Pulsar LT - LIFTER FAILURE Protection? Silverado DFM Delete & Tune

Pulsar LT Installation on 2019 - 2021 Silverado / Sierra (Trail Boss / AT4). Game. Changer. This thing is DIALED!
Big fan of this so far. RIP Fuel Mileage.
Check out the Pulsar LT product from the video (the one I bought): Linked in products!
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#TrailBoss #Silverado #PulsarLT

[@tylerbrickles4016]

I love the little dude in the background he’s just doing his own thing

[@LonestarHawaiian]

Little man is always up to no good 😅

[@SteveFortna]

Ours just experienced the lifter issue. Left us stranded in a bad spot 200+ miles from home. 6000 miles on the 6.2 engine when it went down. Towtruck driver that finally got to us, knew right away the problem. Towed three already this year. We like the truck, don't want to sell it, but don't want to get stuck like that again either. Subscribed!

[@LonestarHawaiian]

Sorry to hear that. It’s such a good truck, sad to see what harm small faulty part can cause

[@RedCapMan]

Hey man just wanted to say that I have a 2019 Silverado and watching you’re videos have made me smile and relaxed, been stressed lately like everyone in the world. I’ve done small mods here and there and always enjoy to see what you do next. Keep making great content man peace out. Thanks for making me smile 😀

[@HowtowithPaulHenderson]

Sorry for the very late reply, I still have my truck and so far as of today 11/9/2023 I haven't had any more issues thanks to the pulsar LT

[@DanielSoucy-r6s]

Just bought a 19 z71 rst

[@ChrisDIYerOklahoma]

Just ordered mine for my 2021 GMC Sierra AT4 (6.2L). I also found a local fuel distributor here in Oklahoma that sells 94-octane...on my third tank. This trucks ROARS with 94!

[@tenncutt]

You do realize. That higher octane has less power than regular gas. Look. It up.

[@ChrisDIYerOklahoma]

Depends on the engine/compression. The owner's manual for this truck says to run 93 octane for optimal performance, acceleration, and fuel mileage. Running 93/94 octane DOES exactly that. In other cars/trucks not set up for high octane fuel...93/94 does nothing.

[@JohnD0129]

I went ahead and installed the Pulsar LT on my 2021 TrailBoss 6.2. And wow 🤩 this truck feels like a truck now. Makes a huge difference. I highly recommend.

[@rayyanadeel3787]

Can the pulsar LT open the rpm limiter and speed limiter? I too have a 6.2L 2021 TB and this rpm limiter and is really getting up on my nerves :/

[@JohnD0129]

@@rayyanadeel3787 You can adjust the Speed Limiter but not RPM

[@osvaldourias5944]

Would this be better than a Pedal Commander and why?

[@fleafarts3576]

If you are expecting it to keep it from having the lifter failures…It won’t. I put it on my 6.2 AT4 and it’s in the dealership right now with only 23K miles on it. I’m pissed. 🤬

[@robertjr469]

I keep reading that the Pulsar LT does not work on 10 speeds which is what the 2021 Trail Boss LT, 6.2 is... That's what I am getting into on Monday, also about 44K miles. But based on what I'm reading here, it does function appropriately for a 10-speed, correct? That's what your Trail Boss is, a 10-speed right?

[@britond1]

Just ordered this for my truck as well. Excited! I did the same exhaust upgrade you did so exited to see sound difference.

[@jsbigrigdad]

Great video! I make the Pulsar LT circuit boards. Your video is awesome. You do a phenomenal job describing the advantages of having this on your truck. I personally have the Pulsar on my 2019 5.3 L. It's like night and day. It woke my truck up. Thanks for what you do keep it up!

[@rogern5368]

Will the pulsar LT void factory warranty for any of these AFM DFM DOD issues if it shows up when the scan your vehicle ???

[@jsbigrigdad]

@@rogern5368 No, they are currently testing this on my truck. We belive that if you don't change any perameters on the truck with the Pulsar before you take it for inspection (within about 300 miles) it should pass inspection. When you change parameters such as tire size or turn off the DFM, the computer looses the emissions information is what we are thinking. Just like disconnecting and reconnecting the battery. You have to drive the vehicle for 100 - 300 miles so the computer has a log of the emissions. I just took my truck to the dealer and told them the Pulsar was on there. They told me that there is no problem with it. We work closely with our local dealer. When I bought the truck they told me there would be no warranty issues with the Pulsar being installed. That being said, we are still testing the emissions and I will post again on this page when I know for sure what we find out. Also as far is the warranty issue, if you are worried that it will be an issue, remove the Pulsar before you take it to the dealer. It isn't hard to remove it and reinstall it. It's just inconvenient.

