Duramax ticking noise

All Duramax™ engines are manufactured to very close tolerances to meet the durability and reliability standards. Cause This ticking noise is caused by oil bubbling and excited by the V8 configuration and combustion sequence. The noise could be described as an irregular ticking or clacking sound, like random typing on a mechanical typewriter.

93 posts · Joined 2011. #3 · Feb 16, 2011. Typewriter tick- Normal. 2011 LML DuraMax/Allison 3500HD LT 4X4 Z71 CCLB. -Bone Stock. 2005 LLY Dirty/Alli 3500HD LS 4X4 ECLB. -PPE 90HP/160TQ Tune, Air Box Mod, LBZ Mouthpiece, Blocked Resonator, PCV Reroute, EGR Blocker Plate and Fingerstick (YF-5 emissions truck, FU CA).I have a 2008 LMM on an 8 inch lift. I blew my factory driveshaft out a couple months ago so I took it in and got a custom one made longer. The new one has a loud ticking noise whenever I start from a stop. Everything is tight, ujoints are brand new. Buddy said it was normal, just wanted some other opinions or how I can quiet or stop it."A random ticking noise may be heard in some LB7/LBZ's with the engine running at idle speed and with the coolant warmed to a temperature of 70 degrees Celsius or above. An Irregular metallic ticking/clacking sound like random typing on a mechanical type writer, can be heard at the lower rear of the left front wheel house.I noticed a very slight ticking noise when I test drove it, but it was so slight that I wasn't worried about it. I've put 800 trouble free miles on it in the last two weeks, but the tick gradually got louder over the last two days, and today- got loud enough that I got under the hood to look for what I thought sounded like an exhaust leak.with 6.6L Duramax™ Diesel Engine (VIN 1 – RPO LB7) Some of the above vehicles may exhibit a random ticking noise that is most audible on an engine with a coolant temperature of 70°C (158°F) or higher and from idle to approximately 1500 RPM. The noise usually is most noticeable at the rear of the drivers’ side front wheel well.

Chevy / GMC Duramax 06-07 LBZ & LLY Forums. 06-07 LBZ & LLY Duramax Powertrain. ticking noise!? Jump to Latest Follow 2K views ...2020 Duramax thumping sound. Thumping sound heard at idle and increases with RPM as you drive. Can hear it easily when standing outside front or when listening near front wheel wells and from inside the truck. This is my 4th Duramax so I am familiar with all the ticking noise complaints but this is not a tick.The noise could be described as an irregular ticking or clacking sound like random typing on a mechanical typewriter. This condition has been present in diesel engines produced for the last 20 or more years. The overall noise reduction in engines produced today makes this noise seem new when in fact it was masked by other noises in the past.lubeman1969. 1810 posts · Joined 2008. #10 · Sep 23, 2010. Dont worry guys...its the famous LBZ tick!! There is a service bulletin out there somewhere from GM that addresses this issue, and it is perfectly normal. Someone else may be able to chime in, but I see a sticky attatched a couple threads back. 2006 2500 LBZ CCLB * NFAB STEP BARS ...The noise could be described as an irregular ticking or clacking sound, like random typing on a mechanical typewriter. This condition has been present in diesel engines produced for the last 20 or more years. The overall noise reduction in engines produced today makes this noise seem new when, in fact, it was masked by other noises in the past.Feb 8, 2012 · Please discard Corporate Bulletin Number 02-06-01-022G (Section 06 - Engine/Propulsion System). Some of the above vehicles may exhibit a random ticking noise that is most audible on an engine with a coolant temperature of 70°C (158°F) or higher and from idle to approximately 1500 RPM. The noise usually is most noticeable at the rear of the ... By promptly addressing an issue of this nature, you will minimize the occurrence of serious, and permanent component damage. The following are several likely causes of engine ticking, following the completion of an oil change. Low oil level. Loose oil drain plug. Loose oil filter.DEF INJECTOR NOISE: A ticking sound may be heard coming from under the vehicle at low vehicle speeds — especially when next to a building, as when approaching or leaving a drive thru window. This noise also may be heard at idle on 2019 and 2020 vehicles. Remember, these noises are a normal function and operating condition of the L5P diesel ...

