@@TxJacob713Used, not abused. Respect and care for what you own. This guy could buy a new truck tomorrow so he’s not as concerned about abusing this truck.
@@TxJacob713 trucks are meant to be used and worked not abused!! Treat your vehicle with care and it will take care of you. When you abuse it it will abuse you by leaving you stranded. I am a chevy guy and however i will say new trucks are trash which could be an issue with the truck as well but when you are romping on the engine everywhere you go and roasting the tires thats abuse he abuses his shit and then wants to know why it breaks.
They all have that DPF problem when theyre new, its the def tank heater/pump unit, once its fixed it wont have the problem again. It happened to our 2020 High Country too. Same thing with the mileage too, it got bad mileage until the emissions were fixed, now it pulls 20+ mpg unloaded on the highway. Also the exhaust brake doesnt activate unless you touch the brake pedal.
I have 2 of these trucks and you have to put your foot on the brake for the exhaust brake to work I love mine they pull like no other truck and the power is always there
And towing 7 thousand pounds over what it’s rated to, with like double the rated payload, I’m not saying soy should drive your ur trucks but if you push it it’s gonna break😂
Bruv, exhaust brake you gotta use the brake. The tailgate hitting the hitch, that should have been obvious from the start. As far as the check engine light, i bet if you disconnect the battery for 10-15 minutes, it might clear it up. With all these electronics in these new trucks, sometimes you gotta just unplug it and plug it back in. I've heard great things about the 6.6 with the allison. These emission systems are criminal.
I have an 18 lifted Denali Diesel. Was thinking about trading for a new one. Not now after watching some of these videos. My exhaust brake works good. I just touch the brake pedal enough to activate the brake lights and it seems to kick in.
I had a 1 ton Ford 2016 set up with 411 rears and pulled trailer with it aii the time. I either had a 26 ft enclosed by 102 wide 11 tall, or my 40 fr pr flat beb behind it and that thing was ananimal to drive, hauled heavy loads. In 118000 miles it was getting 9.5 mpg and I hauled in the hills , loved that truck.
That’s a chevy thing for the exhaust brake. It’s not very power vs the dodge or fords. But I’ve had my exhaust brake kick in and just about hit near the redline skootin down a hill with 20,000lbs. Leaf springs are flat already for a 1 ton.
It’s a syncer I had the same issue it’s said all the same things that your truck said just keep driving it it won’t do anything or try to find a syncer for it.
my 2021 3500 Denali was leaking transmission oil , Steering was pulling to the right and ac compressor broke twice at 22k a 50k. Fuel door fell off and now the parking assist is not functioning. Very disappointed with the truck
I have a 2013 and once it was deleted I got 100 miles Moe out of a tank of fuel. 250k miles the only thing replaced was the trans computer. I didn’t have the dpf stopped up once but once deleted it worked great!
Bad ECU my 23 had those performance codes when the ECU got hot also check if the wiering harness is connected right sometimes the dealer just pops the connector in when it gets off the delivery truck and it's not all the way locked and it disconnects some pins when it gets hot and expands
Seen a lot exhaust def injector sticking open causing low line pressure and burning up pumps way early. Take your scan tool and command the def pump on see if it build’s pressure. If you can hear the pump running pull your injector out and command on and see if it’s just spraying out. Seen to many injectors go bad last couple years. Usually won’t set a dtc you can read.
I have the same issue, the dealer has had my truck a month. The DPF filters have high % defective. That DPF restriction goes in 3 stages, first level of diff it’s just a light, 2nd is reduced accel, then limp. If you see a DPF light, immediately address it or you’ll end up on the side of the road. Not sure why it wasn’t going thru regen like it’s supposed or if that is the real issue.
I mean I’m on my 3 ford truck now we’ll older ones 86 F350 dually diesel and a stick in the floor it’s now where near fast and it had a swapped 7.3 in it vs the 6.9 but it runs and drives and goes down the road like a truck I just love it. For me every gm truck or Chevy i tried to get just never works out.
And your MPG, I would say go to Amsoil. I use it in my engine, transmission, transfer case, front rear differentials and I get 20 to even 26 MPG sometimes with out pulling. And you can’t look at MPG until you get around 35,000.
I have a fully deleted and built 2020 L5p - deleted it a month after and been running fine - Texas shop almost has the 2024 dialed in for a delete but turbo will be a pain to swap if ever ….
