Duramax ticking noise

2020 6.6 duramax has a 5 year/100,000 mile powertrain warranty. 2020 truck has 8000 miles. At least see what dealer says. 2020 6.6L is rpo code is L5P. 2020 LM2 rpo code is the 3.0L. 2023 LZO CC std box 4x4. previous: 2021 LM2 CC std box 4x4 ; '18 2500 L5P CCSB 4x4; '11 LML, '10 LMM and 04.5 LLY. Like.

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.2023 6.6 NOISE QUESTION. Hey guys, just bought my 1st NEW Duramax (EVER) and have a question. The truck is a 2023 GMC AT4 HD! Have owned many used high mile 6.6 trucks and still have a 16 Denali 2500HD with 209k miles that was put on a diet.lly ticking. Pretty annoyed!! I developed a tick about 3 weeks ago and it was clearly coming from passenger side so i pulled valve cover and checked the valves. Found a few that were a couple thousandths out of specs so i went through and adjusted #'s 1,3,5,7. Bam engine is silent, running quieter and better than ever.astrungis. 4 posts · Joined 2011. #25 · Jan 24, 2011. Just got a 2011 Chevy HD3500 Duramax. The Silverado book says it was filled with "Dexos" but the LGH and LML Duramax Diesel supplement book says to use API CJ-4 oil. There are no stickers under the hood near the dipstick/oil fill to indicate either.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...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 fogs1531 posts · Joined 2014. #5 · May 29, 2020. It is not the typical ticking noise. It is a thumping noise and it is supposedly caused by the fanbelt. On the 2020 there are two belts now and the fan is by itself. GMTECH link has a small description on …

ticking noise. Jump to Latest ... when i start up my truck in the morning there is a slight ticking sound but i only have heard it when it is cold it noticeable from the cab but from the front of the truck can be heard anyone know what this is or has anyone else have this prob with ... Chevy and GMC Duramax Diesel Forum. 3.8M posts ...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.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 but it does ...Ticking Noise when Engine Block Heater plugged in. ... Fuel race valve, duramax tuner LBZ induction kit, BD High flow manifold,SDP full EGR delete w/ LB7 up pipe Rareparts G2 tierods, rare parts pitman, ultimate idler arm, supersteer idler pivot, cognito UCAs leveled with 315/70/17's, Monomax shocks, ...Exploding 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 ...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.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 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.

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.Mar 5, 2015 · 445 posts · Joined 2013. #7 · Mar 8, 2015. For some reason I was thinking you weren't hearing the noise at idle. Research "Typewriter Tick" and see if that's your problem. If it is than you have nothing to worry about. 2015.5 Denali 3500 SRW/CCSB - Iridium Metallic, all options. Curt Q20 5th Wheel, Access Tonneau Cover. The biggest winner in JetBlue's announcement appears to be Newark Liberty where JetBlue will add nine new routes, as well as add its posh new Mint service with lie-flat seats, by O...sometimes if one pipe is cold and another is hot the ticking noise is the metal contracting and expanding, if it goes away when truck is real hot driven that's your answer ... A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. Come join the discussion about modifications, towing, classifieds, …Link and couponLaunch CRP429C: https://goo.gl/wdapu7Save an extra $30.00 when you apply the page coupon.Launch CRP429c Support 11 Reset Service Function1.Oil...

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15991 posts · Joined 2008. #6 · Feb 20, 2010. Mine made an awfully loud ticking/tapping when one went crapped out. Almost sounded like a noisy lifter. 06 LBZ EC/LB 4x4. Built Motor/Trans • Bullseye s475/87/.9 • 45% Injectors • Stock CP3 • Built and Tuned by Blackout Performance • 11.76 @ 115 SOLD. Save Share.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.I know it’s an old thread, but the L5P in the 2020 is the noisiest, most unpleasant Duramax to date. The thumping, ticking, screeching, and what I’m assuming is injector knock, is almost Unbearable. Been in 3 different 2020’s and besides when mine melted down a dpf, I’ve yet to hear a quieter Dmax from factory.I never thought I’d need a pair of serious noise-canceling headphones. I don’t mind hours of droning white noise on international flights and generally don’t like feeling like my h...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.

