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.

How many quarts are in a Duramax cooling system?

Duramax cooling system capacity is actually 24.7 quarts, so he was closer than you think. 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.

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.

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 kind of cooling system does GM Duramax use?

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

Why is my 2001 Chevy Silverado losing coolant?

No one has added a helpful site for this 2001 Silverado problem yet. Be the first! Read reviews of repair shops in your area. Enter your zip code: I am losing anti freeze with no signs of leaks. I cannot smell it in exhaust & no oil in water. help.

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 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.

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.

Is there a way to stop a coolant leak?

NO STOP LEAK!! works, works too well, the Cu will clog capillaries that run thru ur egr cooler or anything of that manner. if you’re only leaking a little carry extra water Click to expand… musclecarboy, what makes you think an LB7 does not have a 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.

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.

How did the EGR cooler get out of warranty?

With the help of tech assistance at 95,000 we condemned the EGR cooler as it was restricted just enough to throw the mass air reading off at idle and set a P0101. Finally it made it out of warranty and we did a DPF and EGR delete via tuning and with a block off plate and the damn thing started setting the P0101 again.

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 GM Duramax?

In stock form and even when substantially modified, GM’s legendary V8 diesel can provide hundreds of thousands of miles of trouble-free use. Still, and just as we exposed the shortcomings of the almighty Cummins, the Duramax isn’t without its flaws—some of them catastrophic.

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.

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.

Where is the coolant in the radiator when there is no leak?

There’s a COLD/MIN label on the tank indicating the ideal antifreeze level when the engine is cold. The coolant in the radiator should be just below the filler neck. When you are losing coolant but no leak is visible, several parts could be the guilty party.

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.

Can a loose cap stop a coolant leak?

Since you will be towing, I HIGHLY recommend you keep a sharp eye on the temp gauge because since you are not pressurizing the system, it could get alittle hotter, so just watch that! Like I said, I ran a year with a loose cap till I got around to changing the pump, so it helped me alot!

Where is the coolant tank on my 2001 Silverado?

Hi, there’s a slow coolant leak on my 2001 silverado 6.6 duramax at/or near the area where the oil filter screws on (I think its right above this location)after I fill the coolant tank it leaks to a certain level the stops?

What kind of coolant does a GMC GMC use?

A friend of mine still has a 2010 Ford 6.4 that does the same. Another friend has a 2015 Duramax that does it and now my few month old 2018 GMC does it. I actually just filled mine yesterday. It only took about 6-8 oz but it definitely was low. I was also a quart low on oil and praying it’s not using oil too but only time will tell.

Why is coolant leaking from my diesel engine?

We have seen several leaks from these EGR pipes due to bad welds, also though, we have had the coolant pipe along the RH side of the engine rub through on the battery positive cable conduit on a few higher mileage units. Usually the rubbed pipe will leak onto the floor, or sometimes congeal onto the hoses for the DEF injector rather than drip.

How to check coolant leak on driver side rear of motor?

Check this or that piece of rubber hose. x2 on what everyone else has posted. always start simple and then move to the hardest (headgaskets) the system needs to be pressure checked before moving any further. I had the same problem and it drove me nuts trying to find it!!

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.

Where is the coolant hose on a diesel car?

Turned out to be the small 3″ peice of rubber hose that connects to the turbo.It’s a PITA to get to it’s underneath the metal pipe that the radiater hose connects too behind the ac pump ( hope this makes sence).

Are there any problems with the Duramax engine?

The failure is most common in higher horsepower engines, but can still occur in moderately modified and even stock power plants. Not specific to one version of Duramax in particular (ex: LB7, LLY, LBZ, LMM or LML), the problem exists across all generations.

How many versions of the Duramax diesel engine are there?

All told, there are six different iterations of the Duramax diesel engine: LB7, LLY, LBZ, LMM, LML, and L5P spanning from 2001 to the present day. Each version of the engine has its own issues and quirks, and some are less problematic than others.

