Are there any problems with the Duramax diesel engine?

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.

What to do if your Duramax cooler goes bad?

Lastly we replace a fair amount of glow plug controllers as well. You will usually get a diagnostic trouble code for the cooler when they go bad. Head Gaskets – As these truck reach the 100,000-150,000 miles we are seeing more and more head gasket issues. The Duramax has a multi-layer steel head gasket.

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.

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.

When to replace battery in GMC Duramax Diesel?

GP cascading (replace one, then next week another, etc.) failure is commonly experienced around the time you also have a battery failure. And when 1 in the pair fails, it’s usually the pass side. Heat, not frigid, kills batteries.

What causes a Duramax battery to wear out?

Any difference between the batteries’ open-circuit voltage will induce current from the one with the higher voltage to the other one, which will prematurely wear out the higher-voltage (newer) battery. Just happened to me. Passenger side was fried but the other was carrying it.

What are cold cranking amps on Duramax battery?

Determine the temperature tolerance rate of the battery before making the purchase. Cold Cranking Amps are the number of amperes a battery at 0 degrees Fahrenheit can discharge for 30 seconds while sustaining 1.2 volts per cell. Cold weather can drain the charge, thus it is essential to determine the CCA ratings of the battery.

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.

How many miles does a LLY Duramax engine get?

With that being said, the block and internals on the LLY Duramax have stood the test of time and can easily surpass the 300,000 mile marker. With common and consistent maintenance, these engines are superbly reliable, especially when left in stock form.

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.

What kind of oil do I need for a Duramax Diesel?

At < $10, this is cheap insurance against preventable oil leaks. We highly recommend Amsoil Heavy Duty 15W-40 full synthetic engine oil for all Duramax diesel applications, or Amsoil Heavy Duty 5W-40 full synthetic engine oil for cold weather operation.

Can a Duramax diesel run in cold weather?

-50F is very extreme for any vehicle, gas or diesel. Typical testing by OEM’s is -40F max, doubt that -50 is common or would last very long. That being said in extreme climates you will have to plug in any vehicle to have it work, the fuel is normally treated so it will work at those temps and also you will need to run the right weight oil.

What happens when I put my Duramax in limp mode?

While in limp mode, the transmission will lock in 3rd gear, the torque converter will remain unlocked, and the transmission will not be able to operate in reverse. It’s great to have such a fail safe, but in many instances the limp mode is activated when it’s not entirely necessary.

What kind of lubricant does a Dodge NV4500 use?

GM NV4500 (All) Threaded stub, 12mm x 2.0 pitch threads You MUST use the correct synthetic lubricant. The GM part no. for the correct oil is 12346190 (quart). The Dodge part number for the same oil is 4874459 Use of ANY other oil in the NV4500 will lead to failure and also voids any chance of a warranty claim.

What to do if your Duramax injector is not working?

To relieve this problem, the wiring harness (or affected portion of the harness) will need to be replaced/repaired. Often, you can verify the problem by wiggling the wires around the injector. If the problem goes away (even momentarily), you’ve identified the affected zone.

When did GMC Duramax lose power under load?

In 2012 there was a P1093 code and the dealer invoice states “…low rail pressure during enrichment. Command high fuel rail pressure, pressure drops. Follow diagnostic chart, test system pressure, relief valve failed” so they replaced the FPRV.

What kind of truck is the 2005 Chevy C4500?

2005 CHEVROLET C4500 4×4 Service Truck w Crane, Mechanics Truck 4WD, 2005 Chevy Kodiak C4500 / GMC TopKick 4×4 4WD DURAMAX Diesel Service / Utility / For sale is this Chevrolet C4500 4X4 Crew Cab Dump Truck! This truck features a Duramax 6.6L engine, Allison A/T, 6 seats, 4 wheel drive, snow plow (n…

What’s the RPM on a 2005 GMC Duramax?

Check out the thread “2005 6.6 max rpm 2000”, there are some suggestions there. Also search for the “ice pick trick” as it is one of the suggestions that often comes up for this problem.

Can a GMC Duramax run with no trailer?