[@rogern5368]

Josh what is your 2019 5.3 vehicle ?? I have a GMC Yukon XL ! Is yours DFM ?

[@jsbigrigdad]

Yes it has the DFM. My truck is a 2019 Silverado LT. 5.3L V8.

[@robertthanepohn7559]

How does the Pulsar affect idling? Often when I’m working on my heavy equipment I’ll have my pickup idling so I can have the a/c or heat going for an occasional break from the the elements. Would installing one result in my idle fuel usage going up a lot?

[@amosromero6605]

Bought one two months ago and still waiting on it to get here. After this video I'm really excited for it to arrive!

[@ForTheCorps]

Great video man. I’ve got the 2021 5.3 Trail Boss. Lifters failed at just over 14k miles. Transmission seems to be acting up now. Heading back in to Chevy this weekend😑. Love the truck though, but it is definitely disappointing.

[@jonsheets966]

Outstanding! Just purchased a 2019 TB w/ 5.3L, 30K miles. Was sweating the issues mentioned in this video. Now I know what my first mod will be! Thanks! 👍

[@thomasbartlett5458]

I highly recommend the Pulsar LT. I have had it on my 2019 TB for a yr now and still very happy with it. No issues at all! It’s very easy to install, a direct plug and play, and when I take my truck in for service to the dealership just unplug, and afterwards plug it back in. It saves the settings so no programming it again. Watch out for the throttle sensitivity setting, if you set it on the highest setting your literally spinning tire, especially when it’s raining or wet. lol

[@rashad-tm4zm]

5.3 or 6.2?

[@austinphillips7706]

You mention unplugging it when taking it in to service, so I hope you have insight on my question. Does this void any extended warranties?

[@summondominion]

@@austinphillips7706 they wpuld never know if yoh unplug it...would they But...i got a better tip for you Just shift the truck into L then hit the plus button till you get to 9 it shpuld say L9 on thr dash...this stops the auto stop and AFM

[@MarksTrappingandOutdoors]

I have a 2022 trail boss I ordered with the 5.3 and it does not have the auto start and stop. Does it still have the fuel management system since it does not have auto start stop? Thanks

[@nrxhavoc]

@@MarksTrappingandOutdoors yes. I got a used 21 TB 5.3 in March and mine doesn't have auto start/stop. Chip shortage during 2021. Still has DFM.

[@bendungan2276]

The pulsar lt won’t do anything to prevent the lifter failure, but at 20,000 miles you aren’t likely to have an issue. Most failures are occurring in the first few thousand miles.

[@miguelcarranza184]

Hey ben hry? Do you know if that problem with lifters are on the 5.3 engines aswell?

[@bendungan2276]

@@miguelcarranza184 yes the 5.3’s are affected too. I believe it was a few months of production of the 21 models were affected. Good thing is if it’s going to fail it’ll do it in the first few thousand miles and won’t damage the motor if you immediately take it to the dealership to be repaired.

[@miguelcarranza184]

@@bendungan2276 thank you sir! Last question if i have afm on 2021 chevy trail boss, how i know that should i see a v4 in the dash correct?

[@kkoch666]

Right, you still have the same DFM lifters

[@chrismarbrey9678]

You might be right but I had heard that the dynamic fuel management was part of what was causing the lifter failure but then again it could just be bad batch of lifters

[@mikebecerramusic]

Aye! New fan enjoy your vids. DFW here as well and just picked my ‘21 trailboss last month. Inspirational stuff bruda you’ve got me hooked already running LASFIT 😂

[@spookysage5295]

I’m happy my 2021 Silverado 5.3 LT with borla exhaust was ordered without afm/dfm 4600 miles and running strong, but still have auto stop.

[@VictorMartinez-dv9cf]

have you had any issues? I have the same engine size and auto stop

[@Hayabusa_Rider]

Hey! I just subbed. Just found your KZbin recently. I have a 2020 LT Trail Boss 5.3 which is stock basically except for an AWE cat-back exhaust and a Pulsar LT. Stock 18” wheels with the dura tracs. I saw one of your vids but I can’t find it now and I want sure anyway what the answer is. Here’s my question… what is the performance of the truck 0-60 with stock wheels ? Best pass? I saw you running one with a 6.2 but I wasn’t sure if you had the pulsar on max throttle sensitivity … plus you had non stock wheels. Oh, what’s the catch can? Where do you get it? You have so many vids 😵‍💫 that it’ll take me forever to find this info. Thanks!! Really like the vids I’ve seen so far 👍.