I have a similar ticking noise in my 2017 Sierra but I only notice it at really low speeds. It stops when the truck stops and immediately picks back up when you let off the brake and the truck starts to move on idle. ... A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. Come join the discussion about ...053500cc. 128 posts · Joined 2005. #5 · Feb 1, 2006. I had this happen when I had my 2003, I thought it was my brake box, but I found out that if you have the climate control set to blow out the vents, which is all the way counter clockwise, it is like it is trying to move the door under the dash too far and I would get a clicking sound.284 posts · Joined 2010. #1 · Sep 21, 2010. i just picked up a 2006 lbz with 130k on it, it seems to have a loud tick at idle, is that the injectors or is that the way that the lbz's are suppose to be, kinda sounds like lifters, just changed the oil today i am gonna change the fuel filter thursday any ideas? another thing can you hear the ...Sep 21, 2013 · W. wibuckshot Discussion starter. 17 posts · Joined 2013. #1 · Sep 21, 2013. Noticed a rather loud ticking noise coming from underneath of truck when I accelerate. Noise quits when i let off throttle. Its a ticking/rattle noise. Does not make this noise when truck is in Park. I crawled underneath and moved the drive shaft between transfer ... Apr 25, 2009 · Ticking noise Jump to Latest Follow 3K views 7 replies 4 participants last post by abbo Apr 26, 2009 My truck recently started making this ticking noise when the motor is idling so I called the dealer and they said it is coming from the fuel pump and it is normal and not to worry about it. ... 2017 Chevrolet Silverado 3500HD SRW High Country CCSB L5P Duramax Cognito UCA kit, Truxedo soft tunnel cover, 18" Novakane's death metal …

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Feb 21, 2020. #1. New to the forum. Picked up my LM2 end of January. Began having what sounded like valve clatter around around 2k rpm. Assumed, it was potentially normal as the engine continued to break-in. However, it has continued to get worse. The dealership has opened a "Tact" case no answers at this stage as there are apparently no others ...The noise could be described as an irregular ticking or clacking sound like random typing on a mechanical typewriter. This condition has been present in diesel engines produced for the last 20 or more years. The overall noise reduction in engines produced today makes this noise seem new when in fact it was masked by other noises in the past.Additional Options (RPO) Equipped with Duramax™Diesel Engine (RPOs L5P) Condition Some of the above vehicles may exhibit a random ticking noise that is most audible on warm engine in idle and elevated idle condition with fresh oil. The noise usually is most noticeable at the rear of the driver's side front wheel well. Customers may also commentTicking noise when accelerating. The new to me Duramax has a ticking noise going on as soon as you step on the gas. It is present from around 1000rpms to 2700 rpms. If I´m flooring it it goes away and it goes away as soon as I let of the pedal.. I haven´t checked the injector balance rates because I´m lacking the tools.

I had a ticking sound coming from the bell housing and it ended up being a couple of torque converter bolts that backed out and wedged in a slot behind the drive plate. ... A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. Come join the discussion about modifications, towing, classifieds, …Weird ticking noise on 2015. It only happens while the truck is running and it's coming from the engine clearly herd from the wheel wells. It sounds like a hot exhaust cooling down and the crack/pop/ticks you get. Again it happens ONLY while running and the truck is not in a regen.W. wibuckshot Discussion starter. 17 posts · Joined 2013. #1 · Sep 21, 2013. Noticed a rather loud ticking noise coming from underneath of truck when I accelerate. Noise quits when i let off throttle. Its a ticking/rattle noise. Does not make this noise when truck is in Park. I crawled underneath and moved the drive shaft between transfer ...NOTICED BOUT 2 DAYS AFTER THE SERVICE A TAPPING NOISE FROM MOTOR REALLY NOTICEABLE ESPECIALLY FROM DRIVER WHEEL WELL . …Duramax Engine LLY 2004.5 to 2005. 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.From what I understand it is the injection pump making noise, the new engines are so quiet that it is more audible but all duramaxes do it and is normal, never noticed on the LMM but very noticeable on the L5P. 2. …I’m hearing a ticking noise coming from my engine. As rpm goes up so does the tick. Anyone else had this issue. When driving you can’t hear it or notice any difference. ... ** 2.8L Duramax (GDE tuned), RevMax TC, GMC floor liners, Rokblokz mud flaps, ARE Z-Series shell, CX Racing trans cooler, DD SS3 Pro amber fogsThe noise could be described as an irregular ticking or clacking sound, like random typing on a mechanical typewriter. This condition has been present in diesel engines produced for the last 20 or more years. The overall noise reduction in engines produced today makes this noise seem new when, in fact, it was masked by other noises in the past.Plus: Will daylight saving time be permanent in 2023? Good morning, Quartz readers! Twitter layoffs reverberated through Silicon Valley. At a time when several tech companies are c...1. 20/06/2023 6:57 am. Topic starter. The ticking is at its loudest point near the oil pan right next to where the transmission bolts to the engine. I have a video of it, not sure how to post it on this forum. But it is an irregular noise that does increase repitition with RPM but does not imitate RPM at idle. Kurtvw1221.This noise is present in all diesel engine produced in the last 20 years, does not have any impact on engine reliability and durability, and may be more noticeable on the L5P because of the major reduction in combustion background noise. This occurs at idle and can be heard to be louder when standing just behind the driver’s front wheel.

