Long crank start, Chevy Silverado 3.0L Duramax diesel, Sierra, Tahoe, etc

In this video, we are discussing a known issue for the Chevy Silverado 3.0L Duramax diesel also affecting the GMC Sierra, GMC Yukon, Chevy Tahoe, Chevy Suburban and Cadillac Escalade. This issue on the 3.0L Duramax diesel is pretty frustrating for owners.
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[@Pickuptrucktalk]

Here is the interview with the chief engineer: kzbin.info/www/bejne/pniTp62rj8-cqtE

[@jasons5842]

Already watched this old video with the lead engineer and this dude has no idea what kind of lemon this engine is becoming. They better get in front of this and start beefing up some parts and changing a few designs because I am now not buying one and I really, really wanted one and I am a 30 year 5.9 Cummins owner thinking about a baby duramax. Blasphemy, I know.

[@icare7151]

Any updates?

[@icare7151]

Found out every one with 3.0l diesel should get oil test for excessive wear which allegedly is happening causing excessive timing cam wear which snowballs to other issues. Consider switching to Amsoil which apparently has 6x the lubrication capability. SAE-0W-20-dp0

[@Pickuptrucktalk]

@@icare7151 nothing. Sorry.

[@lance3613]

@@Pickuptrucktalk How about the ECM flash update that came out a month ago in early November ? RE: TSB PIP5823x. This appears to be resolving the issue.

[@mendiesel7932]

I have 45k miles on my 2020 LM2 and as of now, haven’t had any issues. I drive it hard and pull a large camper as well. Fingers crossed that it stays reliable.

[@davidhaymon1708]

I have a 2020 3.0 with 34,000 miles on it that came off the delivery truck at the end of Feb 2020. Mine has done it three times over the life of the truck. It always has started the next time. Plan to cover next week at the oil change at the dealer…other than that, flawless and 26.5 hand calculated mpg since purchase.

[@TimHancock-h6e]

Same, never with key fob or app start. Only with the button on the dash.

[@icare7151]

At next oil change get a sample of your oil and have it tested to see what and what amount of contaminants it contains. Some suggest using Amsoil as there may be a lubrication and thus excessive wear problems among other potential issues causing the problems. Once this gets sorted out I plan on purchase a GMC Denali suv with the 3.0l diesel.

[@glendyrockwell3920]

I have a 2020 with 51k miles. Is this covered under the GM warranty? Any recalls. This literally happened to mine yesterday…trying to find out more info.

[@darthenx2585]

I hope GM figures it out quick because the 3.0L sounded like a great alternative engine.

[@kylebrinegar9328]

@@Alex-eo1iv What's wrong with you trans?

[@MrMaxitaple]

@@kylebrinegar9328 I think the trans it's homosexual

[@matthewcarlesso9503]

@@MrMaxitaple 💀

[@ZmannR2]

They did. The LZ0

[@robsea8088]

They did fix it. It was fixed letting the ECU know that it has to wait a a fraction of a second more to start the engine. Fixed 100%, is my understanding.

[@nick-cb6dl]

So far I’m 15,000 miles in on my ‘20 Silverado with this engine. If this happens before warranty it’s gone, if it happens after the warranty it’s gonna be parked on the train tracks and reported stolen.

[@hugieflhr03]

This was the first thing every shade tree mech pointed out as being a headache down the road when they released this engine. Anything chain driven needs to be accessible.

[@EdwardsAdventureZone]

I’m just over 1,000 miles with my 21 Silverado and so far so good. If something was bent, I find it hard to believe it would happen more frequently. Fingers crossed GM can get a real fix figured out soon and this issue can be put to rest. So far, I’m loving the 3.0 Duramax. I’ve had two 5.3’s and would choose this engine over the 5.3 any day of the week.

[@coachmixer8230]

I have the 5.3L right now, really interested in the 3.0L for my next one. How does the acceleration/power compare to the 5.3L? I know the fuel range is crazy, my concern is more with dropping 70 HP

[@dragonoz1968]

@@coachmixer8230 it's a beast off the line, but it could get chased down by the 5.3 eventually. I saw a drag race between the 3.0 and the 6.2 gas burner and the Duramax had him off the line and for the first few hundred yards but the 6.2 chased it down.

[@clintgault3078]

@@coachmixer8230 I’ve watched some videos of drags of the 5.3 and 3.0 side by side. The 3.0 pulls away from the 5.3 but would get reeled in by the 6.2. I have 10k on my 21 as of now. I pulled my bass boat with the 6.5’ bed full to the top on a 1600 mile trip. We averaged 20.99mpgs on paper. I regularly get 24-26 on the interstate running 74 with the cruise on. My best has been 33.xx mpgs. I have been a gm tech for 15 of my 22 years working on vehicles. I was hesitant to buy a 3.0 mainly due to the belt for the oil pump. I decided to after researching the complete power plant. I’m extremely happy with mine so far. You have to keep in mind, you always hear the bad louder than the good when it comes to issues with any product. Whether it’s vehicles or any other product consumers use. It’s unfortunate that ignorant people spew information out to scare people when they have no idea what’s going on themselves. Hope that helps.

