This is a RU-vid channel dedicated to Automotive Technology including diesel engines available in the USA, towing, upgrades, cold starts and our experiences with them. I am just starting out and will be posting new videos to answer people questions or to report on thing that happen. Please feel free to let me know what you would like to see I will do my best.
The mileage will be the same on the TurboMax. I purchased a Colorado with the L3B an I'm getting an average of 20.6 over the last 13750 miles. Some towing it there, without that it would be over 22mpg. Thanks for asking and watching.
In 2020 they didn't offer the max trailering package on the LM2 trucks but I did add the Z71 so I had the 2-speed transfer case. The maximum tow rating on this truck was updated by GM to 9,300 lbs, GCWR 15,000 lbs. My 2023 LZ0 does have the max trailer package, wasn't really required but I wanted the new motor and since it was available I added that option. Thanks for checking and watching.
@@CJIEngineering Cool! I have the same set up. 2024 LT 1500 with max trailering and the LZ0. Was curious about how much of a difference the Max tow made and how the fuel economy is when pulling a 28' travel trailer.
@@devinsampare9483 The fuel economy is basically the same. I haven't done the same mpg loop yep but I'm thinking of doing another over in the next few weeks as follow up to this video. I have done a lot of towing to 65mph with the trailer and I'll get about 13.6mpg so that would be around 11.7 mpg @70mph. For sure the LZ0 uses a lot more DEF. You should plan on putting in about 2.5gal every 600miles when towing.
My 2021 just threw the first service engine light yesterday, It did not display anything on the dash. When I started it this morning, it was gone. i did notice last night my voltage was below 14v on the dash gauge.
Actually it does not. To be honest the frame on the Colorado seems to be stiffer than the 2500 Ram trucks I have towed this setup with in the last several years. It has almost the same payload as those trucks with the Cummins in them...
I have a couple of questions for you. 1. Do you know what code you received? 2. Have you had all of the over the air updates done on your truck? You have the LZ0 engine in your truck and during the break in period you might get emissions performance low codes. There is a break in period for the catalyst that does seem to fix itself but there was also supposed to be an update to make it happen less often/hopefully never. I would be more than happy to look into it if you have a few more details you can share.
Yay your back! I have the L3B HO in my 2022 Silverado and love it. The thermals you've got are quite good as well (coolant and transmission temps), nice and mostly stable only fluctuating a few degrees here and there. How's your empty MPG been so far? In my Silverado I'm roughly 17-19mpg per tank in the winter, 19-22mpg per tank in the summer with a current lifetime MPG in 20,200mi of 19mpg.
Great to hear about your 2022 Silverado. If I'm nice to it 70mph on the highway I'll get 23-24mpg. My normal commute is 43 miles each way, speed is higher at times and lower at times, try to stay with the traffic I get 21-22mpg. Overall I'm really happy with it. I use fully.com to log all the service and fuel economy numbers. If you search you should be able to find my trucks. I'm going to do empty loops to document it for everyone. Thanks for the question and for watching, I really appreciate it.
Lol... We'll truth be told I'm a sucker for diesels and I also love me an online 6 so when it came out, 2020, I just had to have one. That one was a short box. Then in 2023 when it got steel pistons, max tow package and a little bump on torque I bought the standard box version. Even with a stronger rear axle and high GVWR it actually has a little less payload :( I'm not a fan of the displacement on demand that is in the GM V8s so they were never really an option for me.. Thanks for watch and the question.
@CJIEngineering just more videos like this. I had a 2020 1500 5.3 that I loved and 2022 1500 2.7 and hated it so I traded it in for a 2024 1500 duramax and it's a game changer.
I have followed you since your first testing of your Silverado. I know you said you wouldn't gain any power/torque when using premium but at the same time as you eluded to, you wouldn't loose any or as much power/torque in those times where its pulling time on 87 either so it could be looked at as a gain. I have tuned my 6.2 Yukon (with the 8 speed) and I have also data logged the difference in timing being pulled when running 87, 91 and 93. The difference between 87 and 91 is pretty big but the difference between 91 and 93 isn't worth the price difference most of the time. I always run the 91 without ethanol. When I ran my 93 test it was with ethanol. That being said when towing I would personally always run 91 and probably 87 when not towing. Spark knock is pretty hard on an engine. Thanks for the video!!