Chevy / GMC Duramax 06-07 LBZ & LLY Forums. 06-07 LBZ & LLY Duramax Powertrain. ticking noise!? Jump to Latest Follow 2K views ...

Jul 26, 2019 · If it is random and sporadic and sounds like a typewriter it is normal. It will also increase in frequency with higher RPM Many posts on here about it. There is also a deceleration tick that can occur while driving and coasting to a stop. Also normal. Tim. 2019 Chevy Silverado 2500 High Country L5P CC/SB. Noise: Clicking while decelerating from 20 miles per hour to a complete stop. Cause: Worn carrier case-side gear bores. Noise: Rumble or clicking that gets worse during hard turns. Cause: Bad wheel bearings. Noise: Driveline squeaking or grinding at any speed. Cause: Worn or damaged U-joints.The noise could be described as an irregular ticking or clacking sound, like random typing on a mechanical typewriter. This condition has been present in diesel engines produced for the last 20 or more years. The overall noise reduction in engines produced today makes this noise seem new when, in fact, it was masked by other noises in the past.Locating and repairing a ticking noise on a 2015 chevy silverado 6.6 duramax turbo diesel. #2 fuel injector copper washer was blown out so we cleaned everyth...Subject: Information on Duramax Diesel 6.6L Common Engine Noises Brand: Model: Model Year: VIN: Engine: Transmission: from to from to Chevrolet Silverado 2017 2018 L5P Allison ... The following information describes these noises: • Rhythmic Ticking: This is a rhythmic ticking that can be heard during deceleration. The noise is usually, …Feb 21, 2020. #1. New to the forum. Picked up my LM2 end of January. Began having what sounded like valve clatter around around 2k rpm. Assumed, it was potentially normal as the engine continued to break-in. However, it has continued to get worse. The dealership has opened a "Tact" case no answers at this stage as there are apparently no others ...I have an 01 duramax that I recently replaced headgaskets in. Shortly after the headgasket job a ticking noise appeared. I think it sounds like a lifter ticking. Possibly a lifter loosened up a little after it has been running. A friend of mine disagrees. He says it is injectors ticking because they are bad. I have no other symptoms.No its not hurting it. You can try & find another oil brand thatll maybe reduce the tick noise, or you just live with it. I use Rotella T in my LMM & Mobil Delvac Super in the LML. The tick is louder/more noticeable in the LML with Mobil Delvac Super. Both engine had been using Valvoline Premium Blue 15W-40, & the tick wasnt as noticeable. Go ...Because they are arachnids, not insects, ticks most closely resemble other arachnids, such as pseudoscorpions or spiders with rounded abdomens. However, some insects, such as beetl...What is my air conditioner noise level? Ensure that the noise emitted does not go beyond the threshold or your neighbours may be irritated. Expert Advice On Improving Your Home Vid...

