Chevy Silverado 1500 5.3L V8 Engine | Top 5 Issues **Heavy Mechanic Reviews**
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- Опубликовано: 29 сен 2024
- I Review a 2022 Chevy Silverado 1500 with the 5.3L V8 LS Vortec gas engine and explain the top 5 issues with this engine. I explained the major issues and problems with these 5.3 liter LS v8 engines over the years and detail what exactly is causing these known issues. Is the 5.3L v8 Chevy engine a reliable engine?
I hope everyone is having a wonderful week! As I mentioned at the beginning of the video I was hoping to have a ram 2500 with the Cummins this weekend but those plans fell through so I got this Silverado and figured I could talk about some common issue with this very popular v8 engine.
the so first major issue and what I think is the most important issue is the lifter failures on these engines. it all seems to stem from the active fuel management system or the cylinder de-activation system which uses engine oil to control the lifters. what can happen is those lifters can become stuck and ruin your cam shaft. this is an expensive and time consuming repair and the worst part is the newer trucks seem to be more prone to this large issue.
the second issue on the newer trucks is the consequences of having direct injection fuel system. this can result in carbon on your intake manifolds and valves from your EGR. the second issue is that the injectors seem to be failing at a faster rate then the 5.3 v8 engine that are not direct injection engines.
the third issue has to do with the second gen 5.3L engines. Oil Consumption was a huge issue for these engines and there is a class action lawsuit still again gm for this issue. basically the cylinder de-activation was letting oil pass through the intake and burning it. the other issue with heavy oil consumption is that your spark plugs will foul pre-maturely.
the fourth issue with these engines is with the 1st gen. they would have heads crack and internally burn coolant. they also would have intake manifold gaskets fail. but that seemed to be more based on longevity of the engine.
Those are some of the major issues with this gm 5.3L LS V8
As always I hope you enjoyed the video!
On the window sticker of my 22 Silverado "CREDIT - NOT EQUIPPED WITH DYNAMIC FUEL MANAGEMENT." Think she's a keeper.
That helps but the same lifters are still there though significantly less chance of issues
Still happens, my job site require my truck to idle for at least 3 hours a day and the oil pump at idle don’t make much pressure and lifters fail, and the other trucks we have in my company don’t have afm and don’t idle as much and still have those issues together with their transmissions, 5.0 or 2.7 ecoboost from ford work better no get 3.5 that is very powerful but is not very reliable, the ram 5.7 just select the gear limit on your steering wheel and the AFM gets disable and no issues at all, just a pain to do that every time you put it on drive but we changing our fleet from 100% GM half ton pick up trucks to only 10% the rest are fords now, less problematic, and heavy duty trucks are 50% súper duties and 50% ram 3500 and 4500 I hate to leave chevy behind but I do it for the business success, I can’t afford to have them in the shop every month or less
@@jesuslozano5468 I wish you luck. Ford has very similar issues. Shame on GM for allowing loyal customers to pay the bill for engineering mistakes.
I have a 2018 5.3 AFM. I live in the north east and the AFM seems to be a bit useless. Everytime It goes into 4 cyl. mode it has to go into 8 cyl. mode cause of a hill. Sometimes I think that it wastes more fuel than it would if it just stayed in 8cyl. mode. The 6 speed automatic transmission has a very minute buck to it when climbing hills as well. It's almost like it gets confused if it should drop that half gear overdrive gear or not. Personal I think that that the transmission could drop that half gear just a little bit sooner instead of waiting until the moment it gets confused then stomping on the excelorator peddle a bit to get it to drop a full gear. Then again, the slight bucking could be the engine as well, who knows. So much stupid crap in these engines now days. As if a V8 doesn't have enough moving parts and they have to turn around and add more damn moving parts to wear out and fail..
@@christophermcmichael880 my2014 does exactly the same gear changes as you so perfectly described :-) but god bless engine has been perfect with no issues 178,000 miles
I bought a used 2017 Chevy Silverado with 46,000 miles and immediately deactivated the AFM then also did the sure cool transmission thermostat delete. Changed all fluids front to rear. Hopefully i make it past 150,000 miles before any serious problems
I own a 2014 5.3 Sierra. I have put 125k miles on it. I also have 37x15s on a 8"lift with a 4.26 regear. I offroad, tow, and go in the snow. It has seen abuse. The only issues i have had so far was the catalytic converter going bad around 110k, and i broke the timing belt. My a/c also went bad around 110k. Overall I love the truck, and 5.3 has yet to let me down.