Thank you for following the channel. I haven't put out much content lately but I'm hoping my process is more refined so I can do some videos more often. Also thanks for the extra detail on octane and knock. I'm curious where you get 91 w/o ethanol. Around me we have 89 rec fuel but it's about $1/gal more than 93. That would be a great test but I'm not sure it's available at enough places for me to do some long distance towing...
@@CJIEngineering I live in Iowa. 91 with no ethanol is cheaper than 93 with ethanol. Every once in a while I find I can only get premium with ethanol. It’s rare for me to come across a fuel station that doesn’t have 91 or higher premium. Any premium fuel is better than 87 when towing I have found.
Question question. I have the banks idash and my torque rating is all over the map. What is the PID or how can i find the torque rating and transmission gear? Thanks
If you have a modern GM vehicle you can use the "DMAX_LM2" vehicle settings. This one has all the data that I like to record, of course more data on the diesels but it worked great with the L3B. If you need more details let me know and I'll give you some more tips. Thanks for the question and for watching.
Really enjoyed the video. Would love to see more on this truck and on the Duramax too. I’m looking to purchase a truck within the next year and I’ve been going back and forth on a new Colorado or finding a used LM2/LZ0.
@zachbritton448 Thank you for watching. I have a few questions for you. How often do you tow? How much weight do you typically tow? How far do you normally drive every week? Those are all important questions when it comes to the LM2/LZ0. I did have a few issues with my LM2, the LZ0 has been rock solid over the first 20k miles.
@@CJIEngineering The main thing I am looking at is the fuel economy. I don’t tow very often and if I do, it’s less than 4K lbs. I do commute quite a bit for work which is mostly highway. And I’ve always been a “diesel enthusiast” if you will.
@@zachbritton448 With what you have told me the 3.0l Diesel would be a great choice, IMO. The only caution that I would have for you buying used is trying to find out if the proper oil was used inside the engine since it was new. These engines need the Dexos D oil, low visibility and low ash. This is important because ash can plug up the DPF filter and run over $2,000 to replace. These are a few issues with the LM2 engine, wire harness issues and excessive oil consumption. Both can be fixed, repair the harness and replace the valve cover and the #2 glow plug. The LZ0 has both of these fixed, 2023+ but they also made changes to the security in between the computers that makes it almost impossible to tune the LZ0. The LM2 does have some aftermarket modifications available. My LM2 had both issues, only one was fixed while I owned it. The LZ0 has been rock solid so far, just crossed the 20k mile mark. Let me know if you have any other questions and good luck.
I don't plan on doing any upgrades on the High Country. The LZ0 is a really great engine right from the factory. If you do upgrades there is a really good chance that the ECU will cause a fault. The 2023 and newer trucks use a more secure network between computers and there is a much higher chance of causing faults. Is there anything specific that you would like to see? I'm going to do a 0-60 towing my camper to compare with the other trucks and probably a MPG Loop also. I have posted the oil analysis comparing several of my vehicles, there is a link in the 2020 LM2 oil change video description. Thanks for watching and asking a question.
@garvdarb, I'm intrigued, can you explain a little more what you mean? I agree that using Liter/100km does give you a better way to see if a vehicle is more efficient, something like 12l/100km uses twice as much fuel as 6l/100km (19.6mpg to 39.2mpg) but the math is the same. I'll make sure I report both in future videos.
@@CJIEngineering We here in Canada used to use the Imperial Measure. A imperial gallon is 4.54 L. The USA adopted a form of the Imperial System but instead of a Imperial Gallon and way back in days of yore, the Americans use Imperial Beer Gallon which is 3.78 Liters. The identicle Vehicles in Canada vs the USA show different Imperial capacities. 20 gal US is 75.6 Liters 20 Gal. Imp is 90 Liters. They are only numbers but the rest of the world always get better fuel consumption than USA. It stems from Greed I believe . Hope that helps in the confusion Gerry
@@CJIEngineering I'm driving a 2019 2500 Duramax. Beaut of a truck. 112 km, barely broke in. I am thinking of down sizing to A 1500 3.0 liter.. what's your input on these trucks. I pull a 26ft Grand Design @ 5900 lbs. On good flat hwy I get Approx 17l/100 @ 100 km/he. Now get your calculater out! At 100 km/he on same hwydriving on cruise I'll gett approx 9.5-10 l/100 which equates to around 28-30 mpg
The tires that I had at that time were speed rated "L", 75mph max speed. I now have Goodyear Endurance trailer tires, speed rated "N", 87mph max speed.