Chevy / GMC Duramax 04.5-05 LLY Forum. 04.5-05 LLY Duramax Powertrain. Loud Ticking/Knocking noise coming from mid-lower engine on driver side. Tags help knocking ticking. Jump to Latest Follow 6K ... This noise I have never heard in the 4 years I’ve owned it. Just had the transmission replaced and she sat for about 6 weeks.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 but it does ...DURAMAX ENGINE TAPPING NOISE diagnossis - YouTube. General Mechanic. 14.3K subscribers. 218. 33K views 5 years ago. hello every one!! in this video I show you how IU …Ticking Noise when Engine Block Heater plugged in. ... Fuel race valve, duramax tuner LBZ induction kit, BD High flow manifold,SDP full EGR delete w/ LB7 up pipe Rareparts G2 tierods, rare parts pitman, ultimate idler arm, supersteer idler pivot, cognito UCAs leveled with 315/70/17's, Monomax shocks, ...245 posts · Joined 2008. #16 · Jan 24, 2013. I had a exhaust leak, (very annoying ticking) thought it was a exhaust manifold leaking, turned out to be a head gasket so here's hoping its not that. 2012 White Chevy Silverado LTZ LML 3500 CC/SB SRW.Nov 26, 2023 · 2020 6.6 duramax has a 5 year/100,000 mile powertrain warranty. 2020 truck has 8000 miles. At least see what dealer says. 2020 6.6L is rpo code is L5P. 2020 LM2 rpo code is the 3.0L. 2023 LZO CC std box 4x4. previous: 2021 LM2 CC std box 4x4 ; '18 2500 L5P CCSB 4x4; '11 LML, '10 LMM and 04.5 LLY. Like. 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.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 …2020 6.6 duramax has a 5 year/100,000 mile powertrain warranty. 2020 truck has 8000 miles. At least see what dealer says. 2020 6.6L is rpo code is L5P. 2020 LM2 rpo code is the 3.0L. 2023 LZO CC std box 4x4. previous: 2021 LM2 CC std box 4x4 ; '18 2500 L5P CCSB 4x4; '11 LML, '10 LMM and 04.5 LLY. Like.

Exploding 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 ...

1. Low Oil Level. Most often, the ticking is caused by a low oil level and will go away as soon as the system is topped off. When the engine doesn’t have the right amount of oil, pressure drops and ticking begins. Ticking might intensify as you accelerate or push the car harder.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.May 29, 2020 · 1531 posts · Joined 2014. #5 · May 29, 2020. It is not the typical ticking noise. It is a thumping noise and it is supposedly caused by the fanbelt. On the 2020 there are two belts now and the fan is by itself. GMTECH link has a small description on the problem but no resolution. Jul 23, 2018 · • Rhythmic Ticking: This is a rhythmic ticking that can be heard during deceleration. The noise is usually, but not limited to, heard coming from around the passenger side of the vehicle. The noise is from the fuel injectors firing (one injector per deceleration and not always the same injector) and is a normal function of the engine and ... Ticks are small, blood-sucking parasites that can transmit diseases to humans and animals. It is crucial to be aware of the signs of tick bites to ensure early detection and proper...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.Rhythmic ticking noise: A rhythmic ticking noise during deceleration may be present. The noise is usually more pronounced from the passenger side of the vehicle but may be evident in other positions. The source of the noise is from the fuel injectors pulsing and this should be considered a normal characteristic with no service …