Dropped the boat, let it sit a while then it ran great with no trailer. Took it back and they replaced “some fittings”. So 2 months later, I don’t fish near enough, I drove it 8 hrs to the coast and hooked up to a boat. It ran about 5 miles. Same thing , light comes on loss of power but can feather it up to 40-50 but cant push it.

How can I get 5 mpg on my Duramax Diesel?

Watch Steve explain how you can get up to 5 MPG Increase with your Powerstroke or Duramax diesel with a MPG Performance Module… CLICK VIDEO PLAY BUTTON NOW! 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.

What kind of fuel pump does a Duramax have?

The cylinder head’s DOHC design has the camshafts’ chain driven from the rear of the engine. The crankshaft drive chain runs the high-pressure direct injection fuel pump, which, in turn, operates the camshafts. A variable pressure oil pump is then driven via a belt by the crankshaft.

Are there any issues with the Duramax fuel pump?

The new injectors available from us and others are updated and do not have the cracking issue. Fuel Filter Housing Oring Leaks – The Duramax fuel system does not have any sort of low pressure fuel pump pushing fuel to the engine from the tank. The injection pump sucks all the fuel from the tank.

Why is my Duramax diesel engine not starting?

I have seen more leaks causing no starts, loss of prime and low fuel rail pressure codes from poor fitting aftermarket fuel filters use Delco only. Remember when dealing with power loss and fuel pressure issues the duramax has no in- tank or frame mount fuel pump pushing fuel to the engine.

Are there any issues with my Duramax 2?

Many owners can brag about 2 and 300000mi service with very few if any issues. But as with any mechanical thing some do have their problems and I wont try to cover all of them right now but I want to give a few pointers you should keep in mind before going to battle with one.

Do you need adii for GMC Duramax 06?

You don’t have to get a ADII because the 06 doesnt have the injector issues the LB7’s do. You could get a liftpump without filters, like the Kennedy pump, or Holley pump, or Raptor… Stay away from PPE their pump is junk.

What to do about a Duramax 6.6 LB7 engine?

If you are having a problem with your 2001-2004 Duramax 6.6 LB7 diesel engine, please feel free to give us a call. We carry a full line of repair and performance parts for these engines that we install in our shop on a regular basis. Odds are we have run across your problem before and would be glad to help. Call us at 1-877-367-9351.

Check out the thread “2005 6.6 max rpm 2000”, there are some suggestions there. Also search for the “ice pick trick” as it is one of the suggestions that often comes up for this problem.

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 much power does a Duramax Diesel have?

Power was at an all-time high coming in at 397hp and 765 pounds of torque, and in order to provide this much power while still keeping pollutants low, GM needed to be able to increase the pressure in the fuel system to levels above what the tried-and-true CP3 could safely deliver.

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.

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.

Are there any concerns about the aluminum cylinder heads on the Duramax?

The truth of the matter is that there are no concerns regarding the aluminum cylinder heads on any generation of the 6.6L Duramax. With over 1,000,000 Duramax engines on the road today, the aluminum cylinder head design has yet to be identified (with any credibility) as an inherent problem for Duramax owners.

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.

Are there any major problems with the L5P duramax?

Mechanically, the L5P Duramax is stout and very few major problems have been reported. One common problem is with the MAP sensor however, as it tends to clog with soot and throw a check engine light, but a simple MAP sensor spacer and a can of electrical cleaner can get you back on the road worry free and prevent the soot from building up again.

Are there any problems with my 2005 Chevy Silverado?

First dealer had it for a whole day and said it was fine, they saw NO smoke, then gave me some BS that any repairs would have to be done at a previous dealer (another city) since they changed 2 injectors already. Well after about another month it got worse and I called the GM warranty line.

Are there any problems with the crew C4500?

Some people I have talked to say that these trucks are relics and DO NOT buy one……the guy I talked to owns a 2005 crew 4×4 dump work truck and his list of failures in 70k incuded: transmission, head gaskets, instrument panel, alternator, battery charge isolator, 2 radiators, and it is currently in the shop for an injector problem.

What happens when you have bad injectors in a Duramax?