[@loswitdahoodie617]

Have you done a review on pulsar a year or so later ? If not that would be great. Thanks again for this 🙏🏽

[@HRCfan17]

Your costar is the best btw. One good thing coming out of the pandemic is it takes care of all this for you in 2022 as GM trucks won’t be coming with DFM or auto stop start saving you time and money. This is a great product for anything prior though. Great video as always. Go Cowboys!

[@Bradbssargdons]

For 481 bucks I would expect a tuner to do a HELL of a lot more than simply disabling stop/start and bypassing DFM. DANG! How about 75 bucks...?

[@cnovak1994]

I like seeing car wash montages because it distracts me from how long it takes me to wash my vehicle

[@LonestarHawaiian]

😅facts

[@AirRyanTX]

The best way to disable AFM/DFM is to remove the AFM/DFM lifters. Johnson 2110R lifters and hardened pushrods from somewhere like TSP. You still have to tune it out of the ECU, though, and that gets harder and harder with the newer ECU's.

[@sergioruiz650]

I got the 2021 RST Silverado 6.2L, I'm bearly at 12,000 miles. And after seeing this, I'm definitely ordering one.

[@blackwar12]

I have a module on my 2014 sierra with the 5.3, and after a week, the truck is already running way better. no more surging or idle fluttering.

[@deathtrapgarage]

hey thanks for the heads up my friend i bought an 6,2 had two owner and had only 60 clicks maybe this was why then i looked at the 6,2 reviews after watching your video almost pooped my self an kidney with how much people were complain about the 6.2 blown up

[@MINIHAHA1]

Love your videos man. I just bought a 2021 trail boss with the 6.2 clean carfax with 45k on it. I wish I found this video before because I bought the range technology that plugs in to the port that cancels the AFM DFM but that's all it does.

[@fortyfourrobo544]

Great video! I see you have an 08 Silverado, I ask because I just bought a 2012 Silverado 5.3 and I am just discovering AFM? Did you use something similar to fix the 08 AFM? I subscribed. A lot a great content. Mahalo from Arizona

[@Joe-ob5oz]

I bought a 22 gmc Sierra 5.3 x31 and installed the pulsar lt at 5 miles and have had no problems at all. Truck has 9800 miles and runs awesome very good product

[@jimmie2knives137]

I am so envious about this dudes garage. I have a 65 year old house with a "2" car garage that my 23 Silverado RST doesn't fit in. It might fit 2 clown cars. I want a garage like this badly.

[@zieske98]

That dod/afm issue with the cylinders and lifter has been going since the 2014/2015 models, whenever gm switch to the direct injected engines. It's happening on both 5.3 and 6.2

[@HowtowithPaulHenderson]

Yeah my passenger side lifter collapsed at 5,000 miles. It was fixed under warranty. I had to go back to the dealership when they're working on it to get something out of the back of the truck. So I got to see the engine torn down totally incredible the amount of work this guy had to do to install the new parts. This mechanic really did an awesome job there wasn't one scratch or fingerprint anywhere on that paint and I'm really anal about that.

[@justinbarlow1012]

You actually don't need to disable auto start/stop if you are disabling DFM as disabling DFM automatically turns off auto start/stop. It says this in the manual; however, it will look like auto start/stop is still on when you just disable DFM because it doesn't turn the indicator light off. It does disable it though, and the switch becomes useless as pressing it does nothing, the light always stays on. Also someone asked about the limiter, Pulsar doesn't let you eliminate altogether but you can crank it up to 140 I believe.

[@adawg-xn4sj]

Oh my God donuts and coffee Gotta have it soon as I wake up! Love what you doing bro keep it up…

[@_BigDiesel_]

The lifter failure risk will not be mitigated by the pulsar. It’s caused by defective lifters from one specific GM supplier. Lifters can still fail with pulsar.

[@_BigDiesel_]

@Tim Youngs yes. Lifters will still operate with pulsar deactivating DFM.