[@coachmixer8230]

@@clintgault3078 definitely helps. I’ve decided I’m going to wait for the price drop on the 2021’s and go with a 3.0L Duramax on either a Silverado or Sierra. Ideally I would grab one of the new Tahoes or Yukons, but those are a little out of my range for right now. I just need a crew cab to hold the wife, baby & dog... things get a little tight in the double cab lol.

[@clintgault3078]

@@coachmixer8230 I ordered my 21 in October of 20. It made it to my dealer in January of 21. It’s a crew Z71, 6.5’ bed, LTZ. The kids have tons of room in back and my wife likes riding in it better than her 08 Tahoe.

[@joechandler8398]

I bought my ‘21 Sierra in June. It did the long crank, no start thing twice during the first month of ownership. Like most others, the second push of the button resulted in a perfectly fine start. I had my truck in for its first oil change 10 days ago. After telling the service manager about the issue he had me bring the truck back 3 days later for a computer upgrade. The truck seems fine.The only difference I’ve noticed since the upgrade is that it seems to crank a half-second or so longer when starting. Other owners should check to see if their vehicles need the upgrade.

[@curtiscardona]

Just got my truck back from the dealer. I noticed it cranked slightly longer as well. I also noticed that the engine seemed to run a little smoother when getting up to speed. I hope this update fixes it.

[@predpalina]

What I liked about your channel, is that you exposed the cons of the vehicles. Others mostly cover new cars reviews and never have a follow up long-term updates on the issues. Thank you Tim!

[@jetfixer3207]

My '21 Sierra AT4 has done it one time, and it started right up on the second attempt. I spoke to my service writer, and he had one in the shop with a severe case of this. I believe the fix on that one was also some sort of software change. That truck now cranks a tiny bit longer than it used to before a normal start, but it does start every time.

[@jetfixer3207]

I just had my AT4 in for service on an unrelated issue & they gave it ECM update #11YN101916386, so now my engine cranks a little bit longer before it fires. I don’t know if it was necessary, but it got it anyway.

[@craigvanloy6919]

I have a 21 LTZ with 3.0 Duramax with 7300 miles and it's been great with no issues. They just announced they supposably have a fix now for the long crank no start. They shim the camshaft sensor

[@joehebeler3066]

This seem like a nightmare service job. I barely trust the idiots at my local dealership to change the oil let alone tear the cab off , fix the motor, and then put it all back together.

[@joehebeler3066]

Also, this doesn’t explain why the guys that have had this cam sensor/exciter fixed have had the same problem happen again right after it is all replaced???

[@ccash001]

I got a 21 GMC Sierra 3.0, my truck did this Saturday 14 Aug 21. I had done a key fob remote start. The truck never started, the starter spun for about 15 seconds. I got into the truck and pushed the start button. The truck almost started immediately. My truck hit 1,000 miles the following day. If it does this a second time, I might take it in to the dealership. Thanks for posting this video. It was a great help.

[@ccash001]

It happened for a second time today 21 Aug 21. Same location as last time. Also with the remote start. One thing I noticed, on both incidents. I was not parked on level ground. Not sure if that has anything to do with it. I find it strange it happened a second time, almost exactly 1 week apart. Probably within an hour in either direction. This is mind boggling!

[@MrSmurf459]

Happened to me yesterday fam! I’m really worried, are we not eligible for a new vehicle? The vehicle only has 1700 KM’s!

[@Jackmerius_Tacktheretrix]

A perfect example of what I said whem this engine first came out. Putting the timing chain, oil pump drive, amd fuel pump drive on the back of the engine was a stupid idea. 50hrs of labor to remove the cab just confirms this. I was really excited about this engine until I learned all of the above items were on the back of the engine.

[@camperatwill3951]

My truck has 4,000 miles and done the rapid start turn over 4 times. Dealership sucked and did a software hit with no change. I love this engine bought and purchased partly on your review of it, not putting any blame on you.

[@adamharris2674]

Ford: Little bit of rust on a few cast iron parts (OMG huge problem!!!!!) Chevy: New truck engine wont start (oh well that's just how it is...)

[@puffnstuff12]

Maybe checkout how Ford is handling their super duty rear axle thin wall issue.

[@adamharris2674]

@@puffnstuff12 maybe understand that’s a supplier issue (Sterling Axle) and Ford will take care of its customers. Meanwhile hundreds of thousands of Super-duties out on the job site still START everyday..

[@puffnstuff12]

@@adamharris2674 Perhaps you should take the time to investigate exactly how Ford is addressing this issue and you wouldn't want to buy another one.

[@adamharris2674]

@@puffnstuff12 my friend ask yourself, you being a full-time Ford hater, could they really do anything properly in your eyes? All the dozens and dozens of fatal problems at GM and we’re actually talking about this..

[@puffnstuff12]

@@adamharris2674 I don't deny that GM has many issues just like the one illustrated in this video. My thing is that if you buy a HD truck and your dealer is told to weld an already thin axle housing instead of replacing it with one of proper wall thickness, well that just make me go hmmm.... Pro tip....if that's your predicament load the bed until the housing bends under the spring pads and they will give you the correct one.