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There is a ticking coming from the driver side that I can tell and I have no clue what it is. ... Chevy / GMC Duramax 06-07 LBZ & LLY Forums. 06-07 LBZ & LLY Duramax Powertrain. Ticking noise! Jump to Latest Follow Hey Everyone!a bad flexplate will sound somewhat like a bad rod and should not be ran it can destroy the bellhousing and back of motor if it comes apart. if you pull the dust cover on the bellhousing and the flexplate is cracked and you try to move it by hand it will make noise. 01 gmc sierra. 160,000 miles. new injectors at 160,000.06 Black LT3 CCSB Duramax/Allison, EGR blocked, MA sleeves, MA pump rub kit, cognito braces, EFI Live, Banks exhaust, transgo jr., BD manifold, MBRP downpipe. ... "A random ticking noise may be heard in some LB7/LBZ's with the engine running at idle speed and with the coolant warmed to a temperature of 70 degrees Celsius or above. An …This noise is present in all diesel engine produced in the last 20 years, does not have any impact on engine reliability and durability, and may be more noticeable on the L5P because of the major reduction in combustion background noise. This occurs at idle and can be heard to be louder when standing just behind the driver’s front wheel.This article applies to the Chevrolet Silverado GMT800 (1999-2006). This article will identify and address these categories of noises: Engine squealing, knocking, clicking, and coughing. Drivetrain clunking, steering whining, and clunking. Suspension grinding, and brake screeching.'01 2500HD Duramax LB7, Xtra cab - short box w/ 8' Blizzard Plow, otherwise bone stock. ... Idle it sounds normal Cruising is normal but under acceleration it has a weird sound to it. Like a loud ticking or soft knocking noise to it. Please :help . SOLD TRUCK: 2003 Silverado 2500HD, Ext Cab, Short Bed TUNER:Quadzilla On 90HpExploding head syndrome refers to hearing a loud noise when falling asleep or waking up. Learn about other symptoms, causes, and how to treat. Despite its dramatic name, exploding ...Jan 16, 2019 · 4x4'nOLDDUDE. 147 posts · Joined 2017. #11 · Jan 20, 2019 (Edited) Possibly the "ticking" noise that you hear, is the fuel injectors opening/closing. Pop-off pressures are (don't quote me on this) around 1300-1700lbs. for most diesel engines IIRC, so they can get a little noisy, especially when it's cold out. The following information describes these noises: • Rhythmic Ticking: This is a rhythmic ticking that can be heard during deceleration. The noise is usually, but not limited to, heard coming from ... Transmission, Duramax® 6.6L, Tick, MW7, Tick, Clicking, Noise GM bulletins are intended for use by professional technicians, NOT a "do-it ...On mine the "ticking" was about a 6 mo. warning that the injectors were going bad. First noticed louder ticking, later noticed small amount of white smoke at idle, then later a lot of white smoke at idle. 04 Chevy LT 2500HD EC/ShortBed LB7/Allison 2WD - Line-X Liner - Hard Folding Tonneau Cover. ….

May 4, 2008 · Ticking noise at idle. I have a 06 GMC Duramax and at idle, there is a constant loose sounding ticking noise. It does not sound like necessarily coming from the engine but in the front loser to the grill. Before I take it in and have looked at, I thought I would get someones opinion. I had a 03 GMC Duramax and it never made the same noise. All Duramax™ engines are manufactured to very close tolerances to meet the durability and reliability standards. Cause This ticking noise is caused by oil bubbling and excited by the V8 configuration and combustion sequence. The noise could be described as an irregular ticking or clacking sound, like random typing on a mechanical typewriter.The noise could be described as an irregular ticking or clacking sound, like random typing on a mechanical typewriter. This condition has been present in diesel engines produced for the last 20 or more years. The overall noise reduction in engines produced today makes this noise seem new when, in fact, it was masked by other noises in the past.What is my air conditioner noise level? Ensure that the noise emitted does not go beyond the threshold or your neighbours may be irritated. Expert Advice On Improving Your Home Vid...The noise could be described as an irregular ticking or clacking sound, like random typing on a mechanical typewriter. This condition has been present in diesel engines produced for the last 20 or more years. The overall noise reduction in engines produced today makes this noise seem new when, in fact, it was masked by other noises in the past.What you are describing is the common type writer tick. Very common after an oil change. Basically you get some air trapped in the lifter oil passage and it takes a bit of time for it to work out. When my LMM does it it takes 30 to 50 miles for it to clear up. Some claim that T6 or Amsoil are more prone to this.5645 posts · Joined 