On the window sticker of my 22 Silverado "CREDIT - NOT EQUIPPED WITH DYNAMIC FUEL MANAGEMENT." Think she's a keeper.

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.

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.

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.

this is what is stopping me from upgrading to a new truck , good news is the 2005 silverado is still running great

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).

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.

With the chip shortage my 22 gmc is full time 8 cylinders and I'm not mad about it

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.

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)

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!!!!!!!

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.

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

So i bought a brand new chevy in 2002 with the 5.3 when it was called the vortec. I sold it at almost 200k and it was still performing great. Regular maitenance, and changed the water pump, that was it. I absolutely HATE cylinder deactivation. I have hated it since it came out. I have had two chevys and 1 dodge company vehicle and they have all had it. Its the most terrible thing ever besides diesel after treatment. Thanks for the video. Love the info.

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

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 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

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.

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.

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 keep hearing people talk about issues but I have a 2019 silverado it has 292 thousand on it and it's a lt but it's my work truck and it does not have a issue pulling a load that's 2300 over what I should be pulling behind it . just got back from a job in Florida . drove it from Maine to Florida pulling a 10000 psi water blaster . I can't complain.

I just bought a used 2019 Silverado 3 days later the engine had a failure. The lifted started to sound loud and the truck started to shake. It would drive just ruff. Good thing that I had the 500 mile 15 day limited warranty. Saved me about 3-5k in repairs.

My 2001 chevy Silverado 5.3L has 275,000 on it. Outsideof basic maintenance the only thing Ive had to repair has been fuel pump and radiator and a little ac work. Truck has been an absolute beast, will be very hard to move on from when its time

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 🤞🏻

I have a 2011 5.3 1500 extended cab with 168,000 miles and nothing has gone wrong except a cracked coolant line. Oil changes every 3000 during the first 100,000 miles and every 5000 after with high mileage oil used. Great truck. Just wish the bed wouldn't rust so fast

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.

Great video, love it. I love meeting guys in the forums and groups who buy 2nd and 3rd gen 5.3 trucks to lift them to the sky and dump money into the thing but ignore the preventative maintenance points. Then they complain about lifter failure and other issues

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.

I have a 2008 5.3 Silverado and I got 204k out of the first engine before the lifter failure I put another engine in it and had a tuner turn off the AFM so it runs on V8 mode all the time It had very little effect on my MPG and I love the constant power

Seems to currently affect around 2% of the total number of engines in the 5.3/6.2 line up.

The lifters in my 2015 Silverado 5.3 went out 2x. The first time was at 63k. GM refused to honor the warranty because it was 9 months over. I replaced it and it went out again within 300 miles. Fixed it again and traded it in. I changed the oil every 5k on the dot. My truck was a DD but had low mileage due to me having a work vehicle. I went and bought a 2020 Tundra. I’ve always been a GM fan but this left a bad taste in my mouth. The high pressure fuel pump was also going bad right before I traded it in, it was stalling randomly and it’s a pain when you’re in traffic.

On my old Silverado once it was past the warranty, I bought a $500 tuner and deactivated the active fuel management

I have a 2004 GMC 5.3 and it is fantastic. Heading towards 400,000km with nothing major so far other than normal maintenance.

I installed a canned tune and de-activated active fuel management on my 2012 Silverado with 5.3 engine when the truck had less than 100 miles on the odometer. At 150,000 miles no lifter failure, no oil usage, ran and idled well.

I have a friend with the six leader that had this happen to them. Now I myself have a 2007 Chevrolet Avalanche with active fuel management and I am at 240,000 miles. No problems so far!

I just had to get a remanufactured transmission at 136k miles on my 2015 Silverado. But the engine has been bulletproof so far. Fingers crossed it stays that way.

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've got a 2018 with 200,000 km. Regular oil and filter changes every 9,000-10,000 km. No issues so far.