[@FastSS02]

Another KZbinr LMFSCREW had the Pulsar installed on his 6.2 and he had a lifter failure at 5000 miles. So disabling DFM won't do anything for failed lifters. I've seen more people with 5.3s having lifter failures than 6.2s. Luckily mine was built after the bad batch of lifters was identified so hopefully I don't have this issue.

[@timothybello3156]

@@FastSS02 when was the issue found? So I can see if my truck was made after. Please and thanks!

[@1duramaxhd]

@@FastSS02 the only reason you see more 5.3 than 6.2 is that 80% of these gm trucks are 5.3s

[@andrerice1133]

He didn't have the pulsar installed when the engine failed fastss02

[@ironhead37]

You make a lot of videos where clean your truck before you start doing anything to it. Do you plan on making a video showing your cleaning process and the supplies/tools you use?

[@panagiotiszoras4708]

All your videos are GREAT, does the pulsar also change the cutoff top speed?

[@chrislagro91]

I've got the Bullydog GT tuner on my 2008 Silverado. Love it. Does everything I need it to and then some. Pulsar looks interesting and really similar. May look into that for my next truck I get. Thanks for the awesome video as always!

[@LonestarHawaiian]

I appreciate it 🤙🏽🤙🏽

[@chrismarbrey9678]

I did this to my truck no regrets. It's a good product. Jose would disable dfm and start stop and make a few other little tweaks and I'm happy

[@MtnManMT]

FYI - Pulsar LT did NOT prevent my 21 Trailboss 6.2L from having lifter failure. 10k miles on the truck. Heavy engine knock. Dealer replacing one full bank of lifters since I'm over 8,000 miles (the GM TSB only allows replacing both banks of lifters if the engine has LESS than 8,000 miles on it).

[@jasperkleinjan9955]

Hey! I just purchased a new 2022 1st Gen (prior to 2022 refresh) and am wondering if A) you would still recommend this module, and B) do you still recommend waiting for 20k miles to apply these changes. Thanks!

[@nightstalker824]

I didn't come to talk crap. I really didn't, but now I can't help it. I was interested in a used RST z71 with 20k miles locally. I did a little KZbin research to see reliability, and stumbled upon this apparent common issue. What a joke. What's even funnier is the people who defend GM when it happens to them. In the past week I've seen so many comment like "my lifters went out at 15k miles. I really love the truck, I'll give it another chance.." Fucking priceless. That's like the guys who's girls always cheat on them and they know about it. "I'll give her another chance, she was just drunk and didn't know what she was doing.."🤣🤣. Thank you for your honesty and videos. You and many others have let us know the real deal with these trucks. Sorry man...I'm coming from a Tundra, and I just love the look of these silverados. They are so aggressive looking, but it's a hard pass for me after a week of research.

[@deezl1845]

I have a 2019 Trail Boss and a 2018 Camaro ZL1. So far no trouble with the engine in the truck with just over 21,000 miles. Did have to replace the cam and lifters on my 6.2 Camaro ZL1 at just 22,000miles, warranty of course. Hope I don't have to send the truck in for the same problem. Looks like we have the same taste in vehicles. Love your channel, just subscribed.

[@josephkraft5640]

Yeah your videos make me spend money. I didn't even know about this now I need it.

[@SmokeDawgV]

My lifters failed at 90,000km, luckily I paid for extended warranty without knowing 😅 Maybe I should look into this…

[@roughcountryvertexcoil-ove7666]

I installed the Pulsar LT Range back in December of 2020, after emailing an engineer back and forth with the company. Complete game changer, it was about the same time I installed Borla S-Type Carbon Fiber exhaust and CAI…. 12,800 miles on my 2020 5.3L z-71 and absolutely love driving it! Cant wait to see your truck lifted!!!

[@jacknsaav]

Picked up the Pulsar LT a couple weeks ago after seeing it on some other channels. Most interested in turning off Auto Stop and DFM, but plan to use the tire size and and tire pressure sensor tools as well. Been waiting to put it in until after we (my 3yo grandson and I) install our new Cold Air Inductions Elite that just arrived!

[@chellybean4274]

Going through this with mine right now. Owned my 2015 Denali 1500 6.2L just over month. Tough lesson to learn after the fact 😞

[@chrisdoughtie2148]

My 2017 Silveraldo LTZ had to replace motor at 80K due to failure. They suspect bearings. Oil changed every 5k religiously. Aggravating for this long time GM owner. Great videos. Thanks for the ideas

[@garykray]

Was it replaced under warranty?