2007. #1 · May 23, 2009. guys i noticed today after changing my oil yesterday a ticking noise at idle when the truck is sitting on my driveway. Sounds like it coming from oil filter location. it does not do it all the time, just kinda comes and goes. I used 10 qts of Rotella T and a ACDelco filter.Current Duramax powered trucks: 2023 GMC Denali 4x4 2500 V8 Duramax Summit White 2021 GMC At4 1500 4x4 I6 Duramax Summit White ... My 2023 has a ticking sound that is not the DEF injection tick, it is not a ticking or sound I have heard with modern diesels. I have been aware of that DEF tick tick sound for years with many …The FDA recently lifted the clinical hold on Inovio's Covid-19 vaccine candidate. The result could mean huge returns for INO stock. Good news from the FDA could mean big gains for ... Duramax ticking noise, We strive to keep this the #1 forum for tech and information while continuing the push for new and exciting tech on the Duramax platform. From all out performance builds running 8 second ¼ mile territory, to 2000hp sled pullers and all the way back to the average guy looking to boost his performance in his tow rig to get up those hills a ..., Clicking noise 2021 duramax. I have noticed this sound intermittently since I purchased the truck new three years ago. My warranty is close to expiring, and I was reading that some of had issues with the fuel pump that may have sounded like a clicking. The clicking varies with engine RPMs., The noise could be described as an irregular ticking or clacking sound like random typing on a mechanical typewriter. This condition has been present in diesel engines produced for the last 20 or more years. The overall noise reduction in engines produced today makes this noise seem new when in fact it was masked by other noises in the past., We got a noise!This is a 6.6 Liter Duramax diesel engine, AAM 1150 14 BOLT GM 11.5" REAR in a 2002 Chevrolet 2500HD with the with an Allison 1000 transmissi..., Chevy / GMC Duramax 06-07 LBZ & LLY Forums. 06-07 LBZ & LLY Duramax Powertrain. ticking noise!? Jump to Latest Follow 2K views ..., For More Info visit us at: http://1aau.to/h/cKE/In this video, Andy diagnoses a top end clicking or ticking noise in our Chevy Avalanche! Andy locates the cl..., Ticking after oil change. :help had the truck for about a month (09 2wd with 84K). Dealer told me they changed the oil but it was black and smelled burnt so I decided to change it. The filter was torqued on like a mother, anyway I changed the oil with 15w40 regular rotella and a cheap fram filter., Because they are arachnids, not insects, ticks most closely resemble other arachnids, such as pseudoscorpions or spiders with rounded abdomens. However, some insects, such as beetl..., The next noise is a tick typically heard at low vehicle speed and especially next to a building, like when going through a drive through. This is the DEF Injector and again is normal noise. The last noise is a rhythmic tick. This sound will require further diagnosis and may be accompanied by a loss of power, misfire and an SES lamp …, The noise could be described as an irregular ticking or clacking sound, like random typing on a mechanical typewriter. This condition has been present in diesel engines produced for the last 20 or more years. The overall noise reduction in engines produced today makes this noise seem new when, in fact, it was masked by other noises in the past., Ticking noise Jump to Latest Follow 3K views 7 replies 4 participants last post by abbo Apr 26, 2009, RPOs: LBZ, LB7, LLY, LMM. Some of the above vehicles may exhibit a random ticking noise that is most audible on an engine with a coolant temperature of 158 degrees Fahrenheit or higher and from idle to approximately 1500RPM. The noise usually is most noticeable at the rear of the driver's side front wheel well., After replacing Every Pulley including A/C Clutch Assembly it turned out to be the Serpentine Belt...who knew!, Feb 21, 2020. #1. New to the forum. Picked up my LM2 end of January. Began having what sounded like valve clatter around around 2k rpm. Assumed, it was potentially normal as the engine continued to break-in. However, it has continued to get worse. The dealership has opened a "Tact" case no answers at this stage as there are apparently no others ..., Feb 12, 2007 · 2003-2007 GMC TopKick C4500/C5500 Series. 2006-2007 GMC Savana. with 6.6L Duramax™ Diesel Engine (VINs D, 1, 2, 6 -- RPOs LBZ, LB7, LLY, LMM) Some of the above vehicles may exhibit a random ticking noise that is most audible on an engine with a coolant temperature of 70°C (158°F) or higher and from idle to approximately 1500 RPM. , Another note in the underwater soundscape. Some underwater snapping sounds are obvious—the jaws of a shark, the movements of a pistol shrimp, maybe even a parrotfish having a snack..., Indexes are coming off their best week since November after the December jobs report gave further reason to believe inflation may be easing. Jump to US stocks climbed Monday as the..., Hatred has become the new normal. Take a close look at the photograph. I know it is disturbing, but you should be disturbed. It is not a photograph you will see on the front pages ..., a bad flexplate will sound somewhat like a bad rod and should not be ran it can destroy the bellhousing and back of motor if it comes apart. if you pull the dust cover on the bellhousing and the flexplate is cracked and you try to move it by hand it will make noise. 