What Is The Worst Year Duramax Ever Made? EXPLAINED!

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Mods done to the Truck!
EFI Live DSP5 Switch
HSP Air Intake Kit
68mm Street Turbo Ryan’s Diesel Service
60% Injectors Bitterroot Diesel
HSP Diesel YBridge
HSP Hot Side intercooler pipe
FASS Titanium 150GPH Lift Pump
FASS Fuel Sump Kit
MBRP 3inch Turbo Down pipe
PPE Race fuel valve
Ported fuel fitting
Transgo Jr Shift Kit
Kodiak Truck Transfer Case
Kodiak Truck AAM GOV Lock11.5 Rear end
PVC Reroute
PPE Stage 5 Built Transmission
Zone off-road upper control arms
PPE Stage 3 HD Tie Rods
6" Pro-comp suspension lift kit
5100 Bilstien Shocks
35/12.50/R22 DX12 Delinte
22x14 Instigators A776 Anthem Wheels
Trail Ready Front Bumper

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#duramax #powerstroke #cummins

[TruckMaster]

What are your thoughts??? I know this video is going to make a lot of people mad I’M SORRY! Nothing but love everyone

[onlyychevys]

I've had my LLY for 8 years and its been the best most dependable truck I have ever owned! 258k and I've only had to replace a leaking water pump.

[genebrown]

I bought a new LBZ in May of 2006. 260, 000 miles later it’s still going strong. Always has been bone stock. I use Lucus oil and fuel treatments. Engine belt pulleys, 4 giowplugs and new o-rings in the fuel filter base is the only repairs ever made on the engine. Best truck I could ever own.

[ajarjil]

I’ve got a 2005 LLY and it’s been FANTASTIC! I’ve got 479, 000 and it’s still going strong. Last year I replaced all the seals front to back, the front end and put in a larger transmission cooler and new radiator. People said I was crazy for dumping that much money into it, but it’s been a great truck for 17 years and I knew I then and know now I have many years of use left. I religiously change the oil when needed. I was very surprised to hear that my year truck fell into your “problem child” category. Love the channel and learning new stuff all the time. Keep it up!

[Wheaty]

The LB7 is a diehard beast. My 01 has about 270k on it right now. After upgrading to the stock SAC style injectors no more problems so far. They are supposed to help fix the injector issues. That pickup just does what I ask it to do no matter how hard or easy it might be. Its never left me walking. Thinking about updating to an LMM this winter but who knows the LB7 still purrs.

[PWarmuskerken]

I ran my LLY with no major issues for 290k miles with a Diablosport tune 95% of that time. I ran the original injectors the whole time until Feb last year. It was a solid, reliable truck. When the engine needed more than "just" injectors, I had a built LLY engine and built Allison (6-sp conversion too) installed to solve all the issues you mentioned here.

[craigrawlette]

I have a all stock 02 LB7. I did have to change the injectors at 170, 000 miles. But other than that, I've done nothing other than preventive maintenance. New belts, radiator flush, transmission flush with new filters, and rear. I now have 220, 000 miles. And I can honestly say that I will never get rid of this truck.

[cmcd]

I've had my lb7 for two years now, was a one old man owner truck from Canada. First thing I did was subscribe to your channel and add a lift pump. Had wanted a Duramax for years and it was finally in my price range. Thanks for all the great content.

[ashtons_always_fishing]

I have had my LLY FOR 2 years and put 70k on it with zero issues now she’s got 317k still runs like a top 🙌🏼

[NorCalFarmboy]

True LLY’s the emissions restricted and the cooling stack was smaller. However trans cooler and do the very basic deletes and intakes like we do on all of them and the LLY decimates all over. Each one will have their issues. My old 04.5 LLY was solid and never had an issue the whole time I owned it.