There is an engine oil cooler in the truck, it tries to maintain a constant temperature and it should be around 235F, that way any moisture that would be in the oil gets boiled off. I would be concerned about the temperature if it were over 325F but I have never seen anything anywhere near that level. Thanks for the question and for watching.
I knew that this job wasn't difficult, but while I was at my local Chevrolet dealership getting some other warranty work done and I asked if they could switch out my fuel filter and how much. Their answer was yes,& the cost was $265.00. 😮 I told them to hold off.
I get the same issues exactly in my 1500 Duramax! I feel like I notice it more often when I spend a lot of time idling or just in park and not driving... And then if I go back to driving for a period of time it goes away.. but even still the error message persists for a few engine cycles. This is so weird and definitely concerning for me.
Hello there, could I use a fragment of your video for my coldstarting compilation? Of course I will put a link to your original video in the description, increasing the original’s popularity too. Thanks a lot for you answer in advance :)
Yes, I pulled a couple of enclosed trailers. A U-Haul 5x8 trailer and a 6' tall V-Nose 6'x12' Aluminum trailer. The U-Haul pulled really well, I would lock out 6th gear so it would go down the road in 5th at 70mph. Plenty of torque and all the temperatures stayed in check. With the bigger trailer the wind resistance is a lot higher and I would say it's the upper limit for this powertrain. No issues, it stays in 5th without a problem but you are putting in more throttle. Just my opinion I guess. Thanks for the question and let me know if you have any others. I do have some footage of a comparison tow that I did with the U-Haul but I wasn't sure if anyone was interested in seeing it :)
It will be interesting to hear your thoughts on the LZO. I’m considering going to that, waiting to see what happens with pricing. Seems generous motors is waiting too.
After seeing this it turned out to be almost exactly the same as my 2021 Chev 3 liter turbo 4x4 after a 154 mile run, but in Canada giving me 37.12 miles per Canadian (Imperial) gallon which is about 1.2 times bigger than a US gallon. Also set at 120 kph (75 mph) and staying in the center lane of 3 lanes and land elevation conditions were also pretty close to the same. From my perspective if this engine holds up, it will be a classic as the low to mid-range torque and fuel milage is phenomenal.
I typically fill up with Diesel at Meijer Gas Stations or at Truck Stops like Flying J, Loves, or Pilot. Places that sell a lot of fuel. I don't use any additives.
Hi Chad, last week the dealer replaced the nox sensor and re-set the engine light. I was good for about a week. Today, not only did the engine light return but I was unable to start the engine, wouldn't turn over. Full battery. The situation seems to be that the truck was parked on a very steep driveway incline (very steep). I wondered if the engine wasn't getting fuel because of the steep incline. I turned on the ignition, rolled the truck (in neutral) down to level ground and tried again, the egine started! Come to think of it, last week or two weeks ago when the engine light came on the first time, I was on a very steep incline too. Is this a thing? Do steep hills cause a fuel sensor malfunction or a fuel starvation problem? (fyi, both times had a full tank of fuel). Any wisdom would be welcome, thanks.....Ken
The diesel cap is a good idea. Where did you find it for the Silverado/Sierra? I can only find something that looks identical but the description says it's only for RAM. Seems it should work on the GM product but... Thank you
Thanks for the question. I purchased it on Amazon, title was "Magnetic Diesel Fuel Cap Accessory compatible with Dodge RAM TRUCK 1500 2500 3500 (2013-2018) with 6.7 CUMMINS EcoDiesel, New Easy Grip Design, current price looks like $18.00
@@CJIEngineering Thanks Chad. That's the one I found as well. I'll order it. Really enjoying my Sierra AT4 with the LZ0. 1,500 miles in and it seems like a goldilocks powertrain. Tons of grunt and 23-26 mpg hwy is incredible for a lifted truck.
