L5P Duramax “Service Emissions System” Solution
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- čas přidán 10. 09. 2024
- My 2024 GMC Sierra AT4HD with only 8,000 miles on it, had a check engine light pop-up along with a message on the dashboard that read “service emissions system. 175 miles until 65 mph limit.” I have been reading about the  manifold absolute pressure (MAP) sensor on these trucks clogging up with soot and causing issues. This is a very simple thing to check. It’s right on top of the engine near the firewall and is held down by a 10mm bolt. Pull it out, spray it off with cleaner and pop it back in. This immediately fixed my issue. The light and notification went away. 
Thanks. I couldn’t figure out what was going on with my truck. Your solution fixed it and probably saved me from getting rammed at the dealership.
@@ih8horns glad it helped you as well!
Thanks so much for your post! I've taken my 2020 Silverado HD Duramax to the shop twice with the "Service Emission System" message and the 175 mile warning. They updated the software per a technical bulletin - twice - with the light only going out for a day or two. After spending days - and Uber $$ - going back & forth to the dealer, I saw your post after the 3rd time in just a few weeks that the warning messages and check engine light appeared on my dash. I followed your recommended procedure today and it worked like a charm! I had to use a small, stiff-bristled paint brush (couldn't find an old toothbrush) to get the gunk off the MAF sensor as the CRC MAF cleaner couldn't blast through the crud after the 68K miles my truck had on it. The light did not go out immediately and I figured I might have to drive it, shut it down for a few minutes and start it again to allow the computer to register new readings. Sure enough - second time I started it up, the check engine light turned off. Thanks again! (I e-mailed your CZcams link to the Chevy dealer and asked my service advisor to pass it on to their diesel engine mechanics 🙂 )
@@user-qz8ii9zm9g that’s awesome news! So glad it worked for you too.
Just wanted to say thanks for your video I was traveling when my did it and I’m like you don’t have time lol , you saved me from driving 65 mph 5 hours 😔would of took 7 thanks and GOD bless 🙏
@@michaelplocica glad this helped you out and saved you some time!
Took a few minutes for the message and light to go off, but worked exactly like you said! Thank you so much!
@@hayleynewsom3540 glad this helped you out!
Life saver! I was 9hrs away from home! Light came on and stumbled across your video!! That was the problem! Cleaned and on the road again! 17K miles unreal!!
@@crswiker1 that’s great news! Glad it helped you out. Even if it’s temporary, it will still get you back going.
Oil field worker here. 2024 Chevrolet is my office in South Texas. Lots of idle time in the truck. Currantly have 12,200 miles with 915 hrs. Because of truck lease agreement, our in-house mechanic is not allowed to work on new trucks. Trucks must be taken to a dealer for service. It takes weeks to get trucks back from dealerships. You are the man! Just saved me from having to bump down to an old raggedy truck that has been abused for years. Also, probably save my company tons of truck down time. If I signed the front of the checks, I would send you one.
Thanks for the great feedback! Glad it helped you as well 👍
Great advice I am a 8k now….thanks…..map sensor cleaner on hand!!!
@@jponyboyace it’s still crazy to me how dirty they get with so few miles
My man! Couldn't be more appreciative!It was caked up. Gently tapped it out with the ratchet, sprayed with wd40, wiped with qtip, problem solved.
Really glad this helped you too. Our wonderful EPA helping us out with longevity on these engines 🙄
I have a 2019 L5P and I do the same as you. Regular cleaning intervals. Thanks dude!!🤙
@@dannyshannon9103 as long as its emissions-intact, sounds like an unfortunate reality. I just make it part of my regular maintenance
awesome video. helped me fix my 2016 duramax ! thanks man
@@logashy8811 glad this helped you out
Thanks for the info it fixed my2018 gmc 2500 duramax
@@thomasmartinjr3945 glad this helped you out!
100% on target. Your instructions perfect 👌. I had 14k miles. Thanks for the video
I'm really glad this was able to help someone else and hopefully avoid the headache of a visit to the stealership.
I can say 2 weeks later the lights came on again and the turbo had to be replaced. $5000.00 under warranty, though.
@@robertwhichard316 wow, I’m about 10k miles later and no issues. That sucks they had to replace the turbo.
I'm gonna check this on my truck. I had the same thing happen at about 7,500 miles. Dealership replaced the DPF. 15,000 miles later, I started having an engine code having to do with back pressure, and the dealership said it was "calibrating." Took it back in at 33,000 miles with the same problem, and the dealership said the DPF needs replaced again. I run only Exxon fuel because I can't get TopTier and I use Hotshot Secrets EDT.
@@chrisphillips9388 hopefully yours will be something simple like this.
@@FixIt_Mann Well, it didn't work, although the MAP sensor did need to be cleaned.