[brandonnice]

I bought my first diesel about 2 years ago. LML. 2015 Denali. I bought that truck because of your videos. I have spoke with Ryans diesel performance because of your videos. Would love to upgrade the turbo to a 64MM because of how highly you speak of them, it just isn't in the budget yet. I did all the upgrades you had recommended. Did the full deluxe Y bridge from HSP, (orange for GM) fleece cp3k conversion, lift pump (air-dog 2 165 gph) pcv reroute, up and downpipes. Got a 4" exhaust because that's all i could get and what i think is a decent efilive tune, minimal smoke. I use the CTS3 monitor because of all your recommendations and honesty and being a military man. Currently want to pull the trigger on the kryptonite deluxe front end and ball joints because of you. I watch all your videos (every one), i respect you as a fellow american, a soldier, an honest mechanic and we have never met, but i trust you more then most human beings on this round twisting rock. Appreciate all you do, have sacrificed and all your wisdom and knowledge. Thanks for inspiring me on diesels and educating me. Just wish i had a little more money to get my truck exactly where i want it. 64mm RDP turbo, kryptonite front end and ball joints and HSP torsion bars and my truck will be everything i have ever wanted and you are the reason why. Those companies should endorse you for marketing. Thanks Truckmaster, and best wishes to you and your family.

[JonahHorner]

My dad has a 2011 lml, it’s over 300k miles with the stock cp4 pump

[chrislong]

I agree with you completely on the LML. I do own one, and I know it's on borrowed time. I also think that even with the amount of labor involved, CP3 conversion, Y bridge and LB7 up pipes, S&B intake, delete and EFI live. I think you can get a good dependable camper puller and solid daily driver. My biggest killer is the salt in Michigan eating my body

[Scottie_B]

I have a 2016 LML. Had an injector issues. Guy told me I had a cp4 failure and quoted me 20k to fix it. Got a second opinion on a hole and a prayer a few months later and turns out the guy lied. Went ahead and put on a cp3 anyway. Did the injectors. Got the truck back and had issues for the last couple months. The same injector went bad. Pulled it out and had it tested…passed. But noticed a wiring issue. Fixed that. Mail problem still present. Loosing fuel rail pressure under load. Gave up and tore the truck apart myself and found the pump hoses ran poorly and pinched. Re ran them and bam. I’m good to go. Lesson learned. Don’t Rely on just anyone to do your work.

[ScottClevelandmi]

I got 186, 000 miles on my LML. I asked the dealer about it fuel pump issue. They told me to keep it above a quarter tank of fuel and by quality fuel… So far so good I think I’ll check in with a local diesel shop for an aftermarket preventative repair.

[koltenpetersen]

That's why I love my LLY so much. Its hated so much for being a duramax. Yet just the mouthpiece will save you. When I bought it and bought it home it over heated but with the HSP mouthpiece saved that and now I haven't seen the temp over 200 on a hard pull. My LLY has been a very solid truck and very reliable with 263k on the clock.

[Thelostboy]

LML owner here, Head Gasket failure is a big one on these as well, just done mine last week with head studs, still have the stock cp4 282, 000 on the clock, nervous as hell though lol

[Alex-iyfo]

I have an LLY because the LBZs were way too expensive in the beginning of 2020 when I bought it. It is my first Duramax and I had watched a lot of your videos before buying it, so I knew what to expect. I put the big HSP bundle kit on it and it runs great. Had 195, 000 when I bought it and it's coming up on 230, 000 now. I tow a 7, 000lb trailer all day every day for work. I never see the transmission fluid temp higher than 165

[ZackSway.]

I recently bought a 2016 lml as my first diesel 😂 I did a ton of research and did the cp3 conversion 2 months later. In those 2 months I had to replace the dpf so I just finished the new exhaust system. 4inch straight pipe thanks to your vids 🙏🏻

[dangermouse]

Good discussion, getting the issues out in the open and learning fixes and what to look for is important. So many turn key and go, not ever knowing what really is happening with there truck. Thanks for posting it Josh