[@aaronbelfi8074]

I just ordered the range obd plug in off American trucks for now ..maybe a year of running this I’ll go grab the pulse tune ..I’ll update and let you know how the range plug in works ..thanks for the video I was a day late though lol

[@DownInTX_CJ]

Lonestar your always putting out that fire content. You helped me so much with questions on my 21 Silverado RST. Question it can do all this even for a 2WD Silverado? I can’t stand the auto stop stuff.

[@LonestarHawaiian]

Should also be compatible with a 2wd. I’d check the manufacture’s website to verify though 🤙🏽 thanks for watching!

[@kristajackson9873]

Thinking of getting one for our 2019 suburban. How has this been treating you? Any issues with it? We mainly just want to stop it from going to "v4" (as the dash says) mode when driving.

[@adrienseguin9211]

Does the pulsar also turn off traction control and stabilitrac? Just wondering how your doing donuts in the dirt. Great video btw

[@LonestarHawaiian]

Nope. You have to hold down the traction control button for about 7 seconds. That turns everything off.

[@TEX-704]

I have a 2022 Trail Boss in mind, test drove one yesterday, I priced for an additional 2" lift which will make it a total of 4", 20" Fuel Covert, Toyo MT 305 x 12.50. Steel metallic in color. 🤔

[@danaberman6929]

I added the Pulsar to my 2020 Trail Boss 6.2. I worked great for about 800 miles and caused a fuel rail pressure low code P00C6. Contacted Edge and they sent me an over night label and had it back to me in less than 6 days. Some how the software was corrupted. They fixed, and I reinstalled. I love this thing. Makes the truck drive like it should. Even with a software hiccup, I did not waste on second putting it back on. It is simple to install and simple to set up.

[@cableguyzne]

What was your trucks mileage when you added the Pulsar? I'm at 12,307 on my 2021 6.2 TB. I'd rather avoid the bent rod issue before it even happens!

[@danaberman6929]

@@cableguyzne I had about 8000 miles on my truck when I added it.

[@robertzedeker3234]

I just added the Pulsar to my 2017 LTZ, DROVE 3400 miles and the mileage didn’t change. It has 92000 on it and runs great. Changed plugs an d wires, but fuel injectors are dirty and don’t know how to clean them. Truck idles ruff when stopped. Hopefully I won’t experience the lifter problem since it is now a V8 all the time. The accelerator is much more responsive with the programming thanks to the Pulsar.

[@raymonddurkin]

I just bought a 2021 Tundra without DFM and auto start/stop :). I considered a 6.2l but after watching a few channels break valves and GM admit it's a problem I went another way.

[@MrTimdtoolman1]

GM took their time about issuing a recall fix for the faulty airbag on my 2011 Silverado but they finally did replace it but it took years.

[@Hector-qz5sh]

can you do a review on the diablo tuner!

[@johnnyg9963]

Love the video man !! I have a 21 trailboss it has been at the shop for over 3 weeks waiting for the lifter replacements to arrive ( they were back ordered), mine failed at 3400 miles! There is a TSB for dealerships to replace both sides if one fails I believe either under 8000 or 8500 miles and the build date it from Sept 1st 2020 thru March 31, 2021

[@fletch4813]

Damn i just got my LT 6.2 TB 3 weeks ago from factory. Counting the days i guess...

[@kaivonmortazavi8656]

Since discovery of the collapsing lifters and bent rods, has GM revised/improved parts being used and has the problem been solved on newer 2022 production units or is the problem seen on the newer 2022 6.2L engines?

[@RobertoHernandez-cd9bs]

That's a good question that nobody seems to know, I would cuz I just bought my TB this month!

[@oicu812666]

All the 22 motors, 5.3 and 6.2, still have all the dfm components in them. The computers have been programmed to ignore them. I've done vast research after my lifter fail. Everything from calling the engine plant in New York to talking to ppl at Fort Wayne. Super annoying

[@alanquintana2484]

@@oicu812666 , I am following your comment. Does this mean 2022s are not activating DFM?

[@playbyclay1593]

man I love your truck. I got the little brother of yours. a black z71 Colorado

[@TXMike1055]

Dude snag that matte black Trail Boss sticker on Amazon. Get rid of that red and white. It will look awesome! Trust a fan

[@LonestarHawaiian]

I plan on it!

[@Mr_Tecumseh]

I'm glad my 2013 4.8L doesn't have it. Last year all 8 cylinders fired all the time. No worry about the major issues it causes either.

