Are there any problems with the GM Duramax?

Table of Contents

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.

What kind of engine does a GM Duramax have?

It’s been said before, but that doesn’t make it any less true: The 6.6L Duramax is one heck of an engine. In stock form and even when substantially modified, GM’s legendary V8 diesel can provide hundreds of thousands of miles of trouble-free use.

How many miles does a GMC Sierra 2500HD drive?

1st owner drove an estimated 28,533 miles/year • 2nd owner drove an estimated 0 miles/year • 3rd owner drove an estimated 4,212 miles/year.

How can I Keep my Duramax Diesel pump healthy?

However, there are measures you can take to keep the pump happy and healthy, the first being to always buy your diesel from a high-traffic, reputable filling station that’s known to dispense good, clean fuel. Second, always change the fuel filter at or before the recommended service interval.

Can a 6.6L Duramax diesel engine be changed?

If this occurs, change the fuel brand. It may require at least one full tank of the proper fuel to turn the light off. SeeFuel for Diesel Engines030. If the light remains on, see your dealer. Chevrolet/GMC 6.6L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13337828) – 2020 – CRC – 4…

When does the DIC come on on a Duramax Diesel?

The DIC comes on when the ignition is on. A Duramax diesel vehicle may have the following additional DIC menu items: DEF :Displays the Diesel Exhaust Fluid (DEF) level as a bar graph with individual segments that illuminate from Empty (E) to Full (F). When LOW appears on the display and the segments turn red, add DEF as soon as possible.

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.

What kind of transmission does a Duramax diesel use?

It was the first to come bolted to the six-speed Allison transmission which provides a lower cruising RPM and greater fuel efficiency when compared to the five-speed on the LB7 and LLY.

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.

Is the water pump on the LB7 Duramax leaking?

Water Pumps – Another issue with the LB7 Duramax is the water pump leaking. This one is fairly common and unfortunately a huge pain in the butt to change. Water will seep from the underside of the pump. Be prepared though because you will have to remove the dampner pulley to get the pump off.

Are there any problems with the Duramax LMM?

One problem can rear its head when you are pushing the power of the LMM to a level GM never imagined, and that’s with the pistons. Simply put, they can crack under pressure. There are a lot of factors which dictate the power level where a piston bites the dust, but it’s usually north of 600 horsepower.

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.

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.

What kind of transmission does a Duramax pickup have?

Nearly all Duramax powered pickup trucks were equipped with the Allison 1000 automatic transmission, with the five-speed version running from 2001 to 2005, and the six-speed starting in 2006 and running until 2019.

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 the LMM Duramax a reliable diesel truck?

The DPF system and the regeneration process it undergoes is one of the LMM Duramax truck’s biggest problems. Despite the DPF system, the LMM Duramax is still a reliable and capable diesel. You can find everything you need to know about this truck in our LMM Duramax specifications chart below.

What are the quarter mile times for a GMC Truck?

There are a great deal of factors that affect the GMC cars 0-60 stats, such as the vehicle’s transmission or even the elevation of the test, so different sources may test the same vehicle and each may arrive at a unique 0-60 mph and quarter mile result. Zero to 60 times does not guarantee the accuracy of any of the GMC truck 0-60 mph times.

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.

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.

When did the first Duramax V8 engine come out?

Duramax Engine LB7 2001 to 2004 The first Duramax V8 was introduced in 2001 and was given the code name LB7. The introduction of common rail injection powered by the Bosch CP3 injection pump made the LB7 Duramax stand apart from other diesels of the day with excellent power and efficiency.

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.

It’s been said before, but that doesn’t make it any less true: The 6.6L Duramax is one heck of an engine. In stock form and even when substantially modified, GM’s legendary V8 diesel can provide hundreds of thousands of miles of trouble-free use.

Duramax Engine LB7 2001 to 2004 The first Duramax V8 was introduced in 2001 and was given the code name LB7. The introduction of common rail injection powered by the Bosch CP3 injection pump made the LB7 Duramax stand apart from other diesels of the day with excellent power and efficiency.

Is the GMC pickup a heavy duty truck?

The GMC lineup of light duty pickup trucks deliver exceptional power and efficiency, elevated attention to detail and purposeful innovation.

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.

How big is a 2013 GMC Sierra truck?

2013 GMC Sierra 1500. The GMC counterpart to the Chevrolet Silverado, the GMC Sierra 1500 is a full-size pickup truck with a maximum towing capacity of 7,200 lbs.

What kind of truck is the 2019 Chevy Duramax?

2019 CHEVY 2500 HD CREW CAB LTZ, 4WD, Duramax diesel, Allison auto, 17,000 miles, heated seats, Nav., moon roof. Loaded. Local Truck! Trades Welcome Keith 541-517-8677 SUMMERS

Who is the owner of the Duramax pickup truck?

LOCAL INQUIRES AND TRADES ONLY ONE OWNER, NEW TIRES, COMPLETE WITH CERTIFIED GM SERIVCE RECORDS! LOCAL TRADE from a very conscience owner. We completed our inspection, and found no service work needed. None. Nada. All required maintenance was completely up-to-date! So now, all it

How big is a GMC Sierra 3500HD truck?