I can say out of the hundreds of the 5.3s we have in fleet, we haven't had any lifter failures or oil consumption issues. I think the issue has become more apparent as trucks get used more as a commuter vehicle and end up jumping between afm being on and off constantly. Drive it like a rental and no problems lol

Very unhappy GM owner of a 2016 Silverado 5.3 with already had a injector go 11000 miles and that’s what’s on the vehicle today. It’s very disappointing that you have a vehicle that you cannot trust it it’s like you’re driving, a vehicle of undependable an expensive to repair vehicle not a new vehicle and it’s very sad and disappointing. All these motors should all last 100,000 miles without any issues at all with regular oil changes from the factory recommendations. Awesome video.

My 2007 GMC Sierra 5.3L consumed as much oil as it did fuel. About four quarts between oil changes. The problems with it drove me to buy a 2019 F150 5.0L. And, it’s the best truck I’ve ever owned.

I have a 2021 GMC with the 5.3 and and had to replace all the lifters and a couple bent push rods at 6,200 miles. GM did give me a 100,000 warranty with the repair

You can thank Government CAFE standards for forcing the OEMs to come up with junk like AFM/DoD.

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.

Bought my 2008 new, got 276K out of my 5.3 , put a remanufactured 5.3 for 10K…….still rolling my ‘08, 323K miles, factory transmission 😊

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.

Part of the reason the lifters fail in the new body style trucks (19NBS-current) is the new DFM system GM introduced. DFM (Dynamic Fuel Management) is different than AFM(Active Fuel Management). DFM can disable more than just 8 lifters on the same 4 cylinders. DFM can disable 2 cylinders or 4 on any cylinder based on engine operation, up to 17 different patterns. GM did have issues with lifters in the early LT based engines(14-19OBS) part of the issue now is they have double the amount of faulty lifters in each engine making it more prone to early failure.

I have A 2016 GMC 5.3. The LIFTER IN NUMBER 5 CYL. TOOK OUT THE CAM AT 55000 MILES. That lifter was a standard lifter. I was 3 months out of warranty. I was using Mobil one with Mobil one filters and changing at 5000 miles.

I would advise having the deactivation system deactivated . I did and oil consumption cut down to less than half and runs a lot better now.

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

It's not just the AFM lifters. If you change mechanical valvetrain to remove AFM and non AFM lifters, you still have those plastic lifter guides. Still going to drop valves at high mileage. Need to trash the plastic guides and retrofit with lifters that are connected with the bar guides. If you don't do this, you still have a blown motor at less than 300k miles.

If you can get your hands on a GM 6.6L GAS… your opinion would be appreciated.

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.

Had a 2007 gmc with the 5.3 with the cylinder deactivation. Gave ot to my son at 226,000 miles. Still running with no problem. She uses a quart of oil between oil changes.

I still have my 1979 ford half ton and is still going strong. When my newer truck needs repair I go to my old ford. Wish they still made strong trucks.

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!

At the end of the day the gen 3 and gen 4 4.8/5.3/6.0/6.2 are incredibly reliable engines. The best part is they are about the easiest engine to work on your self. The only other reliable truck engine i would have and have currently is the ford boss 6.2 in my super duty. High mileage and I beat the hell out of it towing every single day. Zero issues.

"AFM" and "DFM" = EPA. My brothers 2021 Silverado was sitting on the lot and after he looked at it the dealer said they would sell it to him but it was missing the DFM CHIP due to Covid supply chain issues. He called me and I told him to buy it and DO NOT allow them to install that chip. Happy to say he's been driving it with ZERO issues. The AFM/DFM does not increase your MPG and if it does it's only like 1 extra MPG. I know what can happen as I owned a 2011 and 2013 that both had the engines replaced. 2011 at 16,000 miles and the 2013 at 43,000

I challenge you to tear down the top end of any direct injected 5.3 and any 99-06 ported injected 5.3 and show people the difference in the amount of carbon build up. Even fuel can impact carbon build up, as well as a Tune-up. Change the oil every 3k miles. I have ran my 2000 5.3 400k plus miles and only replaced the cam and lifters to get better performance at 200k miles. Old cam and lifters looked great and did have a first start lifter noise. It makes over 300hp and gets about the same mpgs. Adding long tube headers, removing the cats, and deleting the secondary 02's is next on my list. I hope this provides 1-2 more mpg. I really want to go back to a Turbo 400 and Gear Vendor OD.

