OK so I just came back from Chevy and observed with the foreman of the service department we listened to this video first and my car second, again, at cold start. He told me it is the oil pump sucking the oil up through the oil pump mechanism and it's the sound of the pressure of the oil going through the pump so it could feed the engine and its normal. The reason why it doesn't make this sound after cold start is because it drained out of the oil pump mechanism. Fluid pressure racing through channels to destination. I'm not totally convinced that this is normal. Especially when you hear other people saying it's the starter, or it's the fuel injectors, etc. He said the old car pumps were submerged in the oil pan and the new ones are not that's why they make a noise. Don't know why they changed the engineering. It is a ridiculous sound, it sounds like metal to metal. If anybody has a difference of opinion, a more technical response to this freaking noise, please post.

@TRUMP_WAS_RIGHT_ABOUT_EVRYTHNG

5 ай бұрын

I am no engineer but having an oil pump not submerged in the oil reservoir just sounds like a horrible idea. Maybe that's why my 2018 had metal shavings in several oil changes. I drive this truck like my grandmother most of the time and I still get tiny pieces of metal shavings in my oil when I change it