I have never commented on a KZfaq video, but this video is exceptional. I am very impressed with the knowledge of the presenter. Well done!

Great information to know on my truck

Very informative and this guy sounds very knowledgeable. Keep up with the videos!

I wish u made videos everyday i’d watch them all, thanks keep em coming!!

Very nice and professional explanation!!!

I bought this exact truck before I saw this cab off repair video. Truck now has 450,000 kms on it towing almost full time. Couple injector pigtails and fuel lift pump issues but nothing too pricey so far

awesome info love your videos

Nice video!!

OUTSTANDING INFO!!

Very informative sir. Thank you 👍🏻

Great video.

The l5p are one of the best engines built!. Bought my 2019 with 2 miles and now I’m at 187k miles and no problems and still running good on 35s!. Best advice is to keep up with your maintenance and to fully delete the damn truck. The def is bullshit and only hurts the truck, that’s why I removed it because it gets way better mpgs and runs stronger, sounds a whole lot better too!. Any truck is trash if you don’t change the filters and don’t keep up with maintenance. Simple as that!.

Great video! You are not that far from Rich at DeBoss Garage. Nice to see more good content from fellow Canadians.

Great video! I just purchased a 2019 L5P so exciting, it will be a road queen but so what love diesels. Thanks so much for the info!!!

I have a friend that started to have dpf issues with his 2017 L5P i have a 2020L5P he only weekend drives his and has i belive 50000 miles, mine has 31000miles no issues, when he started to have dof issues the display on the dash told him he had a certain amount of miles to get to the shop something like that. I told him bring it by my house and hook on to my gooseneck dump trailer go out to the rock quarry and bring me two loads of rocks, now grated he was restricted at 60-65mph if i remember right, and from the quarry up to my house is mostly all hills with large grades needless to say after the second load halfway to my house the code for dpf cleared. This comes to my conclusion that theses trucks cant be babied they have to actually be worked and not road princessed out.

Gale Banks was Heavily involved in the development of the LP5 Build along with a Racing background Engineer, I can’t remember the name but Mr. Banks tells it that it’s the best out there right now. Now that being said, I have Owned every Version of GM Diesel Engines since the 6.2 Conversion to the 21 LP5 and I honestly believe this one has the most power along with fuel mileage. I get 24 out of my 21 crew also the 19 not as good but still good, my 14 gets about 21 but is a 3500 HD Crew I use to Haul Equipment around Michigan. Another thing is Bob Cross God Rest His Soul was the Engineer at GM who actually was on the 502 Crate Design also He Himself Created the Heads That NASCAR Required Use. That being said he told me that in Milford GM Proving Grounds they put every after Market System on the Duramax and Could Not Blow one Up at all. You name the Company and GM Tried their Product on the Duramax to try to Blow one up. The only issue ever that I know was Injectors in 2003 and the Turd Fuel Pump the CP4 which is on my 14 which needs converted over but Diesel Pros who does all our Company Repair Shop Burned to the Ground. Luckily for Us and Matt the Owner had good Insurance so they broke ground across the road the very next day so he could get his Customers work completed. He lost Millions of Property along with Nine Bays that all had Trucks in them, lost several in the parking area from intense Heat. A short story long is as soon as he is able the conversion will get done alone with new Head Gaskets or maybe even a New Crate 6.6 who knows.

Might you share your experience regarding regeneration (DPF cleaning) process of a nineth injector vs. injecting into cylinder on exhaust stroke? I've heard cylinder injection results in oil dilution and cylinder washing....therefore a horrible solution.

I see you driving the 6.7 powerstroke I also crossed over to the dark side

I still have an lbz. My friends bought new 2017 and 2018 Denalis. They are very comfortable and powerful.......when they are on the road. Their trucks have been in the shop repeatedly, sometimes for months! They are now out of warranty and continue to be problematic. The vast majority of failures are dpf related. The costs have been incredible, exceeding $20k for out of warranty repairs. Both friends are considering ordering new 2022 models due their belief that previous problems have been addressed.

The 6.6 Motor was being built in Ohio but the Heads are Cast by Isuzu. Then get delivered to GM Plant in Ohio then put together here then shipped to the Truck Plant in Flint where they are put into the trucks. The very best Is the LP5 to date. But the have never had a bad motor, fuel pumps were junk for a while.

Would you say in your honest opinion that the L5P is a solid platform?