[@jasonlitton9136]

So a couple things, the exciter wheel does not engage the crank shaft and cause it to turn, exciter wheel has a single purpose and that is to excite the cam shaft sensor via the Hall effect. So if ther is a bent wheel it must be during manufacture ring somehow, nothing in engine should contact the wheel. All that being said, I have a 2021 Silverado that is 7 months old and I have had a crank no start 6 times, I simply press the button to stop it the. Press again and it starts right up, so for me it is unlikely I have a damaged exciter, mine is likely a software issue, but it has only happened about once a month

[@user-cx2bk6pm2f]

Tim, im a product development engineer. You're description is accurate; it's exactly what happens.

[@nickdinser962]

Something to note: the camshaft position sensor exciter wheel does not drive the camshaft. It simply exists so that the sensor can detect rotational velocity and position of the camshaft.

[@BobbySi507]

Joined this club too> my 21' has done it twice in one month. starts up fine on second push of the button. its at the dealer now, hopefully its nothing major and just a ECM update!

[@frankhpns]

My 2021 Sierra 3.0 diesel had the bent camshaft reluctor wheel replaced. Total 47+ days in the shop. Your picture on KZbin is my vehicle. One day after I got it back it went into a fail-to-start overcrank fault. Dealer mechanic now thinks it is a fuel pump issue not related to the camshaft relutor problem. The problem does not ECM generate any fault codes.

[@Pickuptrucktalk]

Thanks for sharing and hope you don’t mind me using your photo!

[@mattbaxter3170]

Very Interesting. I bought a new 2021 and drove it only 400 miles when it refused to start and was towed to the dealer. They gave it back to me and it did it again the very next day. Towed in again, then it waited for 3 weeks to try and get a new ECU and the dealer finally bought it back with only 500 miles on it and I got another one just like it. Ive put 6000 miles on the new one and it just did a no start last week for the first time. Just cranks and cranks then times out. Shut it off, and tried again and it started fine. No issues since.

[@dietmdew845]

Damn, must make you sick. Now you have to sit and think about that all the time.

[@chitstirer1]

it will do it again, our goes a month or two fine and then will do a big no start, ussually after a long drive, i think its heat related

[@jasonwebster7956]

I have a 3.0 Silverado. Less than 5000 miles. 8 or 10 times I’ve had a no start condition. Starter stops after 20 seconds or so. Then it starts right up on the second try. I think it’s an electric issue. When it doesn’t start it’s when I’ve quick pushed the start button. When I push and hold it’s started every time.

[@Buckshot1123]

I just bought my 3.0 Duramax last week in a 2021 Silverado with 14,000 miles on it, it’s happened to me once so far I luckily was able to stop it from cranking and then I hit the button again and it fired right up. My grandad has the same exact truck, 18,000 miles on it and he’s had it happen a hand full of times. I absolutely love this truck and everything about it so I’m really hoping they have a recall about this and can fix it.

[@michelascottodiluzio3332]

I have 2021 sierra 1500 elevation with the 3.0 diesel 38k miles and this happened to me at 2am at a Sheetz last night when driving back from penn state. Sat there for 45 minutes googling and watching videos before it finally decided to start back up. Hasn’t done it since and I have started it probably 100 times today trying to recreate issue. One thing I also noticed is during the issue remote start wouldn’t even try to crank

[@FlyGuy457]

At this point, I'm not certain that GM can get any part of their trucks right. I know of 3 co-workers with GM trucks all needing transmission work just after the 50k mile mark. GM will not help them at all and it's a costly repair. GM, no thanks.

[@damitbobby6677]

Warranty is out the window?

[@621deezy]

My dad has 220k miles on his 06 silverado 1500. My brother in law has 180k on his 05 diesel. 30k on my 18 1500 and no problems .. seems like ur Co workers need to go to another dealership. The service department will cover it if it's under warranty and just order the part. They don't call gm and ask if it's to expensive, if it's covered they should replace it

[@hellkitty1014]

And the 2021 5.3/6.2 lifter and pushrod issues...yikes.

[@gordonborsboom7460]

If the wheel is hitting the chain that could be a loose chain flopping around. Does it have a chain tensioner? If hydraulic, is it loose at start and not during run. Is it a manufacturing quality problem related to the COVID era? I bet it is not an easy fix. Maybe there will be a Stop Order in the future for this engine. Love these technical updates. More please.

[@troyklassen1473]

I am with you on what would bend the trigger wheel, as the only thing close to it is the chain , with the tensioner being oil pressure fed via the variable pressure oil pump and 0 -20 oil it could back off under heavy load and catch the wheel ?

[@redneck4200000]

Bent from shipping probably came on a pallet of all the same thing the bad batch was on the bottom lol

[@daking8374]

I had my heart set on a Silverado high country with this engine….hope the 2023 models fix this issue because I’d be pissed if I had to bring it in for service @ 10,000 miles. Makes me look at the Dodge Ram a little more

[@dietmdew845]

Damn, I bought a new Sierra with the 3.0 Duramax at the end of March. Haven’t had a single issue but it’s only got 2,000 miles on it. Just did a trip a few hundred miles on 55 mph two lane roads in Iowa and my best 50 mile average mpg was 37.2 mph. I could not have been happier.

[@Itsrang]

That's amazing mpg

[@dietmdew845]

@@Itsrang Yeah, I wish I could post a picture to prove it because I wouldn’t believe it if I read that, but it is true.

[@tonydebusk1211]

Just bought a used 2021 Silverado with 8300 miles on it. No problems until 7/10/23 at approximately 11,500 miles then longer crank twice in one week. Going into Chevy tomorrow.

