Duramax ticking noise

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.

Duramax ticking noise. Seems to be more pronounced from the drivers side. Can’t tell if it’s lower or higher on the engine but seems to be higher. Could be the high pressure fuel pump, it is located in the driver's side front of the engine. If so that is too bad, it can be done, but they are pretty rough to get to.

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).

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.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.hello every one!!in this video I show you how IU diagnossed an engine tapping noise on this 01 duramax.I was using the autel DS708 to diagnoss it and i show ...January, 2022. Bulletin No.: 16-NA-372. characteristic and has no short or long term effects on the engine. DO NOT attempt repairs for this noise. • DEF Injector Noise: A tick noise may be heard coming from under the vehicle and typically it is heard at low vehicle speed and especially next to a building, such as when going through a drive through.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.The noise usually is most noticeable at the rear of the driver's side front wheel well. Customers may also comment about hearing a tick noise inside the vehicle at idle such as when sitting at a drive through window. All 6600 Duramax™ diesel engines have this condition; however, some are more audible than others.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.

Thumping or knocking noise coming from what sounds like the rear of the engine. 2020-2021 6.6L 403 CID L5P #PIP5711A Duramax warm engine idle knock noise. Characteristic noise being amplified by the transmission bell housing. This noise has no short or long term effects on the engine.This is so common on ALL duramax engines-- GM circulated a TSB for the techs to advise them-- it is normal. Some call it a "Typewriter" noise. Do a search on typewriter and you will find lots of info. Chevy 04.5 LLY, 2X, shell, XDR, MikeL Heavy duty up-grade, 6spd, TransGo, deep pan, de-badged, 65 Gallon replacement Aero tank, LBZ …1 post · Joined 2024. #12 · Mar 9, 2024. 2019 L5P Duramax GMC 3500HD DWR Good news I think found typewriter noise. I had the oil pan (pacific performance engineering pan )because original pan drain plug is too high and all oil don't drain out. now the noise is gone, I'm thinking the oil pick tube up was hitting the bottom of pan.Ticking 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.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. 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...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.

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.Hey guys, so I have a 2020 3.0 duramax and almost every time I shut it off I get this sound that sounds like it’s supposed to happen, but I’m not entirely sure. Posting a video I found of another guys truck that does the same. I’ve been told 3 different things, EGR valve cycle, throttle plates adjusting, and turbo waste gate cycling.Jul 12, 2021 · ***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 ... 3303 posts · Joined 2011. #7 · Aug 17, 2016. Older generations of diesels ran up to 22:1 compression, GM engineers and Isuzu (guys who build and designed this motor) have explained the reasoning for it. It's an interaction of parts that are all within spec causing a harmonic vibration in the block.Oct 8, 2013 · The noise usually is most noticeable at the rear of the driver's side front wheel well. Customers may also comment about hearing a tick noise inside the vehicle at idle such as when sitting at a drive through window. All 6600 Duramax™ diesel engines have this condition; however, some are more audible than 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.

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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.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...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.

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 …435 posts · Joined 2015. #1 · Feb 10, 2017. just noticed this noise the other day, it's obvious in drive but quiets down in park. checked my balance rates and they seem kind of all over the place, but 1 & 3 are the worst. The noise sounds like its from the passenger side so that makes me think those two are the culprit.Alaska6.6 Discussion starter. 5 posts · Joined 2014. #1 · Dec 7, 2014. When at idle (in park or drive doesn't matter) there is a loud ticking noise coming from what sounds like drivers side rear of engine. It is only at idle as soon as throttle is given it goes away. At first I didn't think anything of it but it keeps getting louder and louder.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 Jump to Latest Follow 3K views 7 replies 4 participants last post by abbo Apr 26, 20092019 Chevy Duramax L5P Ticking. Engine has a pretty loud tick when I first start it up, sounds like it’s coming from the drivers side but it’s hard to determine. It also increase with RPMs. Once I drive it and get it up to operating temp. It seems to go away. I’ve listened to typewriter tick but this sounds a little bit different.84 posts · Joined 2017. #3 · Nov 10, 2019. Mine makes a terrible noise as well when I shut it down - it's my wife!! 2023 GMC Denali HD Duramax - Black on Black, Long Bed. Soon to be Gone: 2017 GMC Denali HD Duramax - Deep Garnet Metallic Exterior, Cocoa/Dark Sand Interior. Share.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.

About. ***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 ...