What causes the injector on a Duramax to leak?

Leaking Injectors—LB7 One thing the ’01-’04 LB7 Duramax is notorious for is injector failure. The two primary failure points of the factory injectors are internal cracking of the injector body itself and corrosion-induced failure of the internal ball seat.

What are the problems with the Duramax LB7?

One thing the ’01-’04 LB7 Duramax is notorious for is injector failure. The two primary failure points of the factory injectors are internal cracking of the injector body itself and corrosion-induced failure of the internal ball seat.

What causes the crankshaft on a Duramax to crack?

Or how about the fact that the rods in the LB7 and LLY engines can bend with added power and the LBZ and LMM mills are notorious for cracking pistons? Discover the worst failure point (s) of your Duramax in the article that follows, along with how to address it. 1. Snapped Crankshaft

Is there a coolant leak on the driver side?

Coolant Leak on Driver Side Rear of motor??? I have a Coolant leak dripping down the driver side rear of the motor on to the front of the bellhousing. It only seems to do it when it is cold not hot. Its pretty bad. I did a water pump and thermostat about a month ago and it never leaked until now.

Are there any problems with a 6.0 liter diesel engine?

Below are the most common problems associated with the 6.0 Power Stroke engine. The 6.0L Power Stroke fuel injection system operates on oil pressure, very high oil pressure.

What should you do when your car is losing coolant but no leak?

Generally, there should be a leak somewhat if the vehicle is losing a high amount of antifreeze. However, a car could be losing coolant but no leak. What should you do when coolant disappearing from reservoir without leaving any trace?

What causes a GM V8 engine to leak coolant?

Knowing where to look helps and often a cracked cylinder head is the source of the problem. Between 2001 and 2006 GM manufactured millions of engines, many with defective cylinder heads castings. The cylinder head castings are weak in the area where the head bolts pass through.

What to do if your car water pump is leaking?

If you notice there is a leak of coolant (which will appear to be green or sometimes red in color) under the center of your car, truck or SUV, contact a professional mechanic to inspect this problem. More often than not, it’s a leak from the water pump that can be repaired before it gets worse.

What are the symptoms of a bad 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. Eventually, these gaskets and seals will wear out, dry up, crack or break entirely.

What should I do if my water pump is leaking?

After a pressure test, my mechanic said the water pump is leaking slowly. About $800 labor and parts to change but he can’t do it until next week and I have a 2,000 mile trip pulling 5t leaving tomorrow I NEED to take.

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.

What was the code name for the Duramax in 2011?

In an effort to keep up with the ever-tightening emission regulations, GM redesigned its Duramax for the 2011 model year, and this time the code name was LML.

Why is my Duramax diesel engine not working?

The trucks computer keeps track of how much fuel needs to be added or subtracted from each individual cylinder to make the engine run smoothly, and this value is called the balance rate. If one cylinder is contributing too much or not as much as the rest, the cause is usually a bad injector and the cure is a replacement.

Where was the 2003 Chevy Silverado 2500HD last serviced?

Last serviced in Spokane Valley, WA on 05/04/21 • Vehicle serviced • Oil and filter changed. No accident or damage reported to CARFAX. 1st owner purchased on 07/31/03 and owned in MO until 08/06/09 • 2nd owner purchased on 09/14/09 and owned in MI until 05/26/16 • 3rd owner purchased on 05/26/16 and owned in MI until .

What’s the problem with the Allison Transmission 1000?

What Might be Wrong with Your Transmission 1 Limp Mode (Allison 1000 Model) The Allison transmission 1000 model has a feature called “limp mode”, in which the… 2 Hooked Up Incorrectly It’s also possible that the transmission itself is just fine, but was installed incorrectly. If… 3 TCM Module Recall More

In an effort to keep up with the ever-tightening emission regulations, GM redesigned its Duramax for the 2011 model year, and this time the code name was LML.

Is there a coolant leak on a Duramax Diesel?