I had a 2021 trailboss that had the 6.2. I always had the oil changed at 5k miles and the dealer took care of that. Lifters failed at 16k miles. I told them I wanted to trade in and lease. I don't know if I will ever actually buy a GM ever again. They know about this problem and they dont fix it. Its honestly mind blowing.
I have a 2019 5.3L, 68,000 mi getting new lifters after cylinder 1 failure as I type this comment…. Changed oil every 5000 miles running full synthetic. And have the well documented 8 sp transmission shifting issues. Good Grief! Great Videos btw.
I am looking at getting a ford 2019 f 250 or a 2019 chevy z71 with the 5.3. What is your opinion?
@@TheGorgeramirez Stay away from 8 speeds
Love the information (also in the comments for sure) i bought my son a starter vehicle 2003 sierra for 1000$ from a friend and have only changed the water pump. Hate the AFM and am very glad it doesn't have it. Almost to 300k!
those early 5.3's are great engines
I have a 2010 GMC 1500 Sierra. I bought it new and change the oil every 5000 Kilometres. I am now at 190,000 Kilometres on the truck and it runs like a top. No oil consumption what so ever. I changed the plugs and wires at 175,000 K and the plugs looked great! I am lucky as I must have a good one but I have always changed my fluids. As someone else reported, I am just disappointed in the rear wheel box rust.
I’d love to see a deep dive into the modern dfm system on these engines. I lucked out and my 22 had it factory deleted, but from what I’ve read it only seems to be an electronic delete and the mechanical bits are still in there. I’d be curious if you or any viewers are able to definitively identify what’s different about these dfm-less motors and how that affects risk of failures.
Following
Its a software delete, it still has the dfm lifters.
Gave a 2016 Silverado Lobe Star. One of the best trucks i’ve ever owned. I keep up with maintenance and dont dog it. 57,000 miles mow
I had 14 Silverado I installed the AFM delete ran a few years no problem traded it in for rst you know the first thing I did picked up range technology dfm delete I I get my oil change between three and four thousand miles
I lost a lifter in my 2015 5.3L at 40,000km, replaced under warranty. Another one went at 200,000km and it needed new cam, lifters, oil gallery etc. I just bought a low mileage 2014 5.3L and put it in, instead. I used to change oil at dash reminder, usually around 10-12,000km but this time, I'm changing at 7500km. If I lose this motor, I'm rebuilding without cylinder deactiviation. I still love the truck.
Changing oil based on the oil quality sensor is a really bad idea, this crap should never have been put in vehicles
I have a 21 Silverado 5.3. Just hit 60k miles and not a single issue in 3 years EXCEPT it now seems to be drinking oil. Last oil change I told the dealer the low oil light came on the past 2 oil changes. They told me I only had 5.5 qts drain and they put in 8 qts to fill it. I always change oil 5k miles on the dot. They started an oil consumption test and I have to go back after 2k miles. Starting to get concerned. I’m not sure how major the issue is. Starting to think about trading out of this truck.
I have a 2017 5.3 L83 Silverado and I use the Range Technologies AFM disabler and it works great. Only problem is I have to unplug it about 5 days before state inspection because the readiness status has to redone or it fails the emissions test. Other than that it's been great. I get a kick out of people doing 7500 or 10K oil changes. I'm still old school and do mine every 3000 miles even with using full synthetic Dexos oil. I also added a Pedal Commander to get the butterfly to open up a bit quicker. Much better throttle response.
What is a Pedal Commander?
Lifter failure is a massively over blown issue on the internet. Most of the failures are due to poor maintenance. The new body style DFM system had a bad batch of lifters in early 2020. I've worked for GM dealership for 10 years and we've probably seen 20 failures in 10 years. Considering that we've sold thousands of these trucks in that time frame. The failure rates are not high.
My 2015 silverado ltz 5.3 lifter broke just out of warranty.
The '99-'07 5.3 and 6.0 are the best gas engines ever made.
Agree
I have a 2009 LTZ with 264,000 miles. To me, that is amazing, and I have owned it for 13 years. I change the oil at Walmart and use their synthetic blend whatever the hell that is, every 3000 miles. I have had a tick a couple times and used a quart of Marvel Mystery Oil and the tick goes away for years. I think the key is the 3000 mile oil changes. On my Corvettes, I use Amsoil, but on this truck I just go to Walmart.
I have 2006 GMC Change Oil with Mobil 1 S 5000 are 6000 miles I have 250.000Th runs like day I bought it, I love 5,3 hope keep GMC keeps makeing 8 cylinders
I have a 2009 silverado with the 5.3 with 241 thousand miles, and no issues with the engine. I pull boats regularly too. But, I do change the oil regularly. And I do use the recommended oil and filter.