I installed the Range Solution chip in my 2015 5.3,, .in the port under dash so it keeps it in 8 cylinder and never have any issues,, plus I change oil every 3000 not the 5-6000 mile intervals they say,, oil is cheaper than metal..

2015 and 140000 miles. No lifter issues yet so I put an electronic bypass in the ocb port that deactivates the cylinder deactivation. Truck shifts better and actually feels like a truck of days gone by. I still get 19-20 mpg on the highway.

I've had 3 GM trucks: 2001 - with 5.3l 280k km 2007 - with 5.3l 300k km Now 2012 - 5.3l 220k km and counting Didnt have any issues with AFM (luckily) Did oil changes every 5000kms. I'm confident that with solid oil intervals and quality oil you can get full life out of the engine. My biggest concern on my current 2012 is the 6L80 trans...

The 14-current 5.3 shares almost nothing with the older 5.3s other than the displacement.

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 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.

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?

i have a 2015 silverado and she has been getting synthetic oil changes every 3000 miles with no problems so far, my 2002 was great too

Boy, does this sound familiar! I experienced a lifter failure on my 2021 Silverado RST with the 5.3L V-8. I had 7400 miles on my truck. One of the first warnings that I had was a “service parking brake” message along with a “service ESC” message on the DIC. In my 7400 miles I had three oil changes, always with synthetic oil and a fresh filter. The oil changes were done by the dealership where I bought my truck. After diagnosis of the problem, it was determined that cylinder #8 had a collapsed lifter. I was getting the ticking sound and rough idle, too. I had read that early fixes done by dealers was to pull only the lifter that had failed. In a lot of cases, another lifter would fail in short order. My truck was built in a time frame that GM told dealers to replace ALL lifters if one failed. This is what my dealership did. While disappointed in GM with this continued problem, I can’t praise my dealership enough. They had ordered parts to fix the problem and had the truck back to me in two days. I had heard of parts shortages because of the number of trucks experiencing this lifter problem. I too, would recommend a 4000-5000 mile interval for oil changes. Thank you for the video that helps explain the problem.

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.

I bought a 2008 Silverado Z71 5.3 Flex, Vin Code 0 back in 2013, 1st thing I did was put an Airaid Cold Air tube to the Stock Air box, put an E85 Tune and Deactivated the AFM, I run Nothing but E85 with High End Oil and AC Delco Iridium Plugs, 245,000 Miles Later and Still Running Strong, and if the engine goes bad, I'll just go to my local Scrap Yard, Buy Another one for $250.00, put a couple hundred into it and Slap that Puppy In. I would Never Buy a New One!

The '99-'07 5.3 and 6.0 are the best gas engines ever made.

I got a plug in to stop the cylinder deactivation lost a little fuel mileage but no deactivating

My 2007 and 2013 both used oil like crazy. My 2013 had the cam shaft and lifters go at 48000 miles, thank God it was covered in warranty. Lastly they were total rust buckets. My 13 rotted away so bad that it would no longer pass Pa inspection. That's why I switched to Toyota. I bought a 2007 from Denver, rust and problem free. I'll never buy another GM product. Over engineered junk. My 2001 Silverado with the 5.3 never had a problem. P.S. I always change my oil at 5000 miles, plus you had to add two quarts between changes. Yea that's normal.........

Tune out the AFM, your mileage will also improve. Use the GM top end cleaner, clean it up. Put on a catch can. Get an oil sample done, replace the HPFP if fuel is detected. Run Rotella T6, use a Wix filter, forget the oil minder and change every 5k miles. We have several '15 - '19s with 300k miles at work. Problem solved. (Do the same thing for the 3.6 Pentastar if you're Italian. Also get an aluminum oil filter adapter installed.)

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

My 2016 4.3 ran great . Not one issue in 170k . Sold it and got the 2021 5.3 with no cyclinder deactivation because of all these videos saying how bad they were. Im calling BS . Maintain your vehicle has always worked for me.