[@biggiehorn]

Can’t wait to see what’s in store with this thing! Awesome content as always!

[@johnhart1453]

I have been following your channel. Great information! Quick question. Looking to put on the same AVS hood deflector. Do you like it? Does it vibrate the hood as bad as you indicated.

[@LonestarHawaiian]

Thanks for watching! It shakes pretty badly when you get up +65mph. I no longer have it on the truck

[@allwireless7898]

Thank you so much just bought it and installed on 2021 GMC sierra AT4 YOU R THE BEST LOVE IT.😀

[@seanprimeaux2131]

Keep up the good content’ channel is one of my favorites.

[@LonestarHawaiian]

I appreciate it! 🤙🏽🤙🏽

[@josephdavidson323]

Long live Jerry! I almost couldn't hit the like button but I did!

[@jjrox8930]

That's cool lonestar. But the original lifters ate still in there and can break at any moment. Then what?

[@2packs4sure]

In the thumbnail it said fixing GM's worst invention. that is a very very bold statement !!! I think GM has had MORE than a few that were worse than DFM.... lol

[@ag-om6nr]

Please be careful that any changes do not affect your warranty ! Maybe a good plan would be to sell or trade before the engine warranty runs out !

[@sagillis1]

Hey brother, long time sub. Love your videos. Had a question though. Can you run the pulsar LT on a 2021 Trail Boss Custom?

[@rangetechnology8178]

Thanks for the review on Pulsar LT! First off we love hearing from happy customers. Second, have you by chance ever hand calculated your mielage? In all our testing and development, we've found the computer displays aren't always accurate and didn't see quite the mileage change you've experienced. Mileage is very subjective and can vary greatly from one truck to the next, especially with so many variables.

[@LonestarHawaiian]

I appreciate the comment, been LOVING it so far. Yes you are correct, the digital mileage is directional and not exact. I’ve run about 1/2 tank so far with it installed. I’ll be providing an update in a week on actual mileage once I fill back up and do the actual calculation 👍🏽

[@jeremyroberts7719]

Will this override my Silverado 1500 trail boss’s 98mph governor?

[@HowtowithPaulHenderson]

I just ordered the pulsar LT. I've been keeping track of my fuel since day one I can tell you exactly how many gallons my Silverado has used since 2019. Here is some info on a 1989 Pontiac firebird that I had for 23 and a half years with 325,000 mi on it at the time I got rid of it back in 2012. That car consumed $30, 500.00 in gas I could add up the gallons but I have to go through all the logs. Now on My 2019 Chevy Silverado truck as of last fill-up it had consumed 1,469 gallons how fuel at a cost $5,212 and is currently averaging 16.7 miles a gallon.. not too bad for a V8 and I kind of have a lead foot.

[@jeremyroberts7719]

@@HowtowithPaulHenderson will it eliminate the 98mph governor? That’s all I want it for.

[@HowtowithPaulHenderson]

@@jeremyroberts7719 I'm not sure about that, I could have sworn I've driven faster than 98 mph in my truck.

[@ryanbonser361]

Would you have to remove the pulsar before taking your truck in for service so the dealer doesnt see it

[@hashtagjustadad5110]

Definitely interesting. I have a 2019 trailboss LT z71 and don’t really know if it has DFM. I know it does not have AFM as the little V4 is not present on my truck. I know this does not completely prevent the failure but i like the idea of it if it can help prevent it. I’ll be doing a little more research.

[@Voodoo_Actual]

I have a 2017 Silverado 5.3L, tuned it with a Bully Dog for 87 octane. Wanted to see what the fuel efficiency was with and without the AFM. For my truck, it was worse with AFM active. Highway I can get 21-23 mpg driving around 70-75 mph average, and with AFM active I get around 18-20.

[@D3RPZILLA]

That's a nice amount of oil from that catch can! Do you plan to add a can to the ZL1? I installed an Elite Engineering E2-X Ultra dual valve can in mine (front mounted) a few weeks ago and it's a little more involved than what it looked like when you installed that one on the Trail Boss... but, not to bad! :D Peace!

[@epeterson2448]

Great video. I haven’t bought on for my 2019 high country yet but I plan on doing so. My question is that I’ve had my truck ar the dealership a few time because when I got in to the gas it feels like it’s winding up or try to figure out how many cylinders to run. Did you have that problem?

