that the Cooling capacity was almost 25 quarts – thus needing at least 3 gals of DexCool to provide a 50/50 ratio. I showed it to the service manager and he said, “Well, I looked it up and my computer shows it takes only 21 quarts – and we generally have a 2 gal rule of thumb for V-8s.

What happens when you flush a Duramax truck?

But when doing a cooling system “flush” you are actually exchanging the coolant, typically with a machine that puts new coolant (already mixed 50/50) into the system as the old is leaving. Duramax trucks are particularly difficult to exchange due to the way the inlet and outlet work.

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.

What should I do if I lose coolant in my engine?

It is very important to note: If an investigation of loss of engine coolant leads to coolant found in one or multiple cylinders on the right bank, YOU MUST test the EGR cooler for leakage BEFORE attempting any engine repair. The cylinders affected with coolant will depend on which exhaust valves were open at the time of engine shutdown.

Can you put green antifreeze back in a Silverado?

I’ve heard that dexcool is very acidic and that the green antifreeze is the best to put back in. What are any of yalls experiences with this. I would never use the green. I gave up on green for any of my engines, commercial or personal, so long ago I can hardly remember using it.

What kind of coolant does a Silverado use?

My .02 is… my dad’s 2000 Silverado got a coolant flush a couple years ago; he was adamant that Dexcool NOT go back in. We flushed heater core, block, everything very well and put long life green Prestone back in.

Which is better for coolant flush Dexcool or green antifreeze?

Hey yall I’m getting ready to do a coolant flush on my truck and i wanted some opinions about what to go back with. I’ve heard that dexcool is very acidic and that the green antifreeze is the best to put back in. What are any of yalls experiences with this.

What kind of antifreeze should I use on my Duramax Diesel?

You should only use silicate-free anti-freeze in diesel coolant systems. There are many other brands besides GM DexCool if you don’t want to use that. If you have the radiator serviced as recommended it does not cause any problems.

Where is the low coolant message on a Duramax?

During PDI, coolant should be added to fill the upper chamber of the radiator surge tank. (Fig. 6) A coolant level that is low enough to turn on the Low Coolant message will be below the horizontal line across the radiator surge tank. (Fig.

What kind of antifreeze do I need for my Silverado?

But thats often costly. I have a 1997 silverado with a 350 vortec which I bought at 180,000 miles. The overflow jug and rad where full with almost black looking stuff (suppose to be dexcool) when i bought it, it was chunky and garbage.

Can you change engine oil in a Chevy Silverado 2001?

If you want to change engine oil, for instance, by yourself and save a couple of bucks you need to know how much this fluid engine oil is needed for Chevrolet Silverado 2001. If you fill engine or axles of your car with oil to the brim it may damage your vehicle engine or axles and void manufacturer warranty.

What causes a Duramax diesel engine to heat up?

When the engine is working hard, the turbocharger is drawing in a ton of air, and the restrictive stock turbo inlet tube can effectively choke the VGT turbocharger causing the compressor outlet temperature to skyrocket, heating up the intercooler, and ultimately raising the temperature of combustion and the coolant temp.

Are there any problems with the LLY Duramax?

In terms of LLY injector problems, GM had sorted out the internal failures with the 2004 ½ redesign, but the LLY Duramax would occasionally exhibit a trouble code for the injectors, but in most cases it turned out to be an issue with the injector harness rubbing through and causing a short or open in the wiring.

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.

Which is coolant bypass pipe for GM 6.6L Duramax?

The Dorman 902-901 Coolant Bypass Pipe for your 2001-2005 GM 6.6L Duramax is re-engineered to address the common failure points in the OE product. The Dorman Thermostat Bypass Pipe has improved durability and has been coated to resist corrosion. Maintain the steady flow of coolant and lessen the chances of overheating.

What are the features of a GM Duramax cooling system?

This radiator features a 2-3/4″ thick tube and fin core that delivers superior heat dissipation and improved coolant flow over the factory radiator for maximum cooling efficiency. The fabricated end tanks are manufactured out of 1/8″ aluminum plates for durability and strength.

What are the features of a Duramax 6.6L radiator?

The brushed aluminum finish and aFe POWER logo painted on the front give this radiator a custom look.Features:100% TIG-WeldedOversized Tube & Fin CoreBillet Aluminum Inlet & Outlet Install the Alliant Water Pump AP63563 to replace the defective water pump in your 2006-2014 GM 6.6L Duramax LBZ/LMM.

What’s the best way to refill a Duramax Diesel?

They finally found a hole in the radiator. Replaced it and haven’t lost coolant or smelled it since. Fill res up, let it drain down with truck off. Repeat until full. Then start the truck letting it idle with cap off to temp and filling as needed. Drive around for a few miles with the heat blasting and check and refill.

Is there pressure in the coolant reservoir even when engine is cold?

Pressure In Coolant Resovir, Even When Engine Is Cold??? Has anybody noticed pressure in the plastic jug coolant reservoir, even when the engine hasn’t been started for a few days?

Which is the best coolant for Nylon 6, 6?

One of the anti-corrosion components presented as sodium or Potassium 2-ethylhexanoate and ethylhexanoic acid is incompatible with nylon 6,6 and silicone rubber, and is a known plasticizer. Class action lawsuits were registered in several states, and in Canada, [20] to address some of these claims.

What kind of coolant should I use on my car?

Im 99% sure even GM states in the service manual to “do a 50/50 mix with dexcool and clean, drinkable water”

What happens if you lose antifreeze with no apparent leak?

Losing Antifreeze With No Apparent Leak. Whenever a vehicle loses antifreeze, also known as coolant, the usual expectation leads the owner to check for evidence of leaks at all the coolant connections and components. Obvious coolant leaks can usually be found in the form of puddles left on the pavement.