[@josephharvey5742]

GM just announced they've halted production for the remainder of 2021 for their 3.0 diesel motor. I'd like to see a video with a GM representative explaining what's the real problem. Wouldn't be surprised if they aren't looking into making changes due to know issues with this motor, or stop production permanently.

[@gwot]

They said it's supply chain issue for getting parts, they physically cannot build them, also said they are not discontinuing the diesel.

[@treborheminway3814]

Based on GMs handling of the eight speed transmission problems, I won't ever buy another one and I've owned several of there trucks and suburban's I'm the past. What a shame.

[@zsavage1820]

Don't worry now... FORD is now helping GM fix their shitty trans problems

[@bradmonkiewicz8375]

I had to trade my High Country because of that 8-speed. What a shame

[@charlesreynolds6101]

Don't forget the 6 speed. Worst transmission I've ever owned. Trans oil temp must get to at least 140 to 150 degrees before it smooths out. Unfortunately you have to drive about 30 miles.

[@MrSmurf459]

This actually happened to me yesterday, I legit only have 1700 KM’s on the truck, if it does it one more time I’m definitely going to the dealership!

[@trailertrashtactics]

I have a long crank issue but it turned out to be communication errors rather than an internal engine issue. Maybe caused by my electronic steps plugged into my computer module. I read somewhere that when you're starting your vehicle you should hold the start button/key fob start button until the engine actually turns on. I was having a long crank once a day all week then it would start. Going on 3 days now without a problem holding down my start buttons quicker.

[@rileymoberg4053]

Our new duramax did it once from remote start but after the second start it started up normally. Otherwise we love our new GMC duramax Denali

[@LowsJuan]

When I saw the 3.1-hour number for the lift-cab replacement job it reminded me of a story I heard. Apparently, Mazda had a warranty issue on something and they would only pay the dealership a heavily discounted rate like 3 hours for a 9-hour job. So the mechanics hated these jobs and when this happens quality suffers and things don't get done right. The one thing I would worry about after having the cab lifted was that there are just too many things that could be missed/lost/improperly restored. So you end up with a lesser built vehicle than what you bought.

[@kennethobando5755]

Well as a mechanic, I think a cab off job is better quality than the extensive engine job with the cab on as there is more room to work and easier to see to double check your work before setting the cab down and buttoning everything up.But you’re right too low of labor hours,paid doesn’t bode well for quality of the work performed.

[@frederickflintstone9847]

@@kennethobando5755 The 3.1 hours is only for the borescope inspection. If the wheel has to be replaced, I wonder if they do a body off on a Suburban. The 41 hour for a cab-off job that Tim mentioned seems absurd though. Seems to me, you should be able to R&R the cab inside of 8 hours.

[@lance3613]

Yea, and we all sorry about leftover bolts on the bicycle assembled late on Christmas Eve 😁

[@powderriver2424]

All this boils down to is 1. the future truck buyers 2. current owners. My feelings are that buyers play Russian Roulette when buying any make or model these days. It just puts the level of confidence into the dumper when problems occur especially when people know that they’ve payed a hearty amount for these vehicles.

[@FireRetire210]

My 2021 Silverado did this three times within the first 6 months. The dealership put in a shim after the second time and it did it again about 2 weeks later. About a month ago they did a reflash and it hasn’t happened since. The only difference now is that It takes about a half second longer to start.

[@JoseGuerrero-uh1zm]

Just got the update done everything seems to be working fine good to do

[@ColJonSquall1]

It happens, new designs have new issues pop up, so its best to wait a year or two for the issues to be ironed out, before purchasing. Its the creedo that my dad and I follow, never buy first year, until its been out for a while, so all the issues can get sorted.

[@Pickuptrucktalk]

That works unless they change parts after the first year like they did here. This isn’t a first year engine.

[@wilmarbarrick3194]

Not to put anymore fear in owners minds, but jobs like this can easily introduce future problems depending on the quality and how conscientious the mechanic doing the work is. I personally wouldn't want someone working flatrate doing it on my vehicle. It's way too easy to pinch a wire during reassembly that wouldn't become problematic for months/years.

[@bantizzle79]

Completely agree. Once you start taking all these things apart the chances of them getting put back to how they were when it rolled off the assembly line is slim.

[@juanfo7307]

Shops slap parts on and throw it out the door as fast as possible

[@we3k1ngs12]

Just bought a 2021 with 8000 miles on it I had a no crank first day ,yesterday, I do remember not holding the button in. I’m keeping a tight eye on this situation

[@gregoryf9299]

One of the forums i read mentioned the starter problem may seem random because that piece’s initial position is the cause. So if it starts cranking when it’s in the “wrong” position, then it doesn’t fire up (sorry I’m tired and can’t find the right words, haha). It would make sense then that the upgrade some mention in these comments that appears to delay the start by 1/2 second is done to reposition that piece so that the engine will start more reliably. What gives me hope is that it sounds like MOST of these issues happen then the engine starts the next time. The scarier issues are when the engine just quits or doesn’t start at all but that doesn’t appear to be the case with THIS issue.