Relatively unchanged for 2013, the GMC Sierra 3500HD is a heavy duty full-size pickup truck with a maximum towing capacity of 22,600 lbs and DRW trim levels. Only a few major changes were in store for GMC in 2013.

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.

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 was the problem with the LBZ Duramax in 2006?

Glow plug failure was a concern on the 2006 model year LBZ and LLY Duramax models, but the problem should have been long corrected for owners of these years. The concern was that the glow plug module would over cycle the glow plugs, creating a scenario in which the tip of the glow plug could actually deform and/or break off in the engine.

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

Why does my GM car say no start no crank?

How to diagnose a no start no click on GM vehicle. If you have a late model GM vehicle and turn the key only to hear nothing, you’ll most likely think you have a dead battery—and you may. But a no start, no crank, no click condition can be far more involved than that.

Why are the Pistons on my Duramax not working?

Low-quality castings from its suppliers and a reduced amount of meat present in the wrist pin area (thanks to the use of wrist pin bushings) are to blame for factory piston failure. In most cases, the cast-aluminum piston cracks along the center line of the wrist pin, as shown above.

What should I do if my Duramax battery goes bad?

This will protect you against a lot more things than just bad batteries and it can be used to help others as well. First unhook both negative cables. The pass. Side needs the brace removed. The fuse thing will come off easy, and while off clean the connections. Negative cables are last thing reconnected.

Why does my Chevy Silverado battery keep draining?

My 2007 Chevy silverado battery keeps draining. I thought it was from the radio not shutting off when I open the door but I shut the radio off and the battery still drains. What can be draining it? Clicking this will make more experts see the question and we will remind you when it gets answered.

How to drain a battery on a GMC Truck?

With key off, unhook your positive battery terminal. Put one multimeter lead on the battery terminal and the other on the positive cable. You’re basically making the multimeter part of the circuit. Set the meter to read amps. Now, since its being drained I assume you’ll see some kind of amperage draw.

How do you know if your GMC truck battery is dead?

One by one, pull each fuse in your fuse box. Check the multimeter after each fuse pull to see when the amperage draw goes away. Once you find the fuse that causes the amperage draw to go away, you at least know what circuit the draw is coming from.

However, there are measures you can take to keep the pump happy and healthy, the first being to always buy your diesel from a high-traffic, reputable filling station that’s known to dispense good, clean fuel. Second, always change the fuel filter at or before the recommended service interval.

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 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.

What happens if the crankshaft on a Duramax goes bad?

Perhaps the most devastating of all Duramax failures is a broken factory crankshaft. Not only does this mean game-over for the engine, but it results in a truck that’s down for weeks (if not months) and a huge chunk of change missing from your wallet.

Can a Duramax fuel filter be changed on a GMC Sierra?

This guide is specific to the 2017, 2018, 2019, 2020, and 2021 6.6L Duramax (L5P) engines found in Chevrolet Silverado and GMC Sierra 2500 and 3500 trucks. To complete an oil change on this engine, follow this guide. As an Amazon Associate I earn from qualifying purchases.

When did I buy my new GMC Duramax?

I purchased a new 2020 GMC Denali 2500 with the Duramax back around March 14, 2020. The truck that I bought had right around 300 miles on it when I bought it. At 521 miles, I got the first CEL and immediately took it to my local GM dealer that happened to be a Chevrolet Dealer.

When did the GMC Duramax Denali 2500 come out?

Enter your ride HERE to be a part of this months Ride of the Month Challenge! I purchased a new 2020 GMC Denali 2500 with the Duramax back around March 14, 2020. The truck that I bought had right around 300 miles on it when I bought it.

How many miles does a Duramax dually have?

I friend of mine is selling his ’09 Duramax dually. Its in great shape, has 130k miles on it. He recently had the injectors changed. Its his daily driver, he has never towed anything or really worked the truck; honestly I still can’t figure out why he bought it. I’m coming out of a 2006 F250 with a 6.0h no.

One problem can rear its head when you are pushing the power of the LMM to a level GM never imagined, and that’s with the pistons. Simply put, they can crack under pressure. There are a lot of factors which dictate the power level where a piston bites the dust, but it’s usually north of 600 horsepower.

What causes a Duramax to overheat in the summer?

Overheating typically occurs while towing in the Summer months, and is most prevalent in 2005 or earlier models (2006+ models received a larger radiator and fan). Overheating often occurs as a result of a fan clutch failure, preventing the engine fan from providing supplemental airflow as necessary to keep the engine from overheating.

What causes a Duramax injection pump to fail?

As a result (allegedly), the lack of lubrication in the fuel can cause a premature failure of the injection pump, to a point where it won’t allow the LML Duramax to run. You can be driving down the road and everything seems normal, and when the pump fails, the truck just shuts off.

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.

Overheating typically occurs while towing in the Summer months, and is most prevalent in 2005 or earlier models (2006+ models received a larger radiator and fan). Overheating often occurs as a result of a fan clutch failure, preventing the engine fan from providing supplemental airflow as necessary to keep the engine from overheating.

What happens when a Duramax engine goes down?

Not only does this mean game-over for the engine, but it results in a truck that’s down for weeks (if not months) and a huge chunk of change missing from your wallet. The failure is most common in higher horsepower engines, but can still occur in moderately modified and even stock power plants.

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.