[@chrismarbrey9678]

Yeah I tried that Max throttle sensitivity setting, and yeah I have to agree with you on that one . I went ahead and just dialed it back to 15% above stock feels pretty good with the lift I put on and the bigger rims and tires

[@zboone2288]

I have this truck and already trading it in because of these weird electronic systems. Although they say they don’t avoid warranty I went to multiple dealerships after an approved lift and they all say it’s voided although a dealership installed an approved lift. They relay you must take back to the dealership that installed it to receive a possible warranty

[@Brian.8272]

I'm looking at the new suburbans with the 5.3 ltr. I would definitely either do a muffler delete or Corsa sport muffler, your truck sounds great!

[@B_Thomp]

I just bought the cool air intake you have and the oil catch can. Do I need to wrap the cord like you did so I won’t hear any noise? Also got a flow master fx muffler I bought today. Need to install everything still. But is the pulser worth me buying??just bought a new 2021 Silverado LT 5.3

[@grizleeone1]

Dude, the look on your wife’s face in the intro when she guns it cracks me right the hell up. 😂😂😂

[@isachar2013]

Real lifter preventer is keep clean oil all the time , as soon as you hit 50% oil life , change oil and use Mobil 1 or royal purple . Engine will make it to 120k miles running smooth before a new engine.

[@robertthanepohn7559]

What do you think of running a quart or two of Lucas (or whatever equivalent RP sells) in these new engines? Been having GMC do all my maintenance by the book (and beyond) so far on my ‘20 Sierra instead of doing it myself just so I’ve a paper trail and no warranty issues, but I always ran Lucas in my older Silverados and Cavalier, haven’t introduced it to my new baby yet though.

[@isachar2013]

@@robertthanepohn7559 please don't do it! This new engines are very different , the new engine requires thin oil , lifters needs to move freely , if you add a different type of oil you will have a engine problems right away. This engine use thin oil and consumes a lot due DFM. that's why you need to keep clean oil all the time . Check level after a long trip

[@brendonlowe7577]

Love the mods you have done to the Trail Boss. What are the top 5 mods that you have done thus far?

[@Brian.8272]

I have a Cadillac escalade 2011, always serviced at the dealer, at 117k miles camshaft bearing came out of the block, it cost me 9 thousand dollars to get a crate motor from GM installed, at 170k miles they had to remove one of the heads for a lifter failure, i love the 6.2 motors, but I'm disappointed with the reliability

[@HowtowithPaulHenderson]

Good news lone Star. I finally installed the pulsar LT on a 2019 Silverado, my exhaust is semi stock I did replace muffler with the magnaflow. I will say this I can definitely feel a difference and I did set the throttle sensitivity to #2 I might try #3 tomorrow. Only thing is though they didn't send me the bracket so I have to call them up tomorrow and see if they can send me one.

[@ivnxxmartinez6151]

After taking off the DFM did it sound different with the MF ?

[@HowtowithPaulHenderson]

@@ivnxxmartinez6151 No doesn't sound any different, to hard to tell. Maybe if I had a camera mic at the tail pipe.

[@ivnxxmartinez6151]

@@HowtowithPaulHenderson I thought it would have since all cyls are working and don’t convert to lower. wow maybe it depends the exhaust setup, thanks though !

[@HowtowithPaulHenderson]

@@ivnxxmartinez6151 I do have an after market muffler, but it is behind the cab so I can't hear if there is a sound difference.

[@Oneo1mann]

Video starts at 5:20

[@johnaragon3314]

Wondering what brand oil catch can using? Also, have you had any problems with the Cold Air Intake in truck? Any check engine lights? Why do some people swear that you can only use the CAI from dealer? Thanks for the help. Great channel and truck!

[@adamz5379]

I've had the k&n blackhawk for a year and a half, no issues

[@hdjoe22]

Finally man!!!! Welcome to the pulsar family

[@justinralston2879]

Silly question but if you plan to take this in to the shop for any warranty work or maintenance are you just taking this out and re-installing? I ask because I am considering this instead of the AFM/DFM Disabler that goes into the OBD2 port in the cab and will be taking my 21' Sierra 1500 in to get the passenger side lifters replaced (driver side already replaced due to a bent lifter) in a couple of weeks. Appreciate your perspective.

[@TheHortonOfficial]

They say that it doesn’t void the warranty of the truck, so there shouldn’t be any reason to take it out and re-install it.