For a $125, I bought a deactivation that plugs into the port under the dash, so it runs on all V8 cylinders, all the time. I have a 2015 GMC Sierra crew cab Z71 with 216,000+:miles. I lost 1 mpg. I change my oil at every 7500 miles, with full synthetic oil.
5.3 litre engine is one of the most reliable V8 engine's out there.
Yes until 2006, when it was Vortec 5.3 V8 not anymore.
It’s junk motor DOD.
1st gen only
Up until 2014...
Nobody is driving that old trucks, except me 1999. However 11-13-2023 i am purchasing a 2019 Silverado, rst only 16.5 miles, so i need to be aware of this deactivation thing.
These car manufacturers have been making engines for over 100 years, how can this happen?! Even Honda has had major design flaws.
I own a 2017 Chevy 5.3 I’m at 112k miles, no problems at all with the lifters.
One of my neighbors had the same truck for a yr this year he’s driving the new ford truck diehard Chevy fan but idk
Excellent video. I'm looking at a used '22 work truck with the 5.3L with 25k on it. It still has some warranty and I can buy it for 23k. I think I'll risk it. I change my oil every 3k miles on everything I own. And I'll bypass that AFM system.
change the trans oil every 5 years and ur fine
I have a 2015 with the 5.3 and it's in the shop now with lifter issues
I'm telling you this is about changing your own oil. My latest Colorado came with free first oil change. I never in my life. These guys don't care at all about you new truck. Heck I have found oil filters brand new with coating over the gasket and stuff in filter . I think many problems are sabotage.
Change oil every 3K unless you are running a total synthetic oil which is at 5K. Plus you need a special oil filter if you are running synthetic.
what special filter
@@Tom-ic7hw Napa and Mobile have a special filter for synthetic oil
@@jamiecorley1700 👍
I run my 6.2 in L9 all the time just to keep it out of cylinder deactivation mode. Always change oil at 6k miles.
If a Harley Davidson motorcycle won't fit in the bed with the tailgate shut I don't want it. My 2005 Silverado standard car V8 fits the bill. It has 71k my only issue is my air conditioner leaks and needs a charger now and then. I change oil every 3500 mile since it was new. Im looking at a newer Silverado but maybe not.
I can't wait for the towing test with the 5.3L
I bet the difference with the lifter failure being more common is the 2019+ engines are dynamic afm and shutdown any number of cylinders. So all the lifters are afm. As opposed to the older engines being 4-8 only on afm. It's definitely a lot to do with the fact it's critical to have good CLEAN oil. The oil change interval was too long. Plus using 5w20 oil vs 5w30. I think it's breaks down too much. Its an issue with the 6.2 as well. I don't think it's an issue on the smaller 4.3 and that uses 5w30 as spec.
I agree that the old Chevy 350 and even the 305 and the 4.3 v6 were the best engines on the road. I’ve not been a Chevy person ever since Chevrolet first went to the vortec engines. I was a die hard Chevy person, but not any more. These new chevys have too many problems. Not just the engines but everything on them.
Hi, I'm from the government and I'm here to help...
Yep You been F--k--g things up since 1968 , & we don't build them ! But we will just regulate how it should be done 😂😂🤣🤣🤣!
Just asking for your opinion, I have no affiliation with any brand. I really don’t care what it is. I just want to reliable truck but the brands that I’ve been looking at it’s out of the Ford with a 5.0 coyote engine in the GMC with the 6.2 or 5.3 it doesn’t matter which would you say would be the better engine
I had a 2004 it was rock solid. Once they got rid of the cast iron block and added AFM the engines are garbage IMO. No way I would buy a Chevy now. I have a 2018 Ram 2500 6.4l engine and I have worked the hell out of it commercial oilfield work and currently at 150k No issues, but I think the Tradesman 2500 did not have MDS. As of now if I went out to buy a truck I would get another Ram with a 6.4l before its gone. Ford is a crapshoot especially with the eco-boost. You either get a good one or a bad one. GM you just get bad engines and that goes for all of their products except for the Vette. I hate it too because I was 100% GM until about 2007 they went to crap. I do like the Toyota Tundra and I know within a couple years it will be rock solid. They have really went after the 1st year re-design issues. I know Toyota they will perfect the new engines until bullet proof before moving on to a new engine.
Difference between old and new is AFM vs DFM. More cylinders are cut off un newer 5.3's. Also, change oil every 3000-3500 miles. Every 5k miles and rings will start sticking, and you will start consuming 2 quarts of oil between changes. GM says 2 quarts is normal, which is crap. Just dont want to fix the issue.