Never had any of these issues with any of my L5ps or even my 2024. While I was a diesel tech at gm for a bit I had a bunch of 21-22 L5ps sitting in the lot down for def heater issues and the fix was just programming that needed done, issue was most people couldn’t get the truck in the shop in time and the reductant heater fried itself. The exact same message popping up on your dash but was permanently stuck. I highly doubt it’s your def heater because that issue has been resolved but has happened before. As for fuel economy the best I’ve gotten on highway is with my 2024 Denali HD 3500 SRW I have about 2k miles and highway I’m around 18.7 and city around 10.5-12. The next best I’ve had was my 2022 and it was deleted getting 17-18. The exhaust brakes on these newer L5ps work really well once it sees a steeper grade or you tap the brakes a few times.
That’s it for mpgs…. I have a 21 2500 duramax and I get 20.5 to 22 mpgs on the highway and 16 around town normal driving. Not deleted but probably will be once warranty is gone.
My bosses 2022 Chevy 2500HD did the same thing with low mileage, his went into limp mode over the DEF fluid sensor going bad and thinking the DEF tank was empty. Try disconnecting the positive battery terminal and wait a few minutes and hook it back up apparently that resets the computer.
We all rag on eachother cuz you sit to pee cuz you own a GMC But at the end of the day, no matter what you drive, a new vehicle should not have ANY problems within 5 years. New vehicle quality control and engineering is absolutely pathetic
this isn't an new vehicle problem this is a government problem forcing BS emissions standards without giving you an way out of them. they are complete jokes.
Well I would understand if they didn't keep changing things. What has happened is he has one of the new batch trucks in which comes with the issues that has to be worked out before the better ones come out. Bruce, you never get the first batch man.
@@hilham89 no... all new diesel trucks have major issues at 2k regardless of what batch they are a part of. its because of the BS emmissions systems they are required to have, that not only burn more fuel.... also make it expensive to keep up.
@@TheObsesedAnimeFreaks I beg to differ on that. I'm running a Freightliner with the Detroit and had no emission problems yet and it just roller over 109k miles. Not all of them have issues they will eventually but not all at 2k. I have another one that has the Cummins and its reaching almost 300k and just now having issues with the Def system.
I have a 2021 L5P and no issues... Do yourself a favor and at least pick up a Banks iDash. You can see what gear you're in and know when you're about to go into Regen, etc... All super helpful information to know on these trucks. Doesnt void your warranty or anything like that, unless you get the derringer tuner, then you just unplug it when you go to the dealer. But yeah, these trucks are nice, but the more electronics that they keep putting in them, the more expensive they are and the more stuff that can go wrong.
Bruce i think you need to check wiring could be a short in the system it can cause shit to fail i had a problem not with that truck tho but it could a faulty wire causin the computer to short out
Used to be able to do dpf back exhaust tips and what not but not anymore they are to sensitive throws codes without that little restrictive cone on the “vented” stock tip..
The miles to the gallon is some the driver and some the truck if you step on it like if you have to be going 60 in 5seconds then it won’t get good mileage my 2019 chevy l5p gets good highway but around 14 with trailer mine runs to Sarasota on 2 1/2 tanks of diesel at 32 gallon tank and burn outs are always gonna cause issues you play you pay
My cousin had that happen to his truck and it was the turbo actuator (whatever the bell that is) and they didn’t have one anywhere and he’s out of a truck for 3 weeks so far. Same thing you’re seeing. Damn truck was going crazy ABS etc. exactly the same things you’re seeing with your truck.
I work for honda assembly. I know i know its wayyy different but if you would see all the wiring in these new cars omg. Its ridiculous. I sweat we're installing moduals for everything. And on the "high grade" theres double the modules its carzyy.
The exhaust brake works best with the cruise control activated. Pre select a speed going down hill and it will use both the grade braking and the exhaust brake to hold your selected speed. It does activate when the switch is turned on after you touch the brakes but I’ve found the cruise control method works best. Re: emissions problems Assuming you have not got a bad sensor (which is likely my 2021 has had multiple failed sensors), the emissions system on these trucks is a calculated % based on driving conditions. I could be burning down the highway loaded right up and it will almost run a passive regen when driving. I can go 12 hours and not see a regen cycle. Then let’s say I hit a city at 75%, the stop and go traffic will rapidly change the calculation and bump me up to 100% in less than an hour. Which is horrible because it can’t do a regen cycle while in stop and go traffic. It needs a sustained speed of about 45 miles an hour minimum for approximately 30-45 minutes to complete a regen cycle once it has begun. Soot levels will accumulate fast in the city and it will do one regen per tank on average in my experience. On the highway towing I can go a 1000 miles or more before it might regen. I use the bluedriver to monitor all this so I don’t interrupt a regen cycle if it can be avoided. The ONE option I want to see is the ability to manually regen while on the highway. That would make life so much better for me and the emissions system. If I was getting close to my destination and knew I was close to a regen I would love to be able to initiate a regen 45 minutes before I get to where I’m going so I can shut the thing off and not worry about the 1100 degrees exhaust burning down the grassy fields I might have to drive through.