[@semiauto3148]

The disabler doesn’t work on the 10 speed trans with the 6.2l engine. Only the Pulsar will work. In case ya didnt know

[@robertthanepohn7559]

Been a year, how’d it work out for you? Only computer mod I’ve got so far is a speedometer calibrator for my 35s but even with just that I had one shitty dealer wrote up that my warranty was void (had me fuming!!) I bought my truck brand new and already modified from a huge dealer that sells new lifted trucks so I know I can always drive several hours to them if needed. Not sure how “chipping” the engine would affect the warranty though. I just recently crossed 36000mi on my 2020 but I did buy the extended warranty so I definitely want to know before I risk it.

[@bigbeef8935]

Have you had any annoying rattles on your passenger side? my 2021 6.2 trail boss has them I ended up taking off front two door panels . Had to wire tie cables and all sorts of little plastic Shit, rattles are gon for now

[@HowtowithPaulHenderson]

Okay I just ordered it. $481.00 not too bad. Came to $516.00 with sales tax, free shipping... I did buy it through the link in the description of your video.

[@ChrisDIYerOklahoma]

Same here...$512 for mine

[@HowtowithPaulHenderson]

@@ChrisDIYerOklahoma now I just have to see if I want to install it in my truck or wait until I get a new one. I might go ahead and install it anyway since it's so quick and easy.

[@brianhoyt2469]

Although I haven’t heard about this affecting the 2.7L as the 6.2L now I gotta see if this is available for the 2.7L Turbo Max because I HATE having to remember to turn off the stupid auto start/stop every time I turn on the truck

[@markmanning5683]

12-01-21 Just ordered the Pulsar LT today. My Truck is a Lease with intent on Purchase in 3 Months when Lease Expires. Then I saw all the DFM issues and changed my mind on purchase. Now that I have seen this item out and it has changed my mind back to purchase the truck. Thanks for your Video and recommendations. Loyal watcher of your Channel. 12-07-21 Just received my Pulsar LT, the package did NOT contain the Air Box bracket, call the where I purchased this, they knew nothing about a bracket and nothing on the web site, where did you obtain one?

[@adamz5379]

Mine came with the bracket. But honestly you could use some zip ties and be fine

[@seanhaywood1789]

I also noticed that you do not have the window vents at all. Is there a reason behind that or just personal preference?

[@shavaryeanderson9094]

We recently purchased a 2021 Silverado Lt Z71 and I was delighted to see on the build sheet that it DID NOT come with active fuel management 😊….probably because of the chip shortage 🤷🏾‍♂️

[@nathanbuck81]

Same here 2021 LT Trail Boss 5.3

[@shavaryeanderson9094]

@@nathanbuck81 I’m still worried about all the issues the 2021 GM vehicles are having such as bent push rods and failed lifters. Only time will tell I guess 🤷🏾‍♂️

[@hashtagjustadad5110]

It’s my understanding, and I could be wrong, that AFM was only up to 2018. 2019-2021 vehicles were equipped with DFM. Essentially same thing different name. That being said, the failure could occur with either. The only thing I’ve been able to find is that if the truck is equipped with the AFM then you would see a little V4 pop up in your screen. DFM has no such indicator.

[@robertthanepohn7559]

If that’s true then I guess there is a silver lining to the shortage that got a lot of folk out there with expensive trucks missing basic essential luxuries like working seat heaters and such. …got to have seat heaters, never want to go without ever again since my first Silverado with that in ‘14!

[@LUMP1713]

How ironic. My 2021 Silverado RST is at the dealer for most likely lifters. Only have 4200 miles on her too!

[@LuisMedina-zs2hm]

Bro you live in prosper?! I recognize the Walmart and that shopping center! I live here too 😂

[@petegutana3241]

Just bought a 2022 GMC Sierra 1500 5.3L. It doesn’t have auto start/stop currently due to chip shortage. Do you think the DFM is currently disabled as well?

[@IvanRamirez-fs3sf]

Great video. I can not afford a new truck I’m thinking to buy a 2018 Silverado 5.3 with 50K miles on it. How can I make sure that the engine still on? THANK YOU

[@jjmoto65]

Is this unit for the 5.3 liter only? I have a 2021 6.2 with 6" lift running 35's on 20" rims. Really worried about engine problems. Bought the truck new and have only put 4k miles so far.

[@taylormesser4049]

What I want to know is does it really not void factory warranty because That’s what I’m nervous about