The owners manual says check the oil every 200 miles! They will without doubt, point to the owners for not doing "due diligence"....
I just bought a 2024 Silverado and they still haven’t fixed that problem 5.3 eco trek bad lifters
Valve springs are failing on these engines also, my buddys 22 trail boss lost a spring at 2000 miles
I sure would appreciate your, or anyone else's opinion, on the 5.3 without DFM in a 2023 GMC Sierra, with a 10 speed transmission? Why couldn't they leave old reliable 4 speed trannys alone!
The reason why the l84/l87s are experiencing more lifter failures then the l83/l86 v8s is because when the gm truck platform was updated in 2019 the v8s got an updated afm tech called dfm. It allows more cyclender to deactivate and I believe the cyclender that fires at that period of time it changes cyclenders rather then keeping the same one or two cyclenders firing. Not 100% sure about the last part.
What was missed about the direct fuel injection is that a catch can is basically required to keep the valves cleaner
Aaa yes the GM lifter tick had it on my LQ4 4.8L but it did not start ticking until 278,000 miles!I had a cracked head on my LQ4 and it started slugging the oil. But that did not happen till almost 300k is the 5.3 still a iron block with aluminum heads? Love the videos!
i’ll keep my 2013 4 x 4 hd2500 6.0 gas guzzler 🇺🇸 210k zero issues
It is not the exact same engine technology-wise. For a mechanic you should know that GM changed the technology. It is not AFM in this truck or any current truck. It’s DFM. They changed the technology after realizing the cold spot issues. DFM now chooses which cylinders to turn off in milliseconds rather than just shutting down the same four. Which caused cold spots (With AFM). That caused the metals to become weak and in turn caused lifter failure. I’m not saying that DFM fixed the lifter issues. I’m just saying the tech changed. With the DFM change they also changed the metals they used on their lifters.
That said from 2019-21 the metals used within the lifters were quoted from GM… “Soft”. They definitely were having quality control issues. They did issue statements on all this, by the way, and you can ask any GM technician at any dealer and they will confirm this. This was all fixed in 2022 with the refresh. No they do not currently all have the lifter issues, considering you posted this days ago and you brought in a 21… the one most GM techs saw during all the mayhem. An estimated 220,000 units. This was all addressed by GM. They extended warranties for these vehicles and have changed the metals.
Does this mean there will be no lifter failures. No. It means there won’t be many early on in the life of the vehicle. It’s a GDI engine. As long as you maintain the vehicle as some one stated here with their fleet… you should be good. It’s not perfect but you are putting out information that is not correct.
And if you read my comment below yes it sounds like I'm shiting all over the 5.3.... but if you really want to put some horsepower through your 5.3 L and astronomically increase its reliability just do an AFM delete Cam and lifter kit. Because the lower ends on 5.3's are incredibly Stout.
I have this truck. Just got to 21k miles now it started burning oil
Best Engine management deactivated
Or Engine failure
2019 and newer 5.3's can deactivate any of all 8 cylinders when needed. Previous versions can only deactivate 4 .
did not now that! maybe there is a coincidence between this "newer" AFM and the recent lifter issues.
@@TheGettyAdventures , GM calls it Dynamic Fuel Management. There is no Pulsar type units for the "refresh" engines yet. Many of us are anxiously waiting for the code to be cracked. I think the new code is called Global 3. I've done a lot of research on this stuff. Along with auto stop / start DFM, DOD, this is the dumbest most complicated waste of an engine ever! The older LS 6.0 was amazing, some lasting 400K. The Tundra 5.7 V8 is one of the best engines ever made from my reading.
Nice truck. Im looking for a used Pickup 4wd Which trucks are most dependable without major problems and recall. Anyone with suggestions vshoot em my way
LS series engines were actually introduced in the fall of 1998. The Vortech before that was wonderful to be sure, however, the LS is leaps and bounds better in all respects. Smoother, more powerful and MUCH more durable under stress, 50% longer service life, and very easy to work on with a greater potential for less expensive horsepower gains. If you don’t want to have trouble with your AFM, as stated before, keep your oil changed and very importantly, use the correct viscosity recommended by the manufacturer. With the LT version starting in fall of 2013, Direct injection is a huge improvement performance wise over port injection. This process allows a denser induction charge to actually cool and stabilize the combustion process, allowing for higher compression ratio‘s which produce more power and better fuel economy.(all usually on regular grade fuel) To make the system work long-term it still needs to be supported additionally by a dual injection system including port injectors. Toyota uses this system on all of their cars and trucks. Ford has started implementing it also with some of their engines such as the coyote 5.0. GM needs to spend the money and do it right. Again, with the price of trucks, there’s no reason they can’t. The famous Dodge hemi 5.7 tick is generally a failed roller bearing in the roller lifter. Not the same as GM. Once you hear the tick, usually the cam lobe is wiped out. On a GM, the roller is still fine and if you get to it soon enough, the cam is usually still OK.