01 gmc sierra. 160,000 miles. new injectors at 160,000., About a couple weeks ago noticed this loud ticking noise out of nowhere. The noise is new and not of the usual diesel clatter. I can place the truck in park and rev to about 15-1700 rpm and the ticking will increase in volume with those revs. ... ** 2.8L Duramax (GDE tuned), RevMax TC, GMC floor liners, Rokblokz mud flaps, ARE Z …, Apr 29, 2009 · RPOs: LBZ, LB7, LLY, LMM. Some of the above vehicles may exhibit a random ticking noise that is most audible on an engine with a coolant temperature of 158 degrees Fahrenheit or higher and from idle to approximately 1500RPM. The noise usually is most noticeable at the rear of the driver's side front wheel well. , Clicking noise 2021 duramax. I have noticed this sound intermittently since I purchased the truck new three years ago. My warranty is close to expiring, and I was reading that some of had issues with the fuel pump that may have sounded like a clicking. The clicking varies with engine RPMs., May 23, 2009 · 5645 posts · Joined 2007. #1 · May 23, 2009. guys i noticed today after changing my oil yesterday a ticking noise at idle when the truck is sitting on my driveway. Sounds like it coming from oil filter location. it does not do it all the time, just kinda comes and goes. I used 10 qts of Rotella T and a ACDelco filter. , 136 posts · Joined 2013. #1 · Apr 4, 2018. My truck is right at 200,00 miles with all original drivetrain components. It has started making a clicking/ticking sound that can be heard in the cab pretty good and once window is rolled down, it is even louder. It sounds like it is coming from the rear end or bed area., 30 posts · Joined 2023. #16 · May 3, 2023. Much of the noise generated by a diesel engine comes from the combustion process. The LM2/LZ0 Duramax is configured to pulse the injectors up to 10 times for emissions, noise and performance. If deposits start to form in the injectors, the atomization of the fuel will be degraded and can contribute ..., Apr 7, 2021 · All Duramax™ engines are manufactured to very close tolerances to meet the durability and reliability standards. Cause This ticking noise is caused by oil bubbling and excited by the V8 configuration and combustion sequence. The noise could be described as an irregular ticking or clacking sound, like random typing on a mechanical typewriter. , Mar 17, 2013 · I have an 01 duramax that I recently replaced headgaskets in. Shortly after the headgasket job a ticking noise appeared. I think it sounds like a lifter ticking. Possibly a lifter loosened up a little after it has been running. A friend of mine disagrees. He says it is injectors ticking because they are bad. I have no other symptoms. , The noise could be described as an irregular ticking or clacking sound like random typing on a mechanical typewriter. This condition has been present in diesel engines produced for the last 20 or more years. The overall noise reduction in engines produced today makes this noise seem new when in fact it was masked by other noises in the past., Clicking noise 2021 duramax. I have noticed this sound intermittently since I purchased the truck new three years ago. My warranty is close to expiring, and I was reading that some of had issues with the fuel pump that may have sounded like a clicking. The clicking varies with engine RPMs., Some of the above vehicles may exhibit a random ticking noise that is most audible on an engine with a coolant temperature of 70°C (158°F) or higher and from idle to …, The truck is a 2006 2500HD with LBZ Duramax and 6-speed Allison, <19,000 miles. The drivetrain has been making what I would describe as a chorus of LOUD cracking, snapping, popping and ticking sounds during cold and warm starts when the ambient temperature is about 65*F and higher. It doesn't make the noise every cold / warm start …, The noise could be described as an irregular ticking or clacking sound like random typing on a mechanical typewriter. This condition has been present in diesel engines produced for the last 20 or more years. The overall noise reduction in engines produced today makes this noise seem new when in fact it was masked by other noises in the past., May 20, 2021 · Subtle and short lived engine knocking in a 2021 Silverado 1500 Duramax 3.0 when warm and accelerating from a stop. UPDATE: Diesel fuel additive has eliminat...