Hi Chad. Great videos. I have a 2021 Duramax with 48000 miles. Engine light is on. I have an appt at the dealership tomorrow. My gmc iphone app says “Emission System” but no other details. Any wisdom from your experience would be appreciated. Additionally, I am interested in setting up the torque app so I can monitor more detail, any recommendations? Thanks…Ken
Ken, sorry to hear about your check engine light. I really can't say why it might be coming on, there are probably 1000 or more reasons why. I recommend OBDLink MX+ adapter or purchasing the Banks iDash. The iDash is about double the price but it works great. I bought the one that allows you to log the parameters to a micro SD card, and additional cost but I like to review the data... Purely a nice to have but not required. Let me know what you find out. Thanks
@@CJIEngineering Hi Chad thanks for the reply. The dealer replaced the nox sensor (no charge) and the engine light is gone, time will tell if it was the only culprit….I am going to investigate your suggestions, I am a maintenance nerd and not satisfied with the vague info that GM provides, thanks for the advice.
@@LakeJoe I have not used the App that comes with the MX+. I would recommend TORQUE Pro since I know you can add additional PIDs, I have a Google sheet with some that I have found that are very useful. I think the cost is less than $10. Let me know if you have any problems
There are a few ways. The easiest/free version is to put the truck into "L" and it will display the maximum gear. If you shift up and the RPMs don't change then you are in a gear just under the one being displayed. You can downshift and see if the RPMs go up then you know you were in the last gear. I use a Bluetooth adapter and Torque Pro app or a iDash gauge from Banks. Both display the gear that you are really in, even in drive.
My 2020 at 41,000 recently threw at Service Exhaust 175 miles warning 500 miles from home in St George Utah. I pulled into the dealer and they plugged it in and ended up re flashing the ECM. I continued onto Moab and it threw the code again (ambient temp 70 deg F) Started it again the following morning and CEL cleared until later in the day going into Denver. Took it to the dealer and they found a bad NoX sensor, a bad EGR valve and a faulty connector. In all I was stranded for five days waiting for the parts and labor. These sensors are very difficult to access at the back of the motor under the dash. All covered under warranty but I have the same concerns about it happening when I am not lucky enough to be close to a dealer. Great vids Chad
You say modern DPF DEF diesels air is cleaner leaving the engine then when coming in. I guess you would be ok parking in a small garage, close all doors and windows, get back in the truck, roll down the windows and take a nice long nap with your truck running. WE NEED CLEAN AIR to live heathy lives!
I can’t tell if the truck is pulling the trailer or the trailer is pulling the truck. Lol. Ain’t no way that thing would do me any good where I live in the Rockies 🏔️. I was actually thinking about buying one but I just don’t think it would suit my needs. I need something bigger.
I agree with you 100%. This setup is good for the flat lands or small rolling hills out east. I upgraded to a 1500 Duramax for my trip out west. It did great but like they always say, bigger is better.
The best test I have seen. Well done, very informative, the right mileage I love all the metrics. I have a 2018 f150 platinum with a 3.5 ecoboost I pull a 3008 windjammer rockwood... full loaded around 9000 pounds total 14400 total I get 8 miles per gallon towing Midwest and 7.2 in mountain at 60 miles per hr... but I will tell you my 3.5 ecoboost has no problem pulling mountain. I now have 75000 miles on track and of that 25000 miles tow.. so far the only thing I have done to the truck is 5000 pound airbags and leveling kit and brakes and tires. Thank you once again ever report tells me to up grade to an 1/3 ton but truthfully I don't need it for part time tow.. Just my opinion...
I have been towing the Cougar, the LZ0 with the max your package is really nice. I have done a "NEW" towing loop, lost a tire on that one last year, but I didn't publish it yet... Maybe in a few weeks now that I'm getting back into the groove. I also want to do the original 103 mike loop so I can do some comparison videos with the LM2 and the L3B Colorado :) I needed to wait till we get back our summer blend, since most camper towing is done with #2 fuel I want to make sure it's accurate. Thanks for watching.
Thanks for the question. I purchased it directly from the manufacturer. www.daubertchemical.com/store/product-list/corrosion-prevention/nox-rust-x-121b