Camaros and vettes got them for model year 98, which started coming out in fall of 97
50% longer service life. There is the problem. Longer service intervals is what is causing all these newer engines to consume oil by 100K. These manufacturers are so worried about cost of ownership. It’s a shame. Change your oil every 3K. THIS CANT BE STATED ENOUGH!!!!!!!!!!!!!!
does chevy make an engine without the deactivation system ?
The negative of DI? Carbon Buildup....by design.....this is why Toyota's engines have both DI and Port Injection....Keeps it cleaner!
As do the ford 3.5 twin turbos
3500-5000 miles MAX on good oil. 7000 plus miles between oil changes is absurd, even with good oil.
Any insight on high quality oil? Picking up my new truck this week.
Ford 3.5 eco boost 5 common failures. 1 the engine throws a rod down the oil pan. Enough said.....
I have a 2015 1500 Silverado with 79,000 miles. I had to take my truck to the dealership where I bought the truck. They put in new cause of ticking noise. I had them install lifters; cost me $4,500. My dealership was no help. Is there a phone number at Chevy headquarters I can help?
Alex is there a chance see you tow with this engine one of these days?
That is a really nice sweater where did you get it !
thanks bud!
Would getting a flash or tune that turned off the AFM, eliminate the issue?
Get a AFM disabler. V8 all the time. Save the engine .
I got my afm turned off around 50,000 miles
Huh, I have 263,000 miles 2002 Chevy Avalanche 5.3 Vortex
Would you recommend the baby Duramax over this?
what is the fuel consumption with 2wd 5.3 engine on the highway?
Which year truck is this example
Another great video! Just a quick note that GM has "AFM" which is the old system, and "DFM" which is the new system. AFM is 4 cylinders deactivaton, DFM will deactivate 2 though 7 depending on engine load. Depending on your trim, even the 2019+ GMs with the 5.3 can have the older system, most use DFM though. Some engines built recently don't have either (chip shortage). Also I think the hemi tick is different than GMs tick, hemi lifter failures even happen on hemis that don't have MDS (like the manual 6 speed challenger).
you are correct John, I was not aware of the update in 2019. but it does make some sense maybe as to why the newer engines are facing more failures then previous ones. And yes the hemi tick is a mysterious beast lol I've been down that rabbit hole. some argue that it's extended idling and an oiling issue, some theories are bad oil. but either way it's a shame both engines are facing the same issue.
@@TheGettyAdventures , Also exhaust manifold bolts breaking are sometimes mis diagnosed as lifter tick.
Have you tested the system using Amsoil Signature Series? In my opinion it has saved my 3 vehicles that have went over 150,000 miles.
Nissan Titan = ZERO DFM or AFM. They let their engines be real engines
This might be the fault of CAFE. American manufacured( ni, not nerely assembled, NANUFACURED) have to meed a corporate average MPG figure. If a gas hog drags it down even by a hair below that target, every vehicle they sell, no matter how economical, will have a $5,000.00 tax slapped on it. For foreign-made, however, only the gas hog will be taxed. Unfair? Yes, but you thank Gerald R. Ford for this. Yes, the same Gerry Ford who pardoned Tricky Dick.
I think you hit the nail on the head with maintaining your vehicle. I’m retired mechanic but there is no cheaper thing that you can do to keep your oil changed. The idea of running till your oil monitor goes to zero is ridiculous. I realize that know matter what you do things fail at times. I have seen this throughout my years in the business. If we are talking about Chevy engines I can think back to the cam problems they had on the 307s way back and the plastic timing gear on the cam that would self destruct. I’m not just picking on GM every vehicle manufacturer had or has problems at one time or another. Hopefully when you purchase a vehicle your one of the lucky ones that doesn’t have a problem child.
Wasn't this AFM technology originated by GM on the Northstar engine in the early 90's ?
I change my oil once a year and I add quarts here and there in-between
Chevy 305 and their soft cams were also an issue.. did many working at the dealership between them and the 5.7 olds diesel was enough for me.. onto heavy trucks never looked back..
Yes, do maintenance. I have a 2004, silverado Z715.3 purchased new. It's my everyday construction work truck
425, 000+ miles original
Eng/ trany. I do all maintenance.
I'm still putting on average 18,000 a year.
Why did they change this set up. It works.