You’ll also experience loss of power, excessive smoke, rough idling, and engine misfiring. Here are common issues experienced when you have bad injectors. Fuel in Oil. Check Dipstick look for a surplus of oil or even smell the dipstick. When fuel is present, you can often smell it.

What are the most common 6.6L LB7 Duramax problems?

What Are The Most Common 6.6L LB7 Duramax Problems? The LB7 Duramax engine made its debut on Chevrolet and GMC HD trucks in 2001. These diesel engines are where the Duramax started, and they have been so successful that the Duramax are still used in GM HD trucks today.

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.

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 Chevy Silverado 2500?

Scarry!!. See all problems of the 2015 Chevrolet Silverado 2500 . While driving, breaks “stick” causing the to get so hot the smoke and smell like they are burning. The truck pulls and shakes so aggressively you can barely steer it. I have reached out to the dealership and was told there is nothing wrong.

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.

Is there a problem with my Duramax DEF tank?

DEALER FILLED UP DEF TANK AND I WENT THROUGH 1 TANK OF GAS AND ALREADY HAD TO REFILL THE DEF TANK. LOOKED AT VIDEOS AND REVIEWS AND THIS SEEMS TO BE A FAIRLY COMMON PROBLEM WITH THIS YEAR MODEL.

Is the GMC Duramax compatible with diesel fuel?

The Detroit News reports that GM is now facing a class-action suit alleging its 6.6-liter Duramax engine found in 2011-2016 Chevrolet and GMC models is not compatible with US diesel fuel.

Is there a problem with the glow plug on my Duramax?

Often, you can verify the problem by wiggling the wires around the injector. If the problem goes away (even momentarily), you’ve identified the affected zone. 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.

What causes fuel starvation in a Duramax Diesel?

Fuel Starvation and/or Air in the Fuel Lines. The Duramax diesel is susceptible to fuel starvation and getting air in the fuel lines. This can be contributed to the fuel filter housing design and the fact that the Duramax does not use a lift pump. Rather, the high pressure fuel pump (injection pump) is responsible for vacuuming fuel from the tank.

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 injectors?

However, Duramax injectors (in general) seem to be relatively sensitive to contamination and may fail prematurely if proper maintenance is not performed at regular intervals. It is extremely common for the injector wiring harness to chafe over time.

Can a 6.6L Duramax crank no start?

Hi I could really use a tip if you could help. I am working on a 2006 6.6 duramax and can’t get it to run. Drove ina couple months ago but ran very poor like a missfire. then stopped running completly. Will start on starting fluid but then stalls when runs out of starting fluid.

How to repair a LB7 6.6 Duramax engine?

We carry a full line of repair and performance parts for these engines that we install in our shop on a regular basis. Odds are we have run across your problem before and would be glad to help. Call us at 1-877-367-9351.

Can a 6.6L Duramax Diesel stop running?

My GMC 2500 6.6L Duramax Diesel stopped running and will not start. Turns over but sounds like it gets no fuel. Has My GMC 2500 6.6L Duramax Diesel stopped running and will not… My GMC 2500 6.6L Duramax… My GMC 2500 6.6L Duramax Diesel stopped running and will not start. Turns over but sounds like it gets no fuel.

What to do if your Duramax engine won’t start?

Replaced the Injecton pump with ac delco pump, replaced the fuel filter, replaced the 2 fuel lines from filter to engine, replaced ecm and reprogrammed, performed all vacuum test through fuel rail and filter housing and holds 25″ vacuum. The pump sucks down to 10″ vacuum with the return blocked off. still won’t start any help would be appreciated.

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.

The most-reported problem is with the 2001 Chevrolet Silverado 2500 for brake lines not protected. Click on the graph bars for more details about a specific model year.

Are there any issues with the Duramax check engine lights?

Glow Plug System Issues – Nearly half of the check engine lights that come in for the Duramax pickups are for glow plugs. The glow plugs burn out over time and can be a real nuisance to remove from the aluminum heads sometimes.

What’s the Check Engine light on a Duramax?

Started up fine. Only thing i noticed was that the oil pressure was pegged out at 120 and the battery was around 10 or 11 marker on the gauge. Ran and drove fine. Keep in mind the temp was around 18F this morning when i left for work. You will need a scanner to pull the codes.