[@danielgamez9167]

Hello Chevy Family ...I Purchase a 2021 Silverado RST last December it happened like 4 times between 2 to 3 k . Nothing until 8 K several times ..i was worried but kept it because i love the MPG 30 on hwy 21 in the city. Again, no problems until 17500 it started doing it constantly had to let it GO !! Loved the truck but not happy with dealer... would not do anything at all.. My advice don't deal with the issue and trade it in Good luck !!

[@michaely936]

My 3.0 has done this once so far. Glad they put the 5yr 100k mile warranty on the 3.0 powertrain. GM has ruined the 5.3 and the 6.2 now the 3.0 is turning into a dud. This is my last GM vehicle.

[@MrSmurf459]

Happened to me yesterday, I haven’t had the car for 3 weeks! I wonder if I’m eligible for a new car!

[@lc7917]

Family member had a AT4 with the 3.0 duramax and it spent 2 months at the dealership because it would not start and the dealership “could not figure out why”. Never heard if they diagnosed the problem but he now has a 2500 AT4 with the 6.6 duramax. Hopefully he has better luck with the new one

[@repairvehicle]

You forgot crankshaft breaking problem

[@jd1172]

I don't understand why anyone would trade in a lemon for the same brand of vehicle. It's like getting food poisoning after ordering the spicy tuna at a sushi bar and then going back and ordering the salmon roll.

[@repairvehicle]

@@jd1172, when you're brainwashed or on drugs then you cannot make wise decisions

[@spamfried894]

@@jd1172 I've done that before. The sushi was just too damn good.

[@fredwalker839]

@@jd1172 bow tie loyalty ?

[@sheriffmedic1]

I've had this problem with my '21. Seemed to be more frequent in warmer weather. Did it with remote start and dash button. Dealership just updated computer to latest software per service bullitin. Instantly noticed change. Used to fire after about 3 cranks. Now it fires up after 5 cranks every time. So far so good after reprogram.

[@JoseGuerrero-uh1zm]

That’s the way they all crank normally it a deisel truck glad you got the issue fixed I did the same

[@RjBin-xz2um]

Happened to my truck today 109 miles. Just picked the truck up yesterday.

[@icare7151]

Definitely waiting for next generation 3.0l Duramax

[@bobbysharp]

I own a 2021 Silverado LTZ, Z71. This issue has happened 3 times. I thought that maybe I was releasing the brake at the same time as pressing the start button. It has always started on the next press to start. Also I thought maybe I'm not allowing the truck to wake up sort of speak, so I wait a few seconds to start the truck after entering the truck. I purchased this truck and the diesel to tow a 7000# camper. I also drive it every day. Pulling the camper with this truck package is awesome. We pulled it with a 2003 Tahoe before and the power difference is awesome. The longer wheel base makes is much more comfortable. Now my daily commute (23 miles) is through small towns, stop and go, red lights not many areas for cruising. And I average 25 - 29 per commute. This also depends if the A/C is running and regens. A regen is a cycle that cleans the Particulate Filter. I've noticed a regen occurring around every 300 miles. Over a tank for these trips I'm around 26 -27 mpg. With 12,800 miles on the truck and towing at times in that mileage I've averaged 22.3. This is the second trip odometer calculating this mileage. I bought my truck knowing some of the issues that have been documented since 2019. There is risk with anything in life but I can say this is an awesome truck. I have a friend that is 6'6" and he has lots of room in the back seat. Crew cab not a double. The gripe I have is the Regen Cycle. The driver needs to know when this is about to occur. Or give the driver an option to skip at least once. I've gone on short errands and it has started a regen. The next trip it will continue that regen. I don't keep driving till it ends. Some folks say it's best to do this but I don't. Another gripe is not knowing what gear the truck is in. It would be nice to have a visual of what gear the truck is in when pulling a heavy load. I talked with 3 other owners at the last campground we were at and they have had no issues. One gent said this engine is GM's best kept secret.

[@justinschnepf674]

I just had my truck in for this issue. The technician did the brutal inspection and found no issues. He then performed the 0.5 mm shim fix to the camshaft position sensor. Time will tell if that was a true fix or not.

[@SingleSpeederLife]

any updates?

[@justinschnepf]

@@SingleSpeederLife didn't work. I had the crank no start happen again just 3 days after leaving the shop. GM still has no true fix for this.

[@SingleSpeederLife]

@@justinschnepf Sorry to hear that. I don't understand why it's taking GM so long to figure this out.

[@kevinr5187]

Any update buddy? Thinking of buying one. Thanks

[@Icefisher420]

My 2019 v8 5.3 trailboss has done a crank/no start once. It was -28c and when I tried my remote starter it didn’t start the truck. I got outside put the key in and cranked it, but no start. After 3-5 seconds I stopped cranking but the truck kept turning over. I had to open the door to get it to stop. After a minute I tried again and it started right up but It threw a code, something about low voltage between circuits 1 and 2. I called the dealer and the next day I went out and the code cleared its self. Now the truck is almost out of warranty so I’m hoping it doesn’t do it again. I figured maybe a low battery because it was so cold and the truck sat for a few weeks.

[@tomfagro6744]

This may be oversimplified but, if its happening to both gas and diesel motors what is common to them both? Is it a physical part or program or algorithm in the ECU. Once commonalities are identified, it should be a process of elimination.