I don't have powertrain/emissions system issues...yet on my 24 Denali ultimate, but my steering wheel leather and stitching has come apart and GMC denied the warranty claim 2 times truck has 650 miles. Hopefully, the warranty process isn't a pain for you on that it shouldn't be, but I didn't think it would be such a pain for a new truck on a steering wheel and it is so far lol. update 1800 miles has been sitting at the dealer for a month now with an oil cooler leak waiting on parts
GMC,Chevy trucks has major transmissions problems 1015-2020. Also the trailer break system has problems, my shows Gide and I have not used it yet. 62,000 miles and I had to pay 1/2 for a new transmission. 6 th and last Chevy for me.
Lot of sensor/emissions issues with the 2024 gm/chevy. Although i like the zr2 hd...i ordered the 2024 F350 Tremor high output powerstroke...imo ford makes the best heavy duty truck
I just bought a 2024 ram 3500 dually after watching a ton of vidoes on ford, gmc and ram. Keep scores on every ones thoughts and towing and when they where heavy the ram was the best. So i went the way of ram. I like the look of the GMC but you can not find a dually and if you order one its 5 to 6 months out they told me. The guys that were towing with the rams were over 36,000 pounds on there trailers could not find any videos of GMC towing that heavy. plus why do they only come with 3.43 gears only.
You are used to the sliding nozzle turbo used by Holset/Cummins. Most other light duty diesel engines use variable vein/geometry turbochargers. Sliding nozzle works much better for exhaust braking
Sticking with our 04 F-250 super duty. 220k miles, original head gaskets, no issues. Pulls our fifth wheel perfectly. Refuse to buy a new truck until these DPF issues get better. If ever.
Your truck should start getting better fuel mileage the more miles. You put on it when they're new and I've seen this on older DE remaxes. They have to get some miles on them before they start getting decent mileage.
Bruce, I have a LTZ Silverado with Duramax. I also been having a bunch of issues. I thought I was the only one. I had No start with continual cranking. I have my own scan tool so I got it started. It went into a limp mode recently with extremely hard shifting with metellic sounds. I took it to the dealer and tech said they have to Order a new ECU. I've had Led drl go out on each side very inconsistent. I have yet to get the step issue as I have power steps aswell. Overall I'm disappointed with the truck thus far. I'm at 1,800 miles completely unacceptable
Bruce I’ve worked on them and I’ve had issues seems to me like there’s a ground issue GM’s are noted for ground issues maybe that might help you get it resolved as always great videos God bless you and your family and good luck with your new home
Of course! Grounding issues. I've seen lost of weird shit happening with cars (with way less electronic stuff), because the bolt that is supposed to make the connection between chassis and the cable going to battery "-"side, was lose. So it's mechanical after all. Maybe if Bruce had given this bolt a few weeks to rust in place, it would not have vibrated lose???
Whole reason why I went with the 6.6 gasser as much as I love the Duramax the emission problems on all new diesels is a headache, plus they changed the ECM on the 24s so it’s even harder to delete now
How do u like the 6.6gas? Watching videos on it and some saying it’s pretty gutless. Was debating on going with the HD duramax but with all these emissions garbage I’m too worried.
@@Michael_Puddephatt yeah I’m not really going to toe anything myself. More of dump runs, bringing shit to the house, travel. I’m worried about the power aspect of it for highway speeds and it might not have enough juice for get up and go.
@@Michael_Puddephatt I’ll have to take a gasser and a duramax for a test drive see how both are side by side. I’m not too excited about the DEF and emissions bs for the duramax but would love the power and torque
I have a 2020 and last year at 29,000 miles the DEF sensor crap came on. Took it to the dealer and they were not 100% honest with me. They said they had to order a new DEF tank because it was a recall and that the tank heater wires burnt off . They tried to fix it temporarily but it didnt work. Then after a couple weeks I asked about it and they finally told me they didnt know when the Part was going to be in, it was back ordered. So my 80K truck sat in my driveway for two months without being able to use it ! I wasn’t happy
Jakes hold the exhaust valves open so compression doesn't thrust the vehicle forward the normal way, exhaust brake holds exhaust pressure to slow the engine speed just incase you were wondering happy learning when i learn something its a good day, ✌️
I typically tap the break twice as I pump break when pulling and you will feel it down shift. I have also seen it more aggressively down shift when you hit the break harder. Fyi
Do those new chevys have the aluminum drive shaft in them. I hated that chevy done that, I know a farmer that had the aluminum drive shaft in a newer chevy and he snapped 3 of them using his truck on his farm
Buddy has the identical same truck. Service engine light goes off and on every few days. Dealer says don’t know and just drive it doesn’t show code and won’t read it. Seems like they just sell trucks and don’t test them before hand. He’s had it for two months and had 14k miles.