What is glowplug fault on GMC Duramax Diesel?

P133F is #8 glowplug hot resistance fault. Did you determine if the Elevated Idle is enabled? Are you using remote start? If not, are you giving waiting for glowplug light to go out before turning key to ‘start’? Elevated idle was not activated….it is now though.

Why is my Duramax Diesel blowing white smoke?

Also could be coolant burning off, would also create sluggish motor conditions. Sometimes motors just let out a little white smoke when they first start, especially as the winter comes. Sounds like headgaskets to me.

Where was the 2005 Chevy Silverado 2500HD purchased?

No accident or damage reported to CARFAX. 1st owner purchased on 04/02/05 and owned in IL until 09/26/07 • 2nd owner purchased on 11/03/07 and owned in WI until 03/01/08 • 3rd owner purchased on 03/01/08 and owned in MN until .

Are there any problems with the 6.6L LLY Duramax?

Thankfully, the LB7 injector problems were resolved, but some new problems revealed themselves. Some of these 6.6L LLY Duramax engine problems stem from the fact that it has significantly more horsepower and torque compared to the original Dmax.

When did the Duramax LML emissions system come out?

The Duramax LML was introduced for the 2011 model year featuring the most sophisticated emissions system yet. The latest additions included the selective catalyst reduction (SCR) system, which requires a constant supply of diesel exhaust fluid (DEF) to inhibit the reaction that converts nitrous oxides into more impregnable compounds.

Why did my 2004 Duramax engine not start?

My 2004 Duramax started and then died like it was out of fuel. Now it won’t start. I have about 1/4 tank of fuel, tried priming it until the batteries died.

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.

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.

When did the Duramax 6.6L turbo diesel come out?

The Duramax 6.6L V8 turbo-diesel engine is nearing its 20th year of production, after debuting in 2001. Over the engine’s lifespan it has gone through 6 different engine variations: LB7, LLY, LBZ, LMM, LML, and L5P.

How often should I Change my 6.6L Duramax engine oil?

6.6L Duramax Diesel Oil Change Procedures Click any thumbnail to view fullsize, detailed image • 10 quarts of engine oil and a new oil filter are needed to perform an oil change. We also recommend changing the drain plug every few oil changes as the seal tends to degrade with age.

What causes a fuel filter to leak on a Duramax?

Fuel Filter Housing Oring Leaks – The Duramax fuel system does not have any sort of low pressure fuel pump pushing fuel to the engine from the tank. The injection pump sucks all the fuel from the tank.

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 causes a Duramax engine to hard start?

1 Fuel pump loses prime making the engine hard start 2 Low fuel rail engine codes 3 Engine misfires, shaky idling, performance issues

Why does my Chevy Silverado not start up?

Few things are as annoying as turning the key in your truck and finding it will not start. There are many problems that can result in a Chevy Silverado’s failure to start, making diagnosing the trouble even more frustrating.

How to fix a 2004 Chevy Silverado problem?

No one has added a helpful site for this 2004 Silverado problem yet. Be the first! Read reviews of repair shops in your area. Enter your zip code: Search CarComplaints.com for these popular complaint phrases…

All dash lights come on but no click or anything. Try a bunch of times (taking key out) or just turning off and try to start nothing then all of a sudden it starts like nothing ever happened.New battery installed also and checked it and its good. At times it will not even turnover or try to start .

Is it worth upgrading the gear pump on a Duramax?

Thanks to Merchant Automotive ’s all-inclusive pump upgrade kit (s), a replacement billet-aluminum gear pump housing employs indexing tabs with much more surface area and smoothed edges so as to not dig into the transfer case. Though it’s only a preventative upgrade, this mod is completely worth the time, effort, money and peace of mind.

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 makes a Duramax LB7 diesel so special?

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.

Are there any problems with the LB7 Duramax?

It is extremely important to have the heads surfaced flat before putting the truck back together. 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.

Are there any issues with the Duramax pickup?

This can produce long cranks and hard starts. Glow Plug System Issues – Nearly half of the check engine lights that come in for the Duramax pickups are for glow plugs. The glow plugs burn out over time and can be a real nuisance to remove from the aluminum heads sometimes.