[@brett83501]

I have a 2021 Chevy Silverado 1500 with this 3.0L Duramax, and I haven't had a no crank issue or that style of a long crank. It's done this about a dozen. Times now since I've owned it. It continuasly cranks for about 10 seconds but won't fire. Then it basically resets and then I push the start button and it fires right up. I have an appointment at the dealership I bought it from here next week so hopefully they can figure it out.

[@colton7846]

Tim, why can't GM push out an update to put a time-out on the starter. If it doesn't ignite after say 3 seconds (instead of 15-20 seconds), it should stop cranking.

[@Pickuptrucktalk]

I’d imagine they want a longer crank in cold conditions. If they shorten it, it might address one issue and create another.

[@kendrick5909]

Modern starters can handle long, hard starts every now and then. If the engine isn't running right and starts hard but starts none the less, then I'm fine with it. With the push starts, I'd rather it keep trying rather just cut out after 3 seconds.

[@clintgault3078]

Vehicles have had a 15 second crank time out for years now. If a person has never had a crank no start issues they would not know this existed. They are letting it crank long enough to start if there is an underlying issue but not crank so long it damages the starter or starter circuits.

[@colton7846]

@@Pickuptrucktalk these vehicles are rated to minus 22 degrees fahrenheit before you're even suppose to plug in the block heater. If your vehicle doesn't ignite within 3 seconds, you have a whole other issue.

[@spunkysandoval]

My 2021 GMC Sierra 3.0 did this long crank this morning. After that, it fired right up like normal on the second start. Freaky

[@arnoldelliott5695]

My truck is going in Thursday. Apparently they're putting a shim behind the trigger wheel or the cam sensor. Who knows.

[@alainlavoie1961]

Hi GM as a fix for that last oct 28 a software correction has been announced

[@Pickuptrucktalk]

Link?

[@maxh4782]

@@Pickuptrucktalk TSB PIP5823B, people from the forums said it takes about one second longer to start, but haven't had any other issues with it so far. I want this truck and was looking into issues before buying

[@waxycaliburner7822]

There’s always gonna be that atleast 5% of vehicles that have problems. Never had 1 issue so far with my 2020 3.0 . I also have a 150,000 mile full bumper to bumper warranty tho also so I’m not worried about anything

[@adamy9260]

You sure that's not just your power train warranty? 150,000k bumper to bumper seems unlikely. Either way, you are covered!

[@waxycaliburner7822]

@@adamy9260 yes I’m sure ! It was cheap to less than 1,200$ . To me 1,200$ is worth no worries for 10 years

[@adamy9260]

Wow that is awesome and good to know! Definitely a worthwhile investment for just $1200 extra.

[@raymondbdanner6303]

@@waxycaliburner7822 what warrenty company put me in touch with them

[@waxycaliburner7822]

@@raymondbdanner6303 CNA warranty

[@kevinstone9825]

I am done with GM after 35 years of loyalty..just got my 2018 Silverado back after 2 1/2 months waiting on a 8 speed transmission..ordering a Ford this week

[@ednorton47]

Get a Tundra.

[@mr.commander3947]

In despite of 100 years history of engine technology, new modern engine still break down, , it happens all the time with all engine manufacturers globally., some have less troubles than others, anyhow, anything mechanical, electrical, they all wear out, break down, common sense. but in this case, obviously that you can see the cam phase bracket wheel is too thin, unable to sustain the heavy cranking impacts in a long run, that's the reason to cause it warp, it needs to be more robust, bigger size at least thicker metal to build the bracket wheel to be stronger.

[@lesphilaja5722]

2021 Silverado 3.0, built 02-21. 6,500 miles. Cracking issue sometimes multiple times a week, then no problem for three weeks. I’ve been to two dealers, one three times. Even played my IPhone 19 second video I recorded. Both dealerships said if we can’t pull-up any codes or duplicate it we can’t fix it. I’m concerned about the longevity of my 3.0 and the fact that it might not start on the second try and I’m in some remote area. I love the mileage, my best 50 mile segment is 37.5. Normally it’s 27-30 mpg.. GM the ball is in your court!

[@jray8427]

I’ve heard this issue happening, thankfully I do not have this as of yet anyway. Mine is a 21’ that was built in Aug of 20’. From what I’ve seen most with this issue where built in 21’ which would lead one to believe it’s supplier related. Either way this is the exact reason I decided to lease too many unknowns on reliability.

[@dietmdew845]

Go ahead and flease buddy. The bankers love idiots, that’s why they have jobs.

[@paulm6481]

Ahh my God, I am looking at getting a Tahoe RST with the diesel. This video really is scaring me. Damn.

[@larryfry5401]

I wouldn’t worry.

[@daves1646]

The key will be what the cause of the damaged/bent cam position ring is that’s causing mis-synch error. Engine control computer will refuse to start due to mis match of cam and crank timing (as it should!). Been a few cases in HD Duramax’s, but usually attributed to incorrect reassembly during service or rebuild. If you hear about a cause, please add info! Thanks for the heads-up!!

[@anthonygasparini1734]

Tim it's a Big Issue when it's Your Truck! 3x's is a LEMON LAW! Time to dump that ride!

[@Pickuptrucktalk]

That's crazy. Hopefully the new diesel design fixes that issue.

[@petekiser6185]

I'm having same issues 5 times now within 26,000 miles. I can say the issues have only happened when using start button in cab. If using remote it hasn't happened yet. I can tell you this is the last straw and last gm vehicle. It is going down the road today.