Lots of people on the internet like to claim the oil life monitoring systems are wrong based on nothing but their feelings. Take it to an oil lab and find out. Btw sae says aged oil can have better wear properties than new oil.
You can thank Government CAFE standards for forcing the OEMs to come up with junk like AFM/DoD.
this is what is stopping me from upgrading to a new truck , good news is the 2005 silverado is still running great
My 05 Silverado is still going with 260k miles on it altho oil pump went at 215k so I had to replace the engine with a junkyard one. Rusted to hell, all kinds of issues but still getting me around. Brake lines had to be replaced at 250k.
I have a 05 w 97k on it. Had a few issues knock sensor, master cylinder. Other than that truck is going strong. I don't plan to get another truck until I have to. I don't have 50-60k to give away for a USED truck
2019 2500HD is the last year truck you could get with the first gen LS 6 liter motor after that that they went to the 6.6 gasser. The new trucks are such a risk with the AFM,8 and 10 speed transmissions etc
My 2004 silverado 1500 5.3 Z71 purchased new in Nov,03.
Just passed 430,000. Only work is a water pump at 380,000. Still original trany.
I do all maintenance on schedule. This truck has never left me on the road.
Wish they would duplicate this truck and produce it again.
Best part my spare keys run me 8 dollars. No heads up display.
I've replaced alot like all light housings, dash cluster, head liner. Posy third member, abs hubs"snow country" ect.
Still everyday work truck, I'll drive this baby anywhere and
Forever.
I have a 2005 Silverado z71. Michigan truck. Daily driver. 230,000mi, rusty, A/C is ice cold, 4x4 works, runs and shifts great 😂
1st generation 5.3L owner (2006 GMC Sierra) Love this truck... Not for sale... Ever! Zero oil consumption, 300+ HP (plenty), 6 speed automatic is Wow super-nice! 20 MPG on trips which involved a sizable grade up and down each way and @ 70 MPH, 18 MPG for home/usual driving (not bad). I use Mobil one oil + Mobil one filter which I researched for particle "and flow"
Not for Sale!!!!!!!
I have 2006 day I pick it up Mobil 1 heavy shocks have 250,000 run like day pick it up.
@@magdolnanagy7342Awesome!
The old 350 wasn't the best ever but was cheap thats why they were cheap. Chevy's trade mark has always been a lifter tick for decades.
Chevrolet means Cracked Heads Every Valve Rattles Oil Leaks Every Time.
Don't worry I'm not Chevy bashing, I have two 02 5.3L. I'm not brand loyal to none.
Great video, but I've gotta correct the record because I've dealt with them... The lifter failures that were occurring with the GM LS engines with AFM/DoD equipped was actually a lifter collapse.
Here's how the AFM/DOD lifters work. The computer monitors for when the engine is working the least and can shut down cylinders 1, 4, 6, 7 "displacement on demand" hence the DoD. The computer then activates the VLOM(Valley Lifter Oil Module) that sends engine oil into the special lifters found on those cylinders. These lifters are unique in that they are two piece lifters with locking pins and a spring on them that allows the lifter to collapse onto itself when oil pressure is sent to those lifters from the VLOM.
Oil pushes in the locking pins on the lifter, the lifter can now collapse on itself, and the lifter is allowed to ride on the cam without transferring that movement into the pushrods and then to the valves. Once the power is required, the oil pressure is released, the spring pushes the lifter back to the fully extended position to its full size, and the locking pins snap back into place. The movement on the cam to lifter is now transferred to the pushrods, and the valves open and close.
The failures: The failures were happening when lifters in the DOD/AFM engines were being 'activated' and then they would not return to full size (extended) because of debris in the oil, oil starvation, lifter wear, etc. So now you have a lifter that is remaining collapsed and no movement is being transferred to the pushrods. The fix was expensive in that getting a lifter out involved removing heads, etc.
There is a simple workaround to avoid this problem. Use a tuner to deactivate the AFM/DOD and ensure that your lifters never do the contract and extend thing. I deactivated my AFM/DOD at around 60,000 miles on my 2009 Tahoe and am now on 230,000 miles.
The oil consumption was tied to two issues. The first one was the location of the PCV valve on the left valve cover when facing the engine. There is a replacement one that GM introduced down the road to prevent this. The second oil issue is because of the oil pressure relief valve located in the oil pan. This valve was required because the AFM/DOD required higher oil pressures to deactivate the lifters, so a relief valve was needed to relieve pressure above 60PSI. The relief valve was spraying the oil up into the bottom of the rotating assembly and pistons, causing excessive oil consumption. GM made a part that fixed the problem. It was a plastic shroud that installed over the relief valve to deflect oil back into the pan.