When did I Buy my 2006 Duramax Diesel?

It was a lease return when I bought it in June 2007 with high mileage for its age, but did not appear to have been abused. Are there any known serious problems with the 2006 Duramax, or things that I should watch for?

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.

Is there a problem with my Duramax truck?

If it’s a 4×4 all of the classic Duramax trucks from 01-07.5 have the issue. And if you have any other trucks all Chevy and GMC trucks 1500, tahoe, etc. from 98-07 have the same issue. Anyways below is a link to the fix, and on the bottom left side of our site is 13 pages of instructions that shows the problem and how to fix it.

Are there any flaws in the Cummins Duramax?

Still, and just as we exposed the shortcomings of the almighty Cummins, the Duramax isn’t without its flaws—some of them catastrophic. For example, did you know the injection pump on the LML version is prone to coming apart and wrecking the entire high-pressure fuel system when it does?

Are there any problems with my 2007 Chevy Duramax?

MontyMax I drove my 2007 yesterday and came home and parked it in the driveway for 15 min then got back in and started it up it idle for a min then shut down and won’t re start. I’ve never had any problems with this truck and it has 220 k miles on it.

What kind of crankshaft does a Duramax use?

For a more budget-friendly option, a properly balanced Compstar forged crankshaft (also made by Callies) has shown great results in the sub-1,000hp arena. In an effort to reduce crankshaft fatigue on the front of the crankshaft, alternate fire camshafts are employed.

Which is the best 6.6 Duramax engine to buy?

Just like the LBZ was the best pre-emissions 6.6 Duramax engine, the L5P is the best post-emissions Duramax. All the problems associated with emissions system and injection pump have been taken care of, and for 2017 GM switched suppliers of the injection pump from Bosch to Denso.

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.

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.

What kind of pump does a Duramax cp4.2 use?

Like all Duramax engines from ’01-’10, the LML was also void of a lift pump from the factory. This means that not only does the CP4.2 have to pressurize fuel as high as 29,000 psi before sending it to the rails, but it also has to pull its low pressure fuel from the tank.

Why is the engine harness short on my GM Truck?

Truck is in the dealer again. Long story short, FICM has been replaced 4 times, and now GM has to have an inspector verify that the engine harness needs to be replaced. They say there is a TSB that says that the Edge is causing the wires to heat up and possibly short out.

The most notorious LB7 Duramax problem is their original injectors. Even GM acknowledged their problems when they corrected the original injector design and issued a 200,000 or 7-year warranty on the updated model. That doesn’t mean the LB7 Duramax you own has this problem corrected though.

Can a leaking O ring cause a Duramax to hard start?

If you’re going to own an LB7 Duramax over an extended period of time, the odds are you will experience this problem. A leaking o-ring not only results in a fuel leak, but air can also enter the fuel system. This causes various performance issues, hard starts, and even engine codes.

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 engine does a 2005 GMC 2500HD have?

While we tend to focus on the 2500HD/3500 models, you’ll find the powertrain specs here for the gasoline engine equipped light-duty/heavy-duty pickup trucks as well as those powered by the Duramax 6600 diesel. The above photos of the 2005 GMC & Chevy have been available for some time here in The Diesel Page.

Is the GMC Duramax Trans won’t shift?

Enter your ride HERE to be a part of this months Ride of the Month Challenge! Alright guys I’ve got an 04.5 LLY and after sitting for 2 or 3 days went to drive it and it clunks real hard into reverse and drive.

Are there any issues with the Duramax 3.0 diesel engine?

On the latest newsletter. Has to do with ecm programming and use of block heater. Some 2020 Silverado 1500 and Sierra 1500 models equipped with the 3.0L diesel engine (RPO LM2) (Fig. 12) may have the engine cooling fans running continuously for an extended period of time.

Are there any problems with the LM2 Duramax?

I bought a LM2 duramax recently, a black RST. I really do like it, but it has problems. First problem: After getting off the highway and stopping at a light, exhaust fumes flood the truck through the air vents. I thought maybe it was just one of those new car smells, and I thought it might go away, but nope.

When does a Duramax chev.p.u.lose power?