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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 but it does ...The Duramax ticking noise on acceleration is often caused by an issue with the fuel injectors or lifters. These components may become worn or dirty over time, resulting in the ticking sound. On this exciting adventure as we uncover the secrets behind the ticking noise of acceleration.2006-2009 GMC Savana. with 6.6L Duramax (TM) Diesel Engine (VINs D, 1, 2 - RPOs LBZ, LB7, LLY) Supercede: This bulletin is being revised to add model years and remove RPO LMM. Please discard Corporate Bulletin Number 02-06-01-022G (Section 06 - Engine/Propulsion System). Some of the above vehicles may exhibit a random ticking …Read this article to find out how much noise a tankless hot water heater should make in decibels when it fires up, and problems with other noises it might make. Expert Advice On Im...446 posts · Joined 2009. #5 · Jan 31, 2009. mine has a ticking noise but it is comming from the belt tensioner. NAME: Tyrone. 2001 GMC SLT 2500 HD Crew Cab short box 4X4 LB7. 4" straight exhaust 285/75/r16 210,000miles. Auto Meter Carbon Fiber Ultra Lite Pyro, Boost Gauges. PPE Boost valve.:gearjamin.DURAMAX ENGINE TAPPING NOISE diagnossis - YouTube. General Mechanic. 14.3K subscribers. 218. 33K views 5 years ago. hello every one!! in this video I show you how IU …Fairly common for these trucks' brakes to rattle on rough roadways. The clips/ retainers wear out and allow the pad to rattle in place. Hold your brakes lightly as you drive. If the noise goes away, you've found your issue. 2009 Imperial Blue Metallic GMC Sierra SLT 2500HD Crew Cab - Littleton, CO.Read this article to find out how much noise a tankless hot water heater should make in decibels when it fires up, and problems with other noises it might make. Expert Advice On Im...Ticking noise Jump to Latest Follow 3K views 7 replies 4 participants last post by abbo Apr 26, 2009#1 · Jul 12, 2013. I bought my 08 LMM with 163k on it and no noise. Now with 171k it has developed a ticking/knocking in the front of the passenger head. Any ideas how to …Jul 12, 2013 · 87 posts · Joined 2009. #1 · Jul 12, 2013. I bought my 08 LMM with 163k on it and no noise. Now with 171k it has developed a ticking/knocking in the front of the passenger head. Any ideas how to resolve before it gets worse or before I start tearing in blind. tick tick - YouTube. 2008 GMC Sierra 2500HD CC/SB. 285/70/17 Fierce Attitudes. Ticking noise. Jump to Latest Follow 41 - 41 of 41 Posts. 1 2 3. Durallymax · DuramaxForum Veteran. Joined Mar 3, 2008 · 4,790 Posts #41 · Mar 4, 2010 (Edited ... Chevy and GMC Duramax Diesel Forum. 3.8M posts 207.6K members ….