However, reading articles & watching videos, I've learned that running below 1400 rpm for extended periods of time may be causing DPF problems. I travel to work 45-60 minutes on the interstate if I don't have to stop somewhere. Then, I spend the day traveling secondary roads, lease roads, and right-of-ways, which puts me running below 1400 rpms. Only going above 1400 under acceleration mostly. The dealership is going to replace the DPF. I'm very skeptical of claims made by companies about their additives, but while waiting on parts, I used two bottles of Rislone DPF Cleaner in a half tank of fuel which makes it the same ratio as the directions and have been diligent about keeping the rpm's up on the side roads. The engine light went off and hasn't come back on. I don't know if it's the fuel additive, keeping the rpm's up, or the combination of both, but it seemed to work. I'm still having the DPF replaced under warranty. I've fought this for 28,000 miles & 8 months and haven't found any answers. I hope this is helpful for someone.
SAme fix for me. Thank you for sharing the video bud.
No problem!
Unfortunately it didnt miraculously fix my 2024 with 40k on it. But it def needed cleaned that's for sure. It was a solid black chunk of buildup. Looks like I'm still heading to the dealer with the def system issue. But thanks anyway I'll def keep an eye on it in the future. 👊🏻
Sorry it didn't help with yours. I was honestly surprised at how nasty mine was with less than 10k miles on it. Goes to show how terrible the emissions crap is for our engines.
@@FixIt_Mann yes sir it's ridiculous. And I recently seen a CZcams short from a dealer working on new military trucks where he showed those are factory deleted. 🙄
@@randolph7214 I saw that too. That should tell us all something. Rules for thee, but not for me 😒
@randolph7214 It didn't work on mine either, although the MAP sensor did need to be cleaned.
However, reading articles & watching videos, I've learned that running below 1400 rpm for extended periods of time may be causing DPF problems. I had a P2002 code. I travel to work 45-60 minutes on the interstate if I don't have to stop somewhere. Then, I spend the day traveling secondary roads, lease roads, and right-of-ways, which puts me running below 1400 rpms. Only going above 1400 under acceleration mostly. The dealership is going to replace the DPF under warranty. I'm very skeptical of claims made by companies about their additives, but while waiting on parts, I used two bottles of Rislone DPF Cleaner in a half tank of fuel which makes it the same ratio as the directions and have been diligent about keeping the rpm's up on the side roads. The engine light went off and hasn't come back on. I don't know if it's the fuel additive, keeping the rpm's up, or the combination of both, but it seemed to work. I'm still having the DPF replaced under warranty. I've fought this for 28,000 miles & 8 months and haven't found any answers. I hope this helps.
@@chrisphillips9388 good feedback. Thanks!
Fantastic thank you very much
No problem! Hope this helped.
2024. 2500 HD at 12 k miles ...wow
if the sensore was that dirt I cant imagine what going into the engine.
@@cchast3 exactly! This emissions junk is ridiculous. Definitely not engineered for longevity.
Did you read the trouble code ?
Or just guess the MAP ?
My guess is you had an exhaust code and it straightened out….
But luck 🍀 works too
@@truckingoover I didn’t read the code. I tried this first since it was a simple check.
Would be helpful to know if you used a quality fuel additive regularly and or idle very much.
I've heard some say leaving the exhaust brake on cuts down on EGR. No idea if this is true or if it is even good for the engine.
Thanks for the video.
Prior to this video, I did not use fuel additives regularly. For the last 5 or 6000 miles I have been using @HotShotsSecret additive at every fill up and haven’t had any issues since. It’s worth a try on the exhaust brake. I just don’t like the way it shifts unloaded.
New major issue. As the crankshaft pin may snap off as a real issue….see banks or Dave’s auto as we must check this out asap!!!
This is a major issue …GM wtf
How many so far?
Same emissions error at 1500 miles. Taking to dealer
How did you get ride of the info warning????
@@gregwanner2543 it cleared on its own once I cranked the truck. Sometimes it takes 2-3 key cycles
I did it but my engine light is still on any tips
I’ve also had it happen and it ended up being an EGT sensor
Does this apply to the Gen 1 L5P?
Yes, I’m pretty sure it does. It’s a quick, five minute process to pop off the sensor with a 10mm socket and check it.
Now how do I delete the message in the screen ?
Mine went away after I started the truck and drove a few miles.
What spray u used to clean
I just used MAP sensor spray from the auto parts store
I have the same problem with my truck but this didn’t work. I have a GMC Denali 2017 Duramax
Unfortunately, with the emissions systems being so complex on these trucks, it could be numerous things.
@@FixIt_Mann Thank you for replying. Ima have to take her to Chevy given we just got her 2 weeks ago 😒 I guess thats what happens when we don’t do our research before purchasing a diesel truck. I just really wanted the her so my husband bought her for me 😖
@@lizdeville6226 no problem. These newer diesels with all of the emissions components are a pain. I’ve also had an EGR sensor fail and throw a similar code/light. Luckily, you can delete yours. There’s no tune yet for a 2024.
@@FixIt_Mann mine won’t delete. It will not let me “dismiss” it by pressing the check mark 😒 so I have to take it to get it serviced because idk what else to do 😫
@@lizdeville6226 I meant delete, as in, remove the emissions equipment and get a tune.
I tried but it doesn't work. :(
What year and model?
Were you able to fix it? I’m having the same issue