Duramax Chev. P.U. (2003) loses fuel prime and motor stops running at low RPM or at an idle. No visible leak around filter area. Fuel pressure … read more Vocational, Technical or Tra… Hi, I just purchased a 2004 Kodiak C4500 crewcab with the Duramax diesel engine mated to an Allison with 4:44 gear ratio. What rpm do you … read more

Where did the smoke come from in my Chevy Duramax?

As I tried to keep the truck moving enough to pull off to the side of the road, blue/white smoke came pouring out of the right front fender well so we stopped and bailed out. The smoke stopped immediately and 30 minutes later I was able to drive the truck again.

Why is my diesel engine blowing black smoke?

If an injector is leaking excessively into the return the balance rates are often at the edge of specification. Injectors that have a poor cylinder power contribution or a noise or smoke change when canceled will also need to be replaced and are likely to cause low rail pressure during cranking.

Why did my Chevy Duramax lose power under load?

Follow diagnostic chart, test system pressure, relief valve failed” so they replaced the FPRV. More limps and a year later there was a P0101 code indicating the Mass Air Flow (MAF) sensor failed so I had it replaced. The air filter was changed then too.

How can I tell if my Duramax cylinder head is bad?

There is often a common concern that the compression ratio will change. It will not. The bottom of the head is flat with no combustion chamber. Surfacing the head area does not change the cylinder head to piston volume at all. The only thing that must be carefully checked is the piston to valve clearance.

Why does my Duramax not run over 30 mph?

Took it to dealership because of a surge at idle, and at 55 to 60 mph. Dealership replaced fuel pressure regulator. $900.00 dollars later and a half mile down … read more I have a 2003 Chevy 4500. New injectors, new fuel filter. Will not run over 30 mph. Could it be a lift pump?

What’s the solution for the Duramax LLY overheating problem?

GM’s solution retrofits the new-style LBZ air intake to the LLY engine. I had a difficult time getting my mind around how a change in intake systems would solve an overheating issue. As a result, I did not pay much attention to the bulletin.

Why does my Duramax water pump keep overheating?

This seems to be inherent of the factory water pump design. Overheating. 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.

What kind of problems does a Duramax engine have?

The 5 Most Common LB7 Duramax Engine Problems 1 Fuel Injector Failure 2 Water Pump Failure 3 Fuel Filter Housing O-ring Leaks 4 Blown Head Gasket 5 Overheating (fan clutch problems, radiator gunk)

What is the first year of the Duramax?

The LB7 Duramax was first introduced for the 2001 model year as General Motors retired its 6.5L Detroit diesel. In every possible way, the Duramax was superior to the outdated Detroit and marked a revolutionary turning point for GMC and Chevrolet pickups in the diesel marketplace.

Where can I Buy GM Duramax Diesel parts?

Sinister Diesel is your number one source for high-performance parts and maintenance supplies for your Chevy or GMC Duramax diesel truck. Whether you’re looking for increased performance from your engine, better fuel economy, or some eye-catching style, you’ll find what you’re looking for within our extensive inventory.

Is the Chevy Silverado a Duramax diesel truck?

Chevy Silverado 2500HD 4WD Duramax 6.6L Diesel . Locally owned and manitained. This truck has low miles for its year average and it shows it well. Choose from Over 150 trucks in stock, all have been professionally insepcted by an OC AUTOS The Diesel Boss! THE FIRST and only INDEPENDENT DEALER TO LAB TEST ALL OF THEIR VEHICLES!

Do you need aftermarket Pump for Duramax Diesel?

Pushing your Chevy or GMC Duramax diesel beyond its factory power levels is going to require a more robust fuel system. Part of this upgrade should include an aftermarket Fuel Lift Pump to help you… More Details »

How to stop a Duramax truck from losing Prime?

Tried running fuel line from injection pump to tank of diesel.. No go Pressurized the fuel tank primed it and tried starting.. Nothing Pressurized fuel tank sprayed soap water on lines.. No leaks found Tried having someone prime while I cranked. Truck will run off starting fluid through airbox but dies when you stop spraying.

Can a Duramax diesel engine be kept warm?