[@Pickuptrucktalk]

Did you take it to the dealer to get reprogrammed? There's a fix for this.

[@patrickc6137]

This has been happening on my 2021 Sierra at4 3.0 duramax. It has happened over a dozen times since taking ownership. No luck with dealership correcting. In my case it the starter will activate for 15-20 seconds with no start. I can not stop it and have to let it run its course. After it stops I will push the start button again and it starts right up. My big concern is what damage is being cause to starter or other parts in this process.

[@bantizzle79]

Wow imagine the labor cost once your warranty is expired. Yikes

[@Pickuptrucktalk]

Oh that’s a “just buy a new truck” repair.

[@bantizzle79]

@@Pickuptrucktalk Absolutely... 1st time it started the long crank I would be at the dealer trading it in.

[@markpontes4457]

It maybe only a 3.5 he repair I know a Ford mechanic says it's only about 1 hr to take the Cab off. If there is a TSB it should be covered even if warranty expired. If it happened to that guy twice I think the issue can happen to all of them, apparently there putting the same piece of Junk part in all the engines!

[@bantizzle79]

@@markpontes4457 hopefully GM issues a recall so owners don't have to pay that bill.

[@wilmarbarrick3194]

@@markpontes4457 TSB may or may not be factory covered. Recalls are as they generally are considered safety related. Either way, a one to two year old vehicle is by age. I don't think dealer would deny claim under mileage, but you never know.

[@trpblr]

I have a 2020 Denali purchased at the end of Jan 2020 currently have around 25,000 miles. I've had this randomly happen 3-4 times, it's very odd and annoying when it happens, but I don't think about it that much.

[@Pickuptrucktalk]

Definitely annoying.

[@matthewholzmueller6292]

It's a problem that all manufacturers will continue to have until they realize that sending products out to be built by someone else is a short term gain but long term downfall. Vertical integration allows you to oversee quality, availability, and integrity of your product. Although the cost upfront may be higher, the damage to the brand is unrepairable It used to be that 80 percent was produced in house and 20 percent was outsourced, now it's the other way around.

[@raymondbdanner6303]

Ha happened to me 4 times in 4200 miles, biggest thing is a bit embarrassing when everyone hears it spinning over so fast with no attempt to start. Then after it times out, or if you drop it in drive while it's cranking it stops and refires instantly with no roughness or hesitation. I find it hard to believe it's a bent part as it would happen almost every time then? It's very intermittent and I would not hesitate to buy another even if they never get it fixed, as long as it happens as infrequently as it does. Mine has a build date of 5/21

[@joehebeler3066]

I agree as long as it doesn’t start happening more frequently. I’ve had mine since mid April and have about 5500 miles on it. It has happened three times now. And every time it happens it fires right up on the next try. There is no way in hell I’m taking it to the local dealership where they can barely perform an oil change and tire rotation right and have them tear the cab off to change a part out in the back of the motor THAT MIGHT NOT EVEN FIX THE PROBLEM. I can only imagine how much more shit would be messed up during that complicated of a job. Ironically, the first time it happened on mine was immediately after I was checking the round 7 pin plug in the back of the truck that my boat trailer plugs into. I accidentally touched the circuit tester to some metal while it was touching one of the pins and it created a small spark and ended up frying a turn signal fuse. I hopped in the truck to start it and it cranked for 15 seconds and wouldn’t start. Then fired up on the next try a couple minutes after I got out and checked things over in the motor/fuse/battery area. The next two times have been totally random but it still fires up on second attempt. At this point I’m just layin in the weeds and I want to throw a huge thank you out there to all of those guys that are offering their trucks up and are being the guinea pigs. It sucks that you might have to be without your truck for a month but somehow, some way they need to get to the bottom of this. I Hope it’s an easier fix than the cab off method that’s for sure…

[@Jaymepenni]

Mine has 4500 and it has done it 3 times as well

[@raymondbdanner6303]

@@Jaymepenni Sometimes if GM knows it's a reflash problem they cant release it till that truck has been out for a full model year because of emission regulations. ? possible?

[@chaddelk5940]

Seems like I’m hearing a lot of issues in the 21 GM models compared previous.

[@billbader92]

Makes the idea of swapping in a cummins 4bt in my old c1500 more attractive...

[@fsuftball1]

Ive had this happen twice. I believe it to be electronic. First time it did it with 1000 miles, i was driving home and the radio froze up so i turn it off and try to turn back on long start.. tried again and it started right up. Other time i jumped right in and pushed the button faster than normal and it did a long start, then again started right up after. 9000 miles and 24.6 MPG love the truck.

[@jonh0130]

Seems like its a late 2020 and 2021 model issues. Mine has done it 4 times already under 4000 miles. What I've noticed is it happens after a decently long drive then you turn it off and turn it on again within 10 minutes it'll do it. Not a key for issue either as many people claim it'll happen regardless of startup option. Never occurs with the autostop though

[@raymondbdanner6303]

Your description matches my experience, 5 times so far 5200 miles, lets hope we hear the shim fixes the issue

[@screamineagle1240]

I had a similar problem (long crank then it started every great now and then) on a 2017 Chevy Malibu Premiere with a 2.0 4 cyl turbo gas engine. A computer refresh solved the problem for about one year. When it showed up again, I decided to sell the car.