Does adding a larger turbo horn or larger intercooler piping help or hurt the L5P engine or just waste of money? There are never any comments out there as to bolt on mods improving the L5P engine efficiency or performance.

Would your recommend ppe exhaust kit and down pipe. It help lower egt?

I m doing my Injectors on my 2017 l5p I'm looking at the Autel 808BT 608ts scan tool! Any Recommendations?Thanks!

Have you heard the thump, knocking that the l5p does, do you know what it is, chevy says this is a normal sound?

Will you do the LM2 Duramax?

Can you do a crankshaft sensor without removing the starter?

I have a 2019 3500 L5P, how do you keep that from happening?.

Great Video, super informative! Any info on a new(less than 200 miles) 2022 6.6 duramax warm engine knock? Dealer states it is normal, all do this because of the new bell housing. It is a super loud thump sounds like a washing machine thump and loud in the cab and in wheel wells/under truck. Mainly at idle. I find it hard to believe this is a normal sound. Any info is appreciated Thanks!

New subscriber here!!

Can you make a video about maintaining an L5P?

9 min and 5 seconds priceless! 666th like wow?! Hey 2018 L5P less than 100k miles trans is shifti.g really hard 3rd to 4th could you point me in he right direction? Please!

Any advice is much appreciated thanks

Did you have to replace the DPF? If so did you use OEM or Aftermarket?

So, after listening to your summation of the exhaust manifold issue and the resultant damage, I’d suggest that it would be fair to suggest that the fault is partially a result of the customer driving too far with a leaking exhaust manifold? I have to believe that any manifold suffering that kind of damage (1/4” right?) made noise... My take away from this is that if it sounds wrong it is... take it in and get it fixed! They might have saved themselves a lot of money if they acted promptly. Am I wrong?

Happy new year love your videos. I have a 2019 duramax 6.6 in last year have replaced 5 injectors first 3 twice in 3 months then number 5 twice first injector went then the harness to number 5 . 4 months later now I just replaced number 7. I pull trailers as well I put on 25 to 30 thousand km a month oil and filters done every month at gm dealership here in canada where I'm from. I've also replaced fuel pump as metal shavings started in first 8 months of buying truck. GM doesn't want to solve problem they just replace injectors and hand me the bill I ask why is this continuing all they say is I DON'T KNOW???

Yes Sir , i would like to know the cost for that repair. Thanks

I have a 2017 L5p. I have had the injector connector on injector 6 and 4 replaced. I had my mechanic replace all injector connectors on that side. Well it happened again where I had a code for injector 4 happened again. This is getting very frustrating. He is looking at the wiring from the ECM to the connector now. Any insight?

Do you have any advice on replacing the desno fuel pump?

I have a feeling this is what's going on with my 19 L5P. I smell exhaust when I come to a stop. Def injector started to push too much out and started leaking and corroded exhaust pipe. Dealerships fixed it @ 120k but I'm getting a rattling under driver side when under load or accelerating with a load behind me

How many hours to get the cab off of the frame.....and to put it all back together??

Just saw a post from gm authorities saying that gm is gonna buy costumer truck with Lp5. Is that true???

This was filmed on a Panasonic camera wasn’t it? I know that focus flutter …. Great video though.

Having problems with my acurator valve

What a nightmare

Would an audible turbo whistle be present when this occurs?

Does 2021 GMC 3500 Come with an Lp5?

Any ideas on the 2020 L5P thumping noise at idle?

is it safe to say that L5P is the most reliable engine. Injectors cheap and HP is cheap comparing to Bosch.

The L5P is all GM

How much time taking cab off?

Y'all do warranty work?

What did that repair cost?

I got an L5P, exhaust system will be “replaced” soon 😝😝

200,000 miles or KM?

You would be the guy to go to.

This guy looks like Ryan Reynolds

Best way to avoid L5P issues is to not buy one right now.....Chevy has done some weird stuff which he explains perfectly, but that exhaust right over the heads,...ouch.

It is not an Isuzu engine. The L5P is a GM in house designed engine. It’s a similar design to the old style duramax’s but it is not an Isuzu engine.

9 injectors 😜 hci

You need to do more research on the Duramax. It is not an Isuzu motor. The L5P has had hardware changes.. please educate yourself better on engines. It would be like me calling the powerstroke in New fords an international designed motor.

It's been a whale