I have 2011 silverado 5.3 with 163k miles. I've used the oil life monitor to change oil averaging around the 7,300 mile mark using Mobil 1. Early on, I installed the Range AFM disabler because I didn't like the way the tranny shifted during highway driving. Unknowingly, this may have saved me from the oil consumption and lifter issues. The next gen 5.3 after mine changed to GDI that will lead to carbon build-up on the intake valves. Ford did this to one of their Eco-Boost and gave absolute indigestion. They changed to a duel GDI and GPI design that seemed to resolve the carbon issue. With the recent GM announcements of the new generation of V8 motors for trucks and SUV, hopefully, they will incorporate a dual injection design. I speculate the new gen V8's will probably debut in the recent announcement of the next generation of 2025 GMC and Chevy 1/2 ton trucks. Hopefully, they'll fix the lifter issue and oil consumption issues as well. The technology design changes over the last 3 decades have presented new issues. This will be something we'll have to live with across all vehicle manufacturers due to EPA restrictions and expectations.

I would love a video on the 6.6 gas Chevy 2500. We just purchased one and would love to hear some opinions about it. It’s been great so far. Just did the first oil change @ 3k. Noticed the oil level was a bit low but it was the same when we purchased it.

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 would use good oil (not synthetic) and change it every 3,000 miles. This recipe has work for me for more than 30 years.

I have a 2017 Chevy Silverado 4×4 crewcab LTZ . At about 150,000 miles I had to replace the transmission, then 2 months later I had to replace the engine due to a lifter that literally scored the block . Now understand I chnge my oil every 3,000 to 4,000 miles with a Napa oil and Napa Gold oil filter , I also use 1 quart of Lucas oil treatment which I have used in vehicles for 30 years.I called GM because I found on line that they have couple of lawsuits for lifter issues in the engines and transmission issues. But they refused to help me .

i had a 2000 gmc 5.3 i got 245,000 miles before replaceing the motor, since then i have had 3 different years 5.3, all three of them where ready to be replaced after 100,000 miles

I'm surprised the oil pickup tube o-ring didn't make the list.

on any DI engine an oil catch-can plus regular oil changes (5k) is gold; my 5.3 has 2k on this oil interval and the dip stick oil looks new, the crap in the catch can looks terrible.

I had the 1st Gen in an old 2000 model. Higher miles but lifter tick ruined the push rod and rocker arm, replaced those...still there. Go to change the cam and lifters and it had a spun rear cam bearing. Cam would only come out one journal. Also low oil pressure issues related to about 6 different things on the engine. Bought a 2011 Silverado. Low oil pressure issues, screen changed 3 oil sending units (even GM units). Cam bearings likes to push out causing the low oil pressure as oil relief valves. Same with newer models. I've owned mostly GM products in my lifetime, I'm in my late 40's. Stepping away from GM. All engines have their issues but I'm done with GM's issues they keep churning out.

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.

5.3 litre engine is one of the most reliable V8 engine's out there.

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.

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.

As soon as i buy my Vehicles i change the Oil and Only run Full Synthetic Oil in it and the Best Filter, and ive never had a Problem at all..... So far my 2020 Trailboss is Running Awesome, only thing i had to change was my Heater Blower motor in the cab it went with only 63k on it

1st gen had piston slap under 45 degrees f. I had an ‘02 and it had me concerned. Never had any issues with it but I only owned it for a few years.

The front end looks crazy nice! Love it. Can't even open the hood. Lol. I'm out.

I change my oil every 3000 miles. Always have. Our 2019 traverse with the 3.6L DI engine has had 0 issues other than the high pressure fuel pump and the purge valve going bad randomly about 3 weeks ago or at 52,000 miles. We also have the injectors and intake cleaned every 25,000 miles. Because of the direct injection. Engine is clean and has just as much power as day one.

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

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.

I had a 2013 GMC 2500 with the 6.0L Vortec. Ran Royal Purple and K&N oil filters in it every 9000 miles it's entire 110K life. Never had a problem with it. I just couldn't deal with the sweet 11-13 MPG hahahah

I just bought a 2023 Silverado rst z71 and now I’m scared.

I have a 2015 Chevy Silverado 1500 5.3L V8 Engine 184,900 miles no major trouble normal wear and tear repairs just used for work no towing I guess I got lucky.

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