L5P Duramax “Service Emissions System” Solution

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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.

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Опубликовано:

10 мар 2024

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Комментарии : 31

@hdramon1 Месяц назад

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.

@FixIt_Mann Месяц назад

Thanks for the great feedback! Glad it helped you as well 👍

@robertwhichard316 Месяц назад

100% on target. Your instructions perfect 👌. I had 14k miles. Thanks for the video

@FixIt_Mann Месяц назад

I'm really glad this was able to help someone else and hopefully avoid the headache of a visit to the stealership.

@TK-om9xp 2 месяца назад

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.

@FixIt_Mann 2 месяца назад

Really glad this helped you too. Our wonderful EPA helping us out with longevity on these engines 🙄

@punisherwarzonecallofduty9757 14 дней назад

Fantastic thank you very much

@FixIt_Mann 14 дней назад

No problem! Hope this helped.

@trace6402 5 дней назад

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.

@FixIt_Mann 5 дней назад

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.

@jponyboyace 2 месяца назад

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!!!

@jponyboyace 2 месяца назад

This is a major issue …GM wtf

@garysarratt1 29 дней назад

How many so far?

@ericwells7203 Месяц назад

Same emissions error at 1500 miles. Taking to dealer

@OiCLife 2 месяца назад

What spray u used to clean

@FixIt_Mann 2 месяца назад

I just used MAP sensor spray from the auto parts store

@garysarratt1 29 дней назад

Does this apply to the Gen 1 L5P?

@FixIt_Mann 29 дней назад

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.

@zackwomack 28 дней назад

I did it but my engine light is still on any tips

@FixIt_Mann 28 дней назад

I’ve also had it happen and it ended up being an EGT sensor

@lizdeville6226 Месяц назад

I have the same problem with my truck but this didn’t work. I have a GMC Denali 2017 Duramax

@FixIt_Mann Месяц назад

Unfortunately, with the emissions systems being so complex on these trucks, it could be numerous things.

@lizdeville6226 Месяц назад

@@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 😖

@FixIt_Mann Месяц назад

@@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.

@lizdeville6226 Месяц назад

@@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 😫

@FixIt_Mann Месяц назад

@@lizdeville6226 I meant delete, as in, remove the emissions equipment and get a tune.

@punisherwarzonecallofduty9757 14 дней назад

Now how do I delete the message in the screen ?

@FixIt_Mann 14 дней назад

Mine went away after I started the truck and drove a few miles.