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 fogs2019 Chevy Duramax L5P Ticking. Engine has a pretty loud tick when I first start it up, sounds like it’s coming from the drivers side but it’s hard to determine. It also increase with RPMs. Once I drive it and get it up to operating temp. It seems to go away. I’ve listened to typewriter tick but this sounds a little bit different.The most overbought stocks in the industrials sector presents an opportunity to go short on these overvalued companies. The RSI is a momentum ind... The most overbought stocks in ...26. 0. 1. Jan 21, 2017. #1. Do any of you L5P owners notice a tapping or knocking noise that is synched with engine rpm when you let off the accelerator and coast? It only seems to happen between 1,000 and 1500 rpm. My 16 LML made a similar noise sometimes, but this L5P seems to do it more. It's not the typewriter tick, that's for sure.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 …372 subscribers. 11. 1.9K views 2 years ago. **Turn up the volume** Random/Intermittent ticking sound on a 2020 Duramax L5P. Occurs for the first 500 …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!!Sep 30, 2011 · The noise usually is most noticeable at the rear of the driver's side front wheel well. Customers may also comment about hearing a tick noise inside the vehicle at idle such as when sitting at a drive through window. All 6600 Duramax™ diesel engines have this condition; however, some are more audible than others. Chevy / GMC Duramax 06-07 LBZ & LLY Forums. 06-07 LBZ & LLY Duramax Powertrain. Help! Ticking noise. Jump to Latest Follow 21 - 40 of 40 Posts. 1 2. TakeEm · Registered. Joined May 24, 2011 · 3,851 ... definitely not an injector noise! thats loud! sounds alot more like exhaust or some sort of blow by obvious at this point.

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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.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 ...It can become very pronounced right after changing your oil. Sometimes mine is worse right after changing than other times. This last time, no ticking after changing oil. But it is normal as stated above. Chris. '08 Silverado 2500HD LTZ, LMM, CCSB, Dark Metallic Blue. SHOW:| T-Rex grille|GoRhino Dominator III SS steps|AR 18x9 Black machined ...Jul 12, 2021 · ***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 ... lb7s are notorious for making ticking noises, it has to do with the tolerance in the engine. That can be one answer, another answer could be an injector is going bad, but i wouldn't worry about that if you're not seeing any difference in the trucks driving. 2002 2500hd 4x4 Lb7, 4 inch magnaflow with 5 inch tip. Save Share.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.Hey guys, so I have a 2020 3.0 duramax and almost every time I shut it off I get this sound that sounds like it’s supposed to happen, but I’m not entirely sure. Posting a video I found of another guys truck that does the same. I’ve been told 3 different things, EGR valve cycle, throttle plates adjusting, and turbo waste gate cycling.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.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 …Just traded my 2018 2500 Duramax for a new 2020 2500 L5P and notice a throbbing sound at idle when the engine is warmed up ( currently 2200km). Dealership says it is covered under the #16-NA-32 Bulletin on common engine noises Duramax 6.6L, but this is not the ticking or cycling that I have heard on my previous Duramax. ….