Are you noticing a random ticking noise coming from your driver's side front wheel well? Find out the cause of this condition at Hot Shot's Secret.While noise canceling has traditionally required the use of bulky headphones, Panasonic has a new idea. Just don't look for it in coach anytime soon. In a quiet nod to a better air...NOTICED BOUT 2 DAYS AFTER THE SERVICE A TAPPING NOISE FROM MOTOR REALLY NOTICEABLE ESPECIALLY FROM DRIVER WHEEL WELL . …for those wondering what the new engine sounds like I filmedvarious angles of the new silverado with the 3.0 LM2 Inline 6 cyl DURAMAX in operation.The noises may be described as a tick, click, or cycling noise. Cause. These noises may be coming from various engine components such as the fuel injectors, intake air flow valve, the turbocharger or the diesel exhaust fluid (DEF) injector and may be heard when the engine is running or after it has been turned OFF. Correction.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, …Brand new 2021 duramax making this ticking sound from underneath. Anybody have any ideas? Dealership says break it in..."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.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 160,000.1. 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. Duramax ticking noise, Ticking noise Jump to Latest Follow 3K views 7 replies 4 participants last post by abbo Apr 26, 2009, 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., NOTICED BOUT 2 DAYS AFTER THE SERVICE A TAPPING NOISE FROM MOTOR REALLY NOTICEABLE ESPECIALLY FROM DRIVER WHEEL WELL . …, Jul 23, 2018 · • Rhythmic Ticking: This is a rhythmic ticking that can be heard during deceleration. The noise is usually, but not limited to, heard coming from around the passenger side of the vehicle. The noise is from the fuel injectors firing (one injector per deceleration and not always the same injector) and is a normal function of the engine and ... , Having a pet is a great responsibility, and one of the most important tasks is keeping them healthy. Fleas and ticks can cause a variety of health problems for your dog, such as sk..., The noise is not consistent though. It can tick twice then pause, then tick half a dozen times then pause,..then sometimes it stops altogether. It’s almost like the sound of and old style radiator heater that’s hammering from warm condensation in cold pipes. Do you know what is actually causing this sound on your truck?, Common problems with Duramax diesel engines include air in the fuel lines, fuel starvation, water pump failure, overheating, injector failure and harness chafing. Some of these iss..., 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., Are you noticing a random ticking noise coming from your driver's side front wheel well? Find out the cause of this condition at Hot Shot's Secret., 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., Hey guys, noticed this ticking sound earlier today ( I just bought the truck a few days ago) 2006 LBZ with 42k miles. ... with 6.6L Duramax(TM) Diesel Engine (VINs D, 1, 2 - RPOs LBZ, LB7, LLY) Supercede: This bulletin is being revised to add model years and remove RPO LMM. Please discard Corporate Bulletin Number 02-06-01-022G …, Oct 30, 2019 · 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. , 164 posts · Joined 2017. #4 · Oct 6, 2021. Probably the DEF injector or the coveted DURAMAX tick. Both normal. These new diesels are so quiet now that you can hear all the weird stuff that has always made noise but was drowned out by engine rattle. New Ride: 2020 GMC 2500 CCLB DMAX. Old Ride: 2004 Chevy 2500 CCSB DMAX., 18. Nowhere, KS. Aug 2, 2014. #1. So I noticed since my last oil change that my truck is making a ticking sound that seems to be more on the left side of the truck . I cannot …, Mar 14, 2011 · 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 when Engine Block Heater plugged in. ... Fuel race valve, duramax tuner LBZ induction kit, BD High flow manifold,SDP full EGR delete w/ LB7 up pipe Rareparts G2 tierods, rare parts pitman, ultimate idler arm, supersteer idler pivot, cognito UCAs leveled with 315/70/17's, Monomax shocks, ..., ***Turn up the volume***Random/Intermittent ticking sound on a 2020 Duramax L5P. Occurs for the first 500 miles or so after an oil change.Short video of it ..., The Ticking noise is normal. Here is a GM Bulletin on It. INFORMATION Bulletin No.: 02-06-01-022M Date: March 30, 2012 Subject: Information on Diesel Engine Ticking Noise Models: 2001-2012 Chevrolet Silverado 2003-2009 Chevrolet Kodiak C4500/C5500 Series 2006-2012 Chevrolet Express Vans 2001-2012 GMC Sierra 2003-2009 GMC TopKick C4500/C5500 Series, 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. , Ticking Noise I have the same problem on 2017 GMC Denali. Dealer just told me it was the fuel pump. That means "live with it" pal. ... A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. Come join the discussion about modifications, towing, classifieds, troubleshooting, maintenance, and more!, Link and couponLaunch CRP429C: https://goo.gl/wdapu7Save an extra $30.00 when you apply the page coupon.Launch CRP429c Support 11 Reset Service Function1.Oil..., 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 is not audible at idle or deceleration, only upon acceleration or when cursing down the highway. It seems to be loudest when the engine is hot 90+. Just Bought the truck and have previously owned a couple doge cummins. They were loud but they hummed along rhythmically not this random clacking and ticking., I have a ticking sound in my Duramax that is getting louder and louder. It is reminiscent of a bad lifter and gets louder under load. It occasionally gets quieter after it sits hot for a …, 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)., 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..., I have a 2003 Duramax and I had that ticking problem when I bought it. I put in the diesel fuel supplement in the grey bottle according mixture on the bottles directions to raise cetane level and lube injector pump and injectors. in one treatment ticking was gone and real noticeable power improvement. worked real well!!, 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 ... , I know it’s an old thread, but the L5P in the 2020 is the noisiest, most unpleasant Duramax to date. The thumping, ticking, screeching, and what I’m assuming is injector knock, is almost Unbearable. Been in 3 different 2020’s and besides when mine melted down a dpf, I’ve yet to hear a quieter Dmax from factory., 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. , 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. …, New to the forum and new to Diesels! I just bought my first Diesel and its an 04 LB7 with 156k on it. Truck needs some work but thats not the issue.. While test driving I noticed a ticking sound from 1100 rpm till short of 3000rpm. If I´m flooring it it goes away and nothing at idle or very light acceleration., 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...