What causes a car’s coolant reservoir to overflow?

Be sure you have the proper level of coolant in your vehicle. Overfilling may cause overflowing. Cheap and easy to replace, this is the first thing to check. Your problem may simply be a loose or damaged cap not keeping coolant where it needs to be. The radiator cap is designed to allow access to fluids in a ‘closed’ system.

What causes a car to lose coolant after turning it off?

Coolant loss results, without obvious puddles signs. When a vehicle overheats, or after the engine has been turned off after a long ride, an expansion valve opens inside the radiator cap to allow pressurized coolant to enter the overflow reservoir.

Why does my GMC 2500 have a low coolant light?

A good diagnosis goes a long way. Would’ve saved you from having to buy 2 coolant tanks. I have a 2017 GMC 2500 HD with the 6.6 Duramax. The truck now has about 35,000km on it and the low coolant message is appearing at almost every start up. The tank is not low but I topped it off right to the cap and the message still pops up.

Is the low coolant light on on my Duramax?

Does anyone have this issue with their 2017-2019 Duramax? When starting cold, the low coolant light comes on almost every time. The reservoir is on the full line and I’ve never added a drop on 26,000 miles.

Why is my Chevy L5P low coolant light coming on?

Its happened a few times. The truck is a 2019 2500HD with 30,000 miles. I have a friend with a 2017 with 30,000 and its now doing the same thing. Dealer did a pressure test of the coolant system and found a head gasket issue.

What kind of truck has low coolant light?

The truck is a 2019 2500HD with 30,000 miles. I have a friend with a 2017 with 30,000 and its now doing the same thing. Dealer did a pressure test of the coolant system and found a head gasket issue. This is the 5th truck he has had with this issue in the last 2 months.

Why is my radiator pushing coolant into the overflow tank?

My radiator seems to be pushing the coolant into the overflow tank. When I am done driving and i take off the radiator cap the radiator is low, no coolant above the fins. but the over flow tank is full and it pushes coolant out the top hose on the over flow tank. I can see the coolant dripping down the fender well.???????

What to do if radiator pushes coolant into resivior?

One for sure way is to take it to a shop, and have them test the the cooling system for HydroCarbons. Some might even do it for free since it takes only a second to do. Just warm it up, pull the radiator cap. Stick the exhaust gas analyzer just above the radiator opening, and if there is hc’s in it, you know you have a blown head gasket.

What kind of base tube does Duramax cooling system use?

Knitted rayon reinforces the inner base tube for maximum strength and burst resistance for the life of the hose.Features:EPDM Rubber Compound ConstructionMeets SAE J20R4, Class D-1 RequirementsKnitted Rayon Reinforced Inner Base Tube

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.

What happens when you release pressure in coolant tank?

When you release the pressure in a hot engine, the coolant will boil and puke out coolant. Nascar engines run around 75 lbs pressure, but also must run straight water. Hate to be the first one to say this.

What happens if the coolant cap is stuck?

If the cap is stuck, it will cause a collapsed hose when cool. If any doubt replace the cap. I don’t think you have a head gasket problem. The reason for the pressure– is to raise the boiling point of the coolant –to operate the engine at a higher temperature for emissions, engine life, and economy.

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.

What happens when coolant goes out in a GM Truck?

Still trying to find the answer but have recently found an article illustrating the problem. If your General Motors SUV or truck is losing coolant, with no visible signs of a leak, the source may shock you Worse, allowing the problem to go on often results in a new engine.

What happens when coolant is leaking into the oil?

Coolant is leaking into the oil which is a mixture of glycol and water. Engine oil temperature is far above 212 degrees Fahrenheit. Water boils, turns to steam and leaves through the PCV system. Glycol remains and mixes with the oil. Modern oil will often not turn milky:

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.

Why does my diesel engine have a coolant leak?

March 27, 2017 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.

What does it mean when your fuel injector is leaking?

Leaking fuel injectors can cause Oil Thinning At engine shutdown the fuel pressure should maintain operating pressure or just below that for a substantial period of time. Fuel injector pintle, ball or disc seat leaks as well as the bottom O-ring leak on a side feed injector will cause fuel to escape into the intake manifold.

Why are there bubbles in the coolant tank?

Though it is completely normal to find bubbles in the overflow tank while the engine is not overheating, bubbles in the coolant could be the sign of a leak at the head gasket.

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.

What are the signs of a bad coolant overflow tank?

Here are four of the most common signs of a bad radiator overflow tank. If the radiator coolant overflow tank is damaged or cracked, then you can expect coolant fluid to leak out of it. Sometimes cracks will form on the overflow tank if it is too old and worn out.

Where does the coolant come from in an overflow tank?

The overflow tank is connected to an overflow tube that comes from the radiator. This tank provides extra storage space for coolant as it expands when the engine heats up. Without this extra overflow storage space, the coolant would expand and run out from the overflow tube and onto the ground.

Is there a chance the coolant tank is bad?

The upper radiator hose is firm until I removed the cap, but and can still collapse it about half way with one hand. The coolant isnt bubbling or overflowing, just the tank must be expanding. I know most with jump right in without too much thought and say HEAD GASKETS but is there a chance the tanks cap is bad?

How can I stop coolant leak in my Chevy Silverado?

In addition, check the O-ring seal on the EGR coolant feed pipe for a coolant leak. The O-ring may be pinched or rolled. (Fig. 9) It may be necessary to remove the front accessory drive bracket and alternator. Coolant also may leak from the coolant hoses at the Emission Reduction Fluid Injector (DEF injector).

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.

Where does coolant go in a Duramax Diesel?