[@davidgottfried4333]

Had this happen with just over 1000 miles on the truck. I didn’t realize it was a common issue. Will Chevy do anything about it though, or just tell me they can’t duplicate it and do nothing? That’s my guess.

[@michaelcurrie6008]

2020 rst 2wd diesel engine never had any problems on a 300 mile round trip average mpg 36. 4 top mpg 50 mi. 44.8 1500 mi so far

[@alexandermckay8594]

This whole year has been a constant shit show for all the manufacturers. Supply chain issues, supplier issues, infrastructure issues. I'm sure all of them would love a do over. It's going to be the thing in years to come to just avoid anything made in 2020-2021!

[@frankmonaco413]

I have a 2021 AT4 3.0. The no start issue has happened 5 times in 5 months 6,000 miles. Always starts right up the next try.

[@asakim6717]

Count me to the list. Today was the first day my 2020 GMC Sierra 1500 AT4 (3.0L Diesel) did exactly that… long crank no start…

[@rayserobinson622]

My 3.0 has had a long crank 3 times and then I kill it and then it will start. Pretty annoying at 4.3k miles

[@jeffporter7846]

My 2021 3.0 did it about a week ago. I have 10,500 miles on mine.

[@wildstang3062002twp]

15000 mikes on my 20 3.0 duramax pulling a 10,500 pound camper and it has been flawless … maybe I got a good one

[@paulhorvat8750]

I have had the over run-on starter three times now, dealership tells me to push start stop button to stop starter, that does not work, it keeps turning until it stops on its owe. I seem to get the run around when I talk with them , no one knows what that problem is , he tells me, I will have to copy the SB number off your video and tell them to look it up and go from there.

[@hnwhite21]

My Sierra AT4 started having this issue at 450 miles and does it once every 40-60 starts.

[@daniejw]

‘21 Sierra Denali 1500 3.0. 3500 miles. Happened to me twice at random before 3k miles. Truck started on the next attempt both times. I’m waiting for GM to figure out a CORRECT repair before I take it in.

[@reedbeardsley2572]

They should make a part that stops the Starter after so many seconds

[@gordonborsboom7460]

Is the 3.1 hours for inspection only? Would seem likely if boroscoping through the sensor hole and having the turn the engine by hand.

[@jsa310]

I have over 16k miles on mine with zero issues.

[@fixintoo7194]

I have 42400 miles on my 2020 Silverado. Thankfully no problems 😊.

[@fixintoo7194]

Update 53231 miles. Check engine light just came on. This thing drinks Def fluid like it’s free when towing my Can Am sxs.

[@kilowattspower471]

Bought a new 2020 3.0 diesel off the lot was great the first 30k miles until blowing up due to a bad weld on a bolt sending it through the engine block. Always been maintained by a GM dealer and maintenance completed before exceeding or going over mileage, fuel filter life, etc. Purchased an extended warranty as well with it being a first year engine, I had to fly home after the engine going in the middle of nowhere without a rental provided by GM (which they promise to provide in this situation) been back and forth with GM directly as well as the dealership (finger pointing between the two) who replaced the motor. When I flew back to get the truck it ran hot at 240 degrees drinking six gallons of coolant shutting off A/C the entire trip and has only been a nightmare with GM ever since. When its all said and done I've had many GM's however after this experience I will be going to the dark side and purchasing a Ford. Apparently I spent 65k for something that has spent more time in the shop that what I purchased a new vehicle for 🤮

[@Pickuptrucktalk]

That’s terrible.

[@adrianciaramellano3825]

I planning to buy a new Escalade with this engine! But this is a big worry.

[@Tanneritefilledfido]

The long start happened to me 3 times so far and im still under 3500 miles with 113 engine hours

[@israelalvarado1695]

Same here.

[@chavador1982]

This same with me..

[@williamwright4708]

Bought mine March 21’ done it 3 times including 3rd day I owned it. Always starts right up second try. Dealer had not heard of problem either.

[@adamratliff3590]

I’m twice and 2100 miles. I also need to take to dealer because the shifting is so hard in the low gears.

[@sergioramirez360]

Hello everyone , have any of you had any luck with dealer fixing long crank start ??

[@Mittencarpentry]

27,000 on my 2020. No problems. Going to go knock on some wood though.

[@toddbunnett640]

I have this motor in an 2021 AT4. It’s done the no start once around the 1500 km mark and hasn’t don’t it since. The truck is at 6300 km. This motor is awesome. This no crank thing is, in my opinion not something that would stop me from buying a vehicle with this motor.

[@Dave2four]

Maybe weather contributes to the no-start issue.

[@nathandunman4559]

18,001 as of today. I will trade mine this week.

[@captmichel8035]

I have less then 9,000 miles on my 2021 Silverado and it happened 3 times 1-2,000miles 1-4,000miles 1-7,000 miles it does it once then start after the failure right away ? Thanks to your video for sure I will mention it to the dealer my next visit, so far not impress with the dealer I have in Naples FL, I will drive further north to get better service.

[@lawn2learn]

My 2021 has not done this since I refilled my Def fluid. It has done this to me like 4x. It’s has also long cranked from the key phob. 11,000 miles now.

[@VictorMarines06]

Same issue. Truck has just under 4K miles and have experienced it about 8 times now.