Had a 19 Denali 3500 within the 1st 50k miles went through 6 injectors...local GMC dealer said they've had a ton of issues with injectors and harnesses on newer Duramax...get a Ford
I have a 02 gmc with a duramax...one if a kind ..58 thousand miles .brought new and if you seen the truck it would blow your mind ...in rain 5 times ..if u what one of the last of the good o boy trucks .. Going to sell only reason to get a class A motorhome..
Take it to the damn dealer, it's under warranty. Stop scanning it and get it fixed at the dealer. Lights on for a month, telling you take it to the dealer to get all that stuff fixed.
Wiring and computers common in a lot of new vehicles all of this points to modules losing communication something is really wrong and I hope they fix it for you
Heard the 24's are having some emissions system sensor issues. Gm Is supposed to release a ECM flash this week which should be available at the dealers next week.
Hey Bruce aren't you disconnect the battery? Wait 10 minutes and then hook it back and see if everythingerous you know. These cars are temperamental sometime
Beautiful truck yet I keep my old truck because of so many problems with these current 2024 GMCs. Once purchased, dealers don’t care if it works or not.
Man dogs the hell out of his truck and wonders why he has issues 😂
Yeah he's got that paper pouring out of his ears
It's a truck it's meant to be worked used and abused
@@TxJacob713Used, not abused. Respect and care for what you own. This guy could buy a new truck tomorrow so he’s not as concerned about abusing this truck.
@@TxJacob713 trucks are meant to be used and worked not abused!! Treat your vehicle with care and it will take care of you. When you abuse it it will abuse you by leaving you stranded. I am a chevy guy and however i will say new trucks are trash which could be an issue with the truck as well but when you are romping on the engine everywhere you go and roasting the tires thats abuse he abuses his shit and then wants to know why it breaks.
@@DWhite-el4ihits an emissions code
They all have that DPF problem when theyre new, its the def tank heater/pump unit, once its fixed it wont have the problem again. It happened to our 2020 High Country too. Same thing with the mileage too, it got bad mileage until the emissions were fixed, now it pulls 20+ mpg unloaded on the highway. Also the exhaust brake doesnt activate unless you touch the brake pedal.
Just a thought. Could have something to do with the fact that you went from the dealer lot. To baking the tires off.
Sounds electrical so I doubt that but also wouldn't rule it out. We have all seen something that doesn't make sense to be related on cars/trucks.
Mmmmmm well if i cant beat on a new truck prolly should leave it there
😂 nahhh that ain’t it you know he’s done nothing but baby that truck
It'll be fine
Bruce broke a new truck? I'm shocked!
😂😂😂😂
That's not the bruce I've watched for years.
Gay man’s Car
Treats every thing like shit and don't know why it's a piece of shit, I wouldn't own anything this guy set his ass in !
@@FINISHOperator88 you can't afford one!
Barely touch the brake to engage exhaust break. One of my favorite features while hauling
To engage the exhaust break, you have to put your foot on the break a little bit, and then it starts to work
can you manually downshift like the cummins?
Ooof
Brake*
@@owendodman3037 yeah you can choose gears
Not in my truck you don't
I have 2 of these trucks and you have to put your foot on the brake for the exhaust brake to work I love mine they pull like no other truck and the power is always there
I just got my second one…in love with them also.
Wow! The truck breaking after doing tons of Burnouts? Surprising!
And towing 7 thousand pounds over what it’s rated to, with like double the rated payload, I’m not saying soy should drive your ur trucks but if you push it it’s gonna break😂
Sounds like most of your issues would’ve been solved by a base model Bruce 😂
Pay extra for shit you don’t like apparently.
@@sam_kiefer1652fr
Bruv, exhaust brake you gotta use the brake. The tailgate hitting the hitch, that should have been obvious from the start. As far as the check engine light, i bet if you disconnect the battery for 10-15 minutes, it might clear it up. With all these electronics in these new trucks, sometimes you gotta just unplug it and plug it back in.
I've heard great things about the 6.6 with the allison. These emission systems are criminal.
The first person I've heard have an issue with the screen size! I hate how small the screen is in my 2021 Silverado! 😅
Could it have anything to do with you doing a burnout while hooked to a gooseneck?
Nope, one burnout wont destroy a truck lmao. Maybe a 6.4 powerstroke but not a modern truck
@@Kiljanderi well how many does it take?
@@alberteinstein3078 A lot more than a few burnouts lol
@@Kiljanderi explain how you know that?