Huge no-no for modern diesel engines as your grid heater in the intake and glowplugs stay on until the truck is “warm”. Also sometimes rebuilding the filter head isn’t enough, you have to replace it. Click to expand… Yeah I wasn’t to fond of spraying it.

Why do I get less mpg with a Duramax engine?

Service and maintain your Duramax truck regularly. Failing or worn Chevy Duramax parts can be culprits in reduced fuel economy. The average MPG for a truck with a Duramax engine varies depending on the truck model as well as on which Duramax engine it has.

How much weight can a Duramax diesel truck move?

In fact, a Duramax Diesel 2.8L I-4 can move as much as 7,700 lbs. when used in a pickup truck. You can thank this engine’s superior torque for being able to produce this kind of hauling power.

What kind of truck has a Duramax engine?

Duramax is a diesel engine product line that is synonymous with quality. You’ll find their engines in everything from small pickup trucks to bigger hauling trucks. When you choose a Duramax diesel engine for your vehicle, it is important to consider what you’re using the vehicle for.

In fact, a Duramax Diesel 2.8L I-4 can move as much as 7,700 lbs. when used in a pickup truck. You can thank this engine’s superior torque for being able to produce this kind of hauling power.

Where is the fuel pump located in a Duramax Diesel?

The mechanical h.p. pump located in the engine valley is the only pump, it has the duel function of pulling fuel from all the way from the tank and thru the filter and cooling the ficm to the h.p. section of the pump. This means the entire fuel line, tank to engine, is under suction YOU WONT SEE A LEAK , you might see a wet stain.

How many horsepower does a GM Duramax have?

GM was eager to develop and speed to market the 6.6-liter LB7 Duramax, which produced 235 horsepower. Later versions including the LLY, LBZ, LMM and LML would use more sophisticated turbos and engine controls, ultimately increasing both horsepower and torque by about 80 percent from 2001 to 2011.

Which is the most reliable GMC Duramax Diesel?

Since ’16 I’ve owned a 2500 RAM Laramie and a ’17 F250 Platinum. The RAM was the most reliable of the three at this point. The F250 was plagued by electrical gremlins like a self deploying tailgate when you backed up a trailer or a SYNC system that spontaneously did whatever the hell it wanted.

When do I need to repair my 2003 Duramax?

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. Claims with repair orders prior to October 10, 2006 must be submitted to the Service Contract provider.

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.

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.

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.

When did the first Duramax diesel engine come out?

In 2001 GM released their first Duramax diesel engine. With a few minor tweaks and upgrades, it’s the same 6.6-liter engine found in the GMC Sierra and Chevy Silverado today. It puts out 910-foot pounds of torque, making it one of the most powerful diesel engines on the market.

What kind of gas mileage does a Duramax diesel get?

This is the best fuel economy you’ll find in a vehicle equipped with the 6.6-liter Duramax diesel. GMC Sierra 3500HD With a few periodic dips in fuel efficiency through the years, the GMC Sierra 3500HD has stayed steady with a fuel economy right around 13.5 miles per gallon.

Where was the 2004 Chevy Silverado 2500HD last serviced?

1st owner drove an estimated 13,621 miles/year • 2nd owner drove an estimated 10,140 miles/year • 3rd owner drove an estimated 8,888 miles/year. Last serviced at 178,455 miles in Sevierville, TN on 03/26/19 • Vehicle serviced. Mileage: 194,602 miles Body Type: Pickup Color: Silver Engine: 8 Cyl 6.0 L No accident or damage reported to CARFAX.

What’s the price of a 2004 Chevy Silverado?

The original MSRP of the 2004 Chevrolet Silverado 2500HD is from $24,950 to $41,275. The data above is updated daily, based on used car inventory for sale on CARFAX for the last five model years of this car.

How to identify your Duramax diesel engine code?

Because multiple versions of the Duramax were available in some years, knowing the engine code of your Chevy Silverado or GMC Sierra will make it much easier to ensure you get the correct parts the first time. You can either look it up by application or check the 8 th digit of your truck’s VIN to confirm. Duramax Diesel engine RPO codes include:

Are there any problems with the Duramax diesel engine?