Excellent explanation! I think all this crap sucks! Us V8 guys want all 8 cylinders all the time! At least I do.
That’s why the Gen 3 engines were better, IMO
Thank-you great post! What do you think about replacing the VLOM oil filter.
Why then the failures at 5k miles on brand new vehicles?
@@insideoutsideupsidedown2218 I’m not sure on those failures. Can you be more specific on what’s failing? Are you talking about collapsing, or are these grenading like the Ford lifters?
If you can get your hands on a GM 6.6L GAS… your opinion would be appreciated.
That’s a totally different animal definitely would be a good video
I would love to get my hands on that!
@@TheGettyAdventures , the 6.6 liter has no DFM.
face it GM will sell this shit engine with this cylinder deactivate crap just to sell trucks that get a little better mpg
My 2007 Silverado has the optional " 5.3 Litre " Hi performance engine, this engine was only offered in the 2005-2007 model years. The most significant differences from the standard 5.3 engine are that the BLOCK IS ALL ALUMINUM and it has a higher performance Cam Shaft. I am not sure whether the Lifter Problems of the Standard 5.3 apply to this engine but my own truck is not showing signs of lifter problems at 255,000 KLM.
Seems to currently affect around 2% of the total number of engines in the 5.3/6.2 line up.
Are they reliabke?
With the chip shortage my 22 gmc is full time 8 cylinders and I'm not mad about it
Same as my pre-owned 2021 GMC 1500. Love full time V8 as "default build". smiles.
That probably doesn't have any effect on the lifter issue. That simply means you don't have the DFM module but you still have the same lifters. The lifter failure is caused by the valve spring failing.
350 TBI for the win. My favorite chevy/gm engines. I also can't believe how modern manufacturers set their maintenance intervals. Change your oil every 3-5k miles
That was a reliable/torquey engine. Too bad it ran out of breath around 4500.
I had a 350TBI in a 93 chevrolet with 77 thousand original miles and it was absolute ass. Every weekend I spent my entire day outside in the blistering heat fixing, repairing, and replacing parts on the truck. Eventually sold it and got something better.
Yup. I have a 1994 1500 350 TBI it's never not started...313k miles and the engine has never been opened not even the valve covers. Great truck I'd drive it anywhere
@@robcrossan6274 Similar to my 1997 Silverado with the 350 engine. Great motor.
@@semperparatus3188 I just sold my 94 Silverado 1500, it had 320k miles on the original engine and the original transmission lasted till 310k miles. It was the most dependable vehicle I have ever owned. It would use less than1/2 a quart of oil between oil changes when I sold it.
2019 silverado with 58k and DFM. Maintenanced like hell with mobil 1 syn. Did moderate weight towing approx. 3000-3500 lbs. Seasonally. Lifters needed replaced on passenger side (under warranty). I heard the driver side going too. Traded it in. GM trash.
The 14-current 5.3 shares almost nothing with the older 5.3s other than the displacement.
Is this a good thing or bad? I’m looking at a 2015 with the 5.3
The 2020s for sure are uglier
I agree, I had 3 pickups (all 3/4 tons) with 350 engines drove them all over 200k, with no problems. I had a 2000 3/4 with a 6.0L--known as the "cold knocker" g.m. decided to eliminate skirts on pistons about 3 years--yet drove it over 200k, and no problems. Had a 5.3 in a 2004 no problems. I then bought a 2016, and drove it 40k, no problems but heard about the lifter issue and sold it. Now have a dodge with a hemi--no problems, but again it is not that old--took out the extended warranty--100k, 8 year, 100% everything and no deductable. There is a search you can do "GM lifter lawsuit", you can find some reading about their lifter issues(that's why I sold the 2016--because driving less now being retired and knowing the extended was going to be up). However the last 5 trucks, I always get an excellent extended warrenty, even though, I not really used them much, in the days of expensive repairs, it just gives me piece of mind.
I have had great luck, I had a 2002,2007,2013. 2017 and put around, 150000 on all of them and never had not 1 problem with any of them. Now I'm driving 2020 which will be my last truck
i’ve got a 04 5.3 1500 with only 130,000 miles and i have to say the engine is definitely out living the body ( I live in New England)
If you know you are gonna tow under 5,000 pounds, just drop ur ego and get a Ridgeline. All ur problems will go away!!
Excellent information presented clearly and concisely. From a guy who just bought a 2014 GMC Yukon XL SLT with the 5.3L, I thank you.
I bought the range technology tuner which makes my truck run on 8 cylinders on my 2021 5.3 and so far have 46k and running better than new. Also I change my oil every 5k miles.