@@alberteinstein3078 by using my brain
I have an 18 lifted Denali Diesel. Was thinking about trading for a new one. Not now after watching some of these videos. My exhaust brake works good. I just touch the brake pedal enough to activate the brake lights and it seems to kick in.
I had a 1 ton Ford 2016 set up with 411 rears and pulled trailer with it aii the time. I either had a 26 ft enclosed by 102 wide 11 tall, or my 40 fr pr flat beb behind it and that thing was ananimal to drive, hauled heavy loads. In 118000 miles it was getting 9.5 mpg and I hauled in the hills , loved that truck.
That’s a chevy thing for the exhaust brake. It’s not very power vs the dodge or fords. But I’ve had my exhaust brake kick in and just about hit near the redline skootin down a hill with 20,000lbs. Leaf springs are flat already for a 1 ton.
It’s a syncer I had the same issue it’s said all the same things that your truck said just keep driving it it won’t do anything or try to find a syncer for it.
I’m averaging 20-22 mpg in my stock 22 ram 2500 on 35s. Hauling 10k lbs at 15 mpg.
my 2021 3500 Denali was leaking transmission oil , Steering was pulling to the right and ac compressor broke twice at 22k a 50k. Fuel door fell off and now the parking assist is not functioning. Very disappointed with the truck
I have a 2013 and once it was deleted I got 100 miles Moe out of a tank of fuel. 250k miles the only thing replaced was the trans computer. I didn’t have the dpf stopped up once but once deleted it worked great!
No GM product can make it more than 60k miles without issues
Yes the emmissions systems are aboslute brain dead jokes. like... they are only designed to cost you money they don't actually prevent anything.
@@toddbob55 mmmm okay h8r
And this is why I bought a 2005 HD this year. Sick of all these new truck issues. At least I can easily repair my old junk myself.
nah, you're just broke
Yes broke. I live below my means. The modern-day definition of broke. Correct?
Bad ECU my 23 had those performance codes when the ECU got hot also check if the wiering harness is connected right sometimes the dealer just pops the connector in when it gets off the delivery truck and it's not all the way locked and it disconnects some pins when it gets hot and expands
Seen a lot exhaust def injector sticking open causing low line pressure and burning up pumps way early. Take your scan tool and command the def pump on see if it build’s pressure. If you can hear the pump running pull your injector out and command on and see if it’s just spraying out. Seen to many injectors go bad last couple years. Usually won’t set a dtc you can read.
I have the same issue, the dealer has had my truck a month. The DPF filters have high % defective. That DPF restriction goes in 3 stages, first level of diff it’s just a light, 2nd is reduced accel, then limp. If you see a DPF light, immediately address it or you’ll end up on the side of the road. Not sure why it wasn’t going thru regen like it’s supposed or if that is the real issue.
I have the same truck. Absolutely love it. Only issue is the trailering plug-in doesn't seem to want to work the majority of the time.
I mean I’m on my 3 ford truck now we’ll older ones 86 F350 dually diesel and a stick in the floor it’s now where near fast and it had a swapped 7.3 in it vs the 6.9 but it runs and drives and goes down the road like a truck I just love it. For me every gm truck or Chevy i tried to get just never works out.
And your MPG, I would say go to Amsoil. I use it in my engine, transmission, transfer case, front rear differentials and I get 20 to even 26 MPG sometimes with out pulling. And you can’t look at MPG until you get around 35,000.
Emissions are killing trucks
Yup
Wrong
I have a fully deleted and built 2020 L5p - deleted it a month after and been running fine - Texas shop almost has the 2024 dialed in for a delete but turbo will be a pain to swap if ever ….
Never had any of these issues with any of my L5ps or even my 2024. While I was a diesel tech at gm for a bit I had a bunch of 21-22 L5ps sitting in the lot down for def heater issues and the fix was just programming that needed done, issue was most people couldn’t get the truck in the shop in time and the reductant heater fried itself. The exact same message popping up on your dash but was permanently stuck. I highly doubt it’s your def heater because that issue has been resolved but has happened before. As for fuel economy the best I’ve gotten on highway is with my 2024 Denali HD 3500 SRW I have about 2k miles and highway I’m around 18.7 and city around 10.5-12. The next best I’ve had was my 2022 and it was deleted getting 17-18. The exhaust brakes on these newer L5ps work really well once it sees a steeper grade or you tap the brakes a few times.
That’s it for mpgs…. I have a 21 2500 duramax and I get 20.5 to 22 mpgs on the highway and 16 around town normal driving. Not deleted but probably will be once warranty is gone.
I have a 2024 2500 duramax and my exhaust brake works great. I tap my brakes once or twice to engage it.
The second code you said is the issue.
Regen or erase the muffler. Dpf filter clogged in 2k miles.