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... 13 posts · Joined 2019. #4 · Jun 10, 2019. My 05 was making the same “ticking” noise under acceleration and it ended up with all of my injectors needing to be cleaned. They were all luckily within spec after a good cleaning. Guess I didn’t “blow the soot out of it” often enough..! D Metcalf. North Texas.Apr 4, 2018 · 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. 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...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.hello every one!!in this video I show you how IU diagnossed an engine tapping noise on this 01 duramax.I was using the autel DS708 to diagnoss it and i show ...Nov 19, 2021 · 411 posts · Joined 2016. #5 · Nov 19, 2021. Yeah, that sounds like the hpfp is dying. The proper repair for that is to replace all of the high presure fuel side and flush the low pressure side. A failure of the hpfp sends tiny little metal bits into the fuel injectors damaging them. The hpfp is on the front lower driver side of the engine ... That’s the “type writer tick”. They all do it. No worries. You’ll notice it more with fresh oil. Every Duramax makes that noise, it’s just more noticeable with L5P cause they run …The ticking sound could be a number of things that have already been described, but the combination of ticking/chirping could be as simple as your belt and/or idler arm. I see you are in ND. If your belt is old coupled with the cold temps, that could also describe your problem. It's a simple idea I know. Duramax ticking noise, There are several sound files for noises that may be heard from the DuraMax L5P engine. The first is a noise heard on coast down. Take a listen: This is actually a normal noise. During coast down, the ECM turns on one injector to determine specific fuel trim for that injector. On the next coast down another injector may be triggered so the ..., Taking its name from the coastal town of Lyme, Connecticut, Lyme disease is the most common tick-borne disease in the United States. So, what exactly causes Lyme disease? In short,..., 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., 435 posts · Joined 2015. #1 · Feb 10, 2017. just noticed this noise the other day, it's obvious in drive but quiets down in park. checked my balance rates and they seem kind of all over the place, but 1 & 3 are the worst. The noise sounds like its from the passenger side so that makes me think those two are the culprit., 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., could possibly be the typewritter tick. Our old duramax had this weird ticking noise at idle and i believe it ended up being the bolts on the flywheel or something along those lines. I just know that my buddy fixed it for me when I took it into the dealership for a service. 2003 silverado 1500 - RIP. 2005 Sillverado 1500 - SOLD., 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., 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., 435 posts · Joined 2015. #1 · Feb 10, 2017. just noticed this noise the other day, it's obvious in drive but quiets down in park. checked my balance rates and they seem kind of all over the place, but 1 & 3 are the worst. The noise sounds like its from the passenger side so that makes me think those two are the culprit., I'm a diesel owner as well and have this ticking noise - constant, steady ticking when traveling at low speeds. I notice it when I'm at the coffee drive thru and I can hear it quite well as it bounces off the adjacent wall. I have service scheduled tomorrow and plan to have it addressed. I see a number of diesel owners in this thread., LML DURAMAX “Knock sounds”!!! Vehicle: 2014 GMC 3500 6.6l Duramax Automatic 4x4. (Lml engine ) currently 137,050 miles. (Bought new ) Modifications: CP3 conversion, Industrial injection sportsman pump, PPEI update tuning (109k) miles. 137,050 miles, Started truck up one morning after Easter, I had towed Easter Day with no issue., Ticks are small, blood-sucking parasites that can transmit diseases to humans and animals. While prevention is the best approach when it comes to tick bites, it’s essential to reco..., 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..., 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., 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, …, 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., April 15, 2020. Some 2020 Silverado 2500HD/3500HD and Sierra 2500HD/3500HD trucks equipped with the 6.6L Duramax diesel engine (RPO L5P) may have a thumping or knocking sound coming from the rear of the engine. The sound is often more pronounced in the interior of the truck as it’s amplified by the transmission bell …, Most tick bites are harmless, and won’t cause any trouble at all, other than some irritating itching. Some tick bites, however, can lead to infection and other problems. It’s impor..., 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., Brand new 2021 duramax making this ticking sound from underneath. Anybody have any ideas? Dealership says break it in..., 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 ..., A ticking engine is usually an indication of a problem with the valvetrain. The actual issue isn’t always obvious and could be mechanical problems, an incorrect filter or a failing..., What causes the loud banging noise in my home's pipes? For example, when I turn off the faucet I hear it. Is there a way to prevent it? Advertisement The problem you are describing..., 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., 411 posts · Joined 2016. #5 · Nov 19, 2021. Yeah, that sounds like the hpfp is dying. The proper repair for that is to replace all of the high presure fuel side and flush the low pressure side. A failure of the hpfp sends tiny little metal bits into the fuel injectors damaging them. The hpfp is on the front lower driver side of the engine ..., 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, 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!!, There are several sound files for noises that may be heard from the DuraMax L5P engine. The first is a noise heard on coast down. Take a listen: This is actually a normal noise. During coast down, the ECM turns on one injector to determine specific fuel trim for that injector. On the next coast down another injector may be triggered so the ..., 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 ..., A whining sound in your car’s radio is likely to be DC noise from the alternator, especially if the pitch of the noise changes with engine speed. Uncommon in most modern cars, the ..., 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 ticking noise could be that you are snesative to the ticking noise that Duramax engines make, some more than others. The valve lash seems to be a noise maker. I hear ticking in my engine, but I believe I'm pretty sensitive to it. A little bit less noisy with 15W-40 oil vs 5w-40. But the erratic idling is something that you should address., New York. Feb 20, 2014. #1. Recently completed the head gaskets on my 05 LLY. Overall things went back together smoothly but truck has a few issues now that its back running. 1. The truck developed a pretty substantial ticking noise after gasket replacement. It was not that bad during the initial startup, but during test drive when engine was ...