Did the same on my 17 57k miles
I went from a Crown Vic to a 19 with a 5.3. I hope I don't regret this. Seriously.
So if I religiously change the oil/filter every 4-5k and remove the AFM this truck should last, right?
2001 Chevrolet Silverado. 5.3 385,000 Miles. None of the Garbage on this Engine today. 4 Speed Transmission. I get 16+ MPG. I change my Oil every 4,000 Miles with High quality oil and reputable Oil Filter. Daily Driver and still going strong! Like a Rock Baby!
I have a 2006 Sierra 325k
I got my 6.2 TB in September 2021. So far no issues. I did install a Pulsar LT at 2K to counter the DFM so that may have helped 🤞🏻
Still good?
i have a 2000 silverado with the 5.3L. Has 430k miles on it and still goin lol. I got a feeling its time is nearing though
The chev 6.6 gasser on your list for these reviews?
Another vote for the 6.6 gasser!
Three votes!
Yes the 6.6 is a highly likely review. just have to wait until I can lock down one from my truck dealer aka enterprise lol
@@TheGettyAdventures if i remember correctly you're in new brunswick and if thats the case, i have seen some 6.6 gas at dealer lots here and there. save you the daily rental, if thats your arrangement.
Just got a 2019 GMC Sierra and the first thing I did was buy a Ranger. It’s a device you plug into your ODB port and it turns off the cylinder deactivation and Stop Start feature.
I had the DOD turned off via hptuners on my 2014 5.3. I also installed a catch can. I only drive it about 3000 miles a year and change the oil at that time.
Excellent video. I have a 2014 Silverado, High Country. Love it. Currently 136,000 miles in 9 years. 0 engine problems yet. 95 % of miles are highway. Average of 20 mpg on highway. Found out was recommending synthetic blend oil, but could not find out % of synthetic. Changed oil to Mobil 1 at 500 miles, and every 7500 miles. Have never added a quart of oil. Never used more than a 1/2 quart between oil changes. Am now changing oil every 5000 miles as of 130,000. I have never had a engine code *money light*. 3 a/c issues. 2 compressor failures. Replaced. Condensor replaced due to leak at historical wear weld in drivers side lower corner, at 130,000. I have 0% rust in undercarriage, or anywhere else. No salt on roads during winter. Sterling, Colorado.
Mine is a 2010 5.3l. 230000 miles with AFM, no AFM issues so far. The recommended manufacturer oil change intervals are 7500 miles. No way I'm going that long on oil change intervals with AFM.
I have a 2011 with 285 000 on it, with zero engine issues. I believe people are not sticking with dexos oil and timely oil changes.
2014 Silverado 198k no engine issues, change oil ard 15% to 20% oil life monitor.
You guys are scaring me from buying anything new, or even less than 10 years old. (You guys include several channels ). You provide a great customer service. Thank you.
These guys make money off of pander to fear. Do your own research. Besides my GMC has a 100k warranty.
Not just the new trucks. I have a 2011 Sierra and same thing. lifters are ticking and metal in the oil. trans just started failing too at 140k miles
If you need a truck, buy an old tundra.
Yeah my GMC had a 100k warranty also! Never hit 100k miles, but I did have a broken lifter, bent rod #5 & broke rod #7. GM has become trash & they know afm is an issue!
He is not wrong, my 2019 chevy tahoe with 65k miles is in the shop right now due to the lifters. This companies are trying to cut cost extremely low and having difficulties now. I honestly will lease the car/ trucks until i see this cars come up with better options and reliability.
Bought a '22 Silverado with the 5.3 a year ago without AFM. After all of the lifter issues, I'm glad GM started removing this feature out of this year truck.
GM did not remove the feature lol, it is not equipped, because of Covid, and the parts shortage. That is not on every truck though. Most 2023 have it.
You still have the same lifters that are failing. All that means is you don't have the electronic module.
I'd love your take on Toyota's new V6. I haven't been able to pull the trigger on going to the twin turbo world. I was leaning towards the Duramax but I love how reliable my old tundra has been.
The new Tundra still suffers with MPG. my neighbor said his get's 1 MPG more than his old one with the V-8 and his turbo's keep going out. Isn't the turbo but the chip that controls it
I have the same issue 733 . I LOVED my V8 Tundra ! I keep hearing different results on the MPG on the V6 . And if the MPG is within 1-2 MPG of the V8 . Toyota has F'd up big . I am considering a Titan .Good luck on whatever you decide .
WTF would anybody listen to a HD diesel mechanic about a chevy pu .