My bosses 2022 Chevy 2500HD did the same thing with low mileage, his went into limp mode over the DEF fluid sensor going bad and thinking the DEF tank was empty. Try disconnecting the positive battery terminal and wait a few minutes and hook it back up apparently that resets the computer.
Got a 2022 with 10k miles. Carry a load every day. Zero issues
We all rag on eachother cuz you sit to pee cuz you own a GMC
But at the end of the day, no matter what you drive, a new vehicle should not have ANY problems within 5 years. New vehicle quality control and engineering is absolutely pathetic
this isn't an new vehicle problem this is a government problem forcing BS emissions standards without giving you an way out of them. they are complete jokes.
Well I would understand if they didn't keep changing things. What has happened is he has one of the new batch trucks in which comes with the issues that has to be worked out before the better ones come out. Bruce, you never get the first batch man.
@@hilham89 no... all new diesel trucks have major issues at 2k regardless of what batch they are a part of. its because of the BS emmissions systems they are required to have, that not only burn more fuel.... also make it expensive to keep up.
@@TheObsesedAnimeFreaks I beg to differ on that. I'm running a Freightliner with the Detroit and had no emission problems yet and it just roller over 109k miles. Not all of them have issues they will eventually but not all at 2k. I have another one that has the Cummins and its reaching almost 300k and just now having issues with the Def system.
@@hilham89 having to throw def into the truck and burning more fuel then you should is by definition a problem.
I have a 2021 L5P and no issues... Do yourself a favor and at least pick up a Banks iDash. You can see what gear you're in and know when you're about to go into Regen, etc... All super helpful information to know on these trucks. Doesnt void your warranty or anything like that, unless you get the derringer tuner, then you just unplug it when you go to the dealer. But yeah, these trucks are nice, but the more electronics that they keep putting in them, the more expensive they are and the more stuff that can go wrong.
Test the mpg at the pump not the computer I have a 2023 Silverado and I’ve had zero issues. I flipping love it even though it’s the 6.2 L gas.
Bruce i think you need to check wiring could be a short in the system it can cause shit to fail i had a problem not with that truck tho but it could a faulty wire causin the computer to short out
Used to be able to do dpf back exhaust tips and what not but not anymore they are to sensitive throws codes without that little restrictive cone on the “vented” stock tip..
The miles to the gallon is some the driver and some the truck if you step on it like if you have to be going 60 in 5seconds then it won’t get good mileage my 2019 chevy l5p gets good highway but around 14 with trailer mine runs to Sarasota on 2 1/2 tanks of diesel at 32 gallon tank and burn outs are always gonna cause issues you play you pay
Your exhaust brake is activated by pushing the brake pedal. Once you step on the brake once it activates.
My cousin had that happen to his truck and it was the turbo actuator (whatever the bell that is) and they didn’t have one anywhere and he’s out of a truck for 3 weeks so far. Same thing you’re seeing. Damn truck was going crazy ABS etc. exactly the same things you’re seeing with your truck.
I work for honda assembly. I know i know its wayyy different but if you would see all the wiring in these new cars omg. Its ridiculous. I sweat we're installing moduals for everything. And on the "high grade" theres double the modules its carzyy.
The exhaust brake works best with the cruise control activated. Pre select a speed going down hill and it will use both the grade braking and the exhaust brake to hold your selected speed. It does activate when the switch is turned on after you touch the brakes but I’ve found the cruise control method works best.
Re: emissions problems
Assuming you have not got a bad sensor (which is likely my 2021 has had multiple failed sensors), the emissions system on these trucks is a calculated % based on driving conditions. I could be burning down the highway loaded right up and it will almost run a passive regen when driving. I can go 12 hours and not see a regen cycle. Then let’s say I hit a city at 75%, the stop and go traffic will rapidly change the calculation and bump me up to 100% in less than an hour. Which is horrible because it can’t do a regen cycle while in stop and go traffic. It needs a sustained speed of about 45 miles an hour minimum for approximately 30-45 minutes to complete a regen cycle once it has begun.
Soot levels will accumulate fast in the city and it will do one regen per tank on average in my experience. On the highway towing I can go a 1000 miles or more before it might regen.
I use the bluedriver to monitor all this so I don’t interrupt a regen cycle if it can be avoided.
The ONE option I want to see is the ability to manually regen while on the highway. That would make life so much better for me and the emissions system. If I was getting close to my destination and knew I was close to a regen I would love to be able to initiate a regen 45 minutes before I get to where I’m going so I can shut the thing off and not worry about the 1100 degrees exhaust burning down the grassy fields I might have to drive through.
I just got a base model gas Ford truck and optioned out of all the electronic crap that they come with standard
I don't have powertrain/emissions system issues...yet on my 24 Denali ultimate, but my steering wheel leather and stitching has come apart and GMC denied the warranty claim 2 times truck has 650 miles. Hopefully, the warranty process isn't a pain for you on that it shouldn't be, but I didn't think it would be such a pain for a new truck on a steering wheel and it is so far lol. update 1800 miles has been sitting at the dealer for a month now with an oil cooler leak waiting on parts
Engine brake works when you use the brake. Also the derate issue is the DPF system.
GMC,Chevy trucks has major transmissions problems 1015-2020. Also the trailer break system has problems, my shows Gide and I have not used it yet. 62,000 miles and I had to pay 1/2 for a new transmission. 6 th and last Chevy for me.
Lot of sensor/emissions issues with the 2024 gm/chevy. Although i like the zr2 hd...i ordered the 2024 F350 Tremor high output powerstroke...imo ford makes the best heavy duty truck
I just bought a 2024 ram 3500 dually after watching a ton of vidoes on ford, gmc and ram. Keep scores on every ones thoughts and towing and when they where heavy the ram was the best. So i went the way of ram. I like the look of the GMC but you can not find a dually and if you order one its 5 to 6 months out they told me. The guys that were towing with the rams were over 36,000 pounds on there trailers could not find any videos of GMC towing that heavy. plus why do they only come with 3.43 gears only.
You are used to the sliding nozzle turbo used by Holset/Cummins. Most other light duty diesel engines use variable vein/geometry turbochargers. Sliding nozzle works much better for exhaust braking
Sticking with our 04 F-250 super duty. 220k miles, original head gaskets, no issues. Pulls our fifth wheel perfectly. Refuse to buy a new truck until these DPF issues get better. If ever.
Your truck should start getting better fuel mileage the more miles. You put on it when they're new and I've seen this on older DE remaxes. They have to get some miles on them before they start getting decent mileage.
Exhaust brake doesn’t work like you tried. It works when the load is pushing you downhill above cruise setting.
Bruce, I have a LTZ Silverado with Duramax. I also been having a bunch of issues. I thought I was the only one. I had No start with continual cranking. I have my own scan tool so I got it started. It went into a limp mode recently with extremely hard shifting with metellic sounds. I took it to the dealer and tech said they have to Order a new ECU. I've had Led drl go out on each side very inconsistent. I have yet to get the step issue as I have power steps aswell. Overall I'm disappointed with the truck thus far. I'm at 1,800 miles completely unacceptable
exhaust brake is works on brake pressure but not sure about chevys, fords will work with no load and loaded down
DTC P244B check the pressure sensor under truck ,Hoses / Lines @ B345P Exhaust Pressure Differential Sensor - Particulate Filter - Blocked / Cracked / Disconnected / Kinked / Leaking / Missing / Restricted / Visible Damage
Bruce I’ve worked on them and I’ve had issues seems to me like there’s a ground issue GM’s are noted for ground issues maybe that might help you get it resolved as always great videos God bless you and your family and good luck with your new home
Of course!
Grounding issues. I've seen lost of weird shit happening with cars (with way less electronic stuff), because the bolt that is supposed to make the connection between chassis and the cable going to battery "-"side, was lose.
So it's mechanical after all.
Maybe if Bruce had given this bolt a few weeks to rust in place, it would not have vibrated lose???
Manually down shift with some rpm and you'll really feel that exhaust brake. Lightly hold brake pedal when you do it
Whole reason why I went with the 6.6 gasser as much as I love the Duramax the emission problems on all new diesels is a headache, plus they changed the ECM on the 24s so it’s even harder to delete now
How do u like the 6.6gas? Watching videos on it and some saying it’s pretty gutless. Was debating on going with the HD duramax but with all these emissions garbage I’m too worried.
@@nabatron21 I haven’t gotten to tow with it a lot yet but as my daily driver it’s been great I’m about to hit 5k miles
@@Michael_Puddephatt yeah I’m not really going to toe anything myself. More of dump runs, bringing shit to the house, travel. I’m worried about the power aspect of it for highway speeds and it might not have enough juice for get up and go.
@@nabatron21 oh it’s got plenty of power especially with how heavy it is I like it because it doesn’t have DFM
@@Michael_Puddephatt I’ll have to take a gasser and a duramax for a test drive see how both are side by side. I’m not too excited about the DEF and emissions bs for the duramax but would love the power and torque
I have a 2020 and last year at 29,000 miles the DEF sensor crap came on. Took it to the dealer and they were not 100% honest with me. They said they had to order a new DEF tank because it was a recall and that the tank heater wires burnt off . They tried to fix it temporarily but it didnt work. Then after a couple weeks I asked about it and they finally told me they didnt know when the Part was going to be in, it was back ordered. So my 80K truck sat in my driveway for two months without being able to use it ! I wasn’t happy
For the exhaust brake to work you have to apply pressure to the brake pedal
That's the reason of a Jake brake not to have to apply the brakes
@@erictulchin2317 jake brakes and exhaust brakes are different
Jakes hold the exhaust valves open so compression doesn't thrust the vehicle forward the normal way, exhaust brake holds exhaust pressure to slow the engine speed just incase you were wondering happy learning when i learn something its a good day, ✌️
I typically tap the break twice as I pump break when pulling and you will feel it down shift. I have also seen it more aggressively down shift when you hit the break harder. Fyi
The only way to get them to work decently is take all that emissions garbage off and delete it!
On my 2016 the exhaust brake doesn’t kick in till you apply some brake pressure
Are you in tow mode with exhaust brake engaged?
Your check engine light might be an oxygen sensor or maybe a bad connection on one of the wiring harness
I had a wiring harness problem and now I have a catyillac converter code lol
Whats the updated on the truck
I’ve had my eye on one of these… idk I think my 16 with the straight exhaust might be worth holding onto for a couple years
Is there an update of what happened?
Bruce, like the man said, disconnect the battery, or batteries for at least 10 minutes for a good restart.
I used to work at a gm and ford dealership and the gm trucks have been having issues Def system and and seen many motors replaced
Try giving the brake a light tap to get make the exh. brake work.
There's convoluted ways to use the exhaust brake and you have to go into the settings there's different levels to the exhaust brake
Deleted and TUNED trucks tow way better then stock tune tune the veins in the turbo for the exhaust break to slow it down better
Do those new chevys have the aluminum drive shaft in them. I hated that chevy done that, I know a farmer that had the aluminum drive shaft in a newer chevy and he snapped 3 of them using his truck on his farm
You are rough on stuff buddy 💀
Buddy has the identical same truck. Service engine light goes off and on every few days. Dealer says don’t know and just drive it doesn’t show code and won’t read it. Seems like they just sell trucks and don’t test them before hand. He’s had it for two months and had 14k miles.
Had a 19 Denali 3500 within the 1st 50k miles went through 6 injectors...local GMC dealer said they've had a ton of issues with injectors and harnesses on newer Duramax...get a Ford
I have a 02 gmc with a duramax...one if a kind ..58 thousand miles .brought new and if you seen the truck it would blow your mind ...in rain 5 times ..if u what one of the last of the good o boy trucks ..
Going to sell only reason to get a class A motorhome..
The reason why it hits the hitch, your not supposed to leave a receiver in when not towing
I have a 2021 and it works perfect.
Maybe you should take the fork truck to it and check under the hood lol
flies up the gears with a trailer on the back then a jeep goes past you lol hahahaha
Check the main chassis grounds might be loose or not making contact
This guy could destroy a cannon ball.
Any plans on adding any banks products ?
The older the vehicle, the less electronics the better
Yes. My Ram 2500 V10 has never let me down. 124k miles and still going strong.
These new vehicles are just overpriced POS. If I have $90,000 to spend it wouldn't be on these new ones.
@@davida.p.9911It is the DPF system and emissions.
@@calebniederhofer6529 That's why I like older diesels. DPF just adds cost.
My 05 durango with the Magnum has only ever gotten a dead battery, And the ac system not working.
Break in the engine yet?
Bad Ground Wire somewhere?
Got a 18 Ford F250 6.7. 385k and haven't seen a check engine light
💭 u lightened it up?
What lift kit did you get?
Take it to the damn dealer, it's under warranty. Stop scanning it and get it fixed at the dealer. Lights on for a month, telling you take it to the dealer to get all that stuff fixed.
Wiring and computers common in a lot of new vehicles all of this points to modules losing communication something is really wrong and I hope they fix it for you
With engine light on tow haul won’t work also auto start won’t work that’s the fun with these trucks good luck
Heard the 24's are having some emissions system sensor issues. Gm Is supposed to release a ECM flash this week which should be available at the dealers next week.
Then u have so many nodes in each module then u can see what modules are on or off
exhaust brake work with cruise control
Do you floor it everywhere?? I’ve been getting 24-28mpgs with mine consistently
I wanna see that 28 mpg and no that doesn't mean reset it and let it coast down hill, really put a pencil in normal driving conditions
Did same thing same day i got my new Denali ultimate.
Hey Bruce aren't you disconnect the battery? Wait 10 minutes and then hook it back and see if everythingerous you know. These cars are temperamental sometime
Can we get a update on the fast fuel filter set up..
Beautiful truck yet I keep my old truck because of so many problems with these current 2024 GMCs. Once purchased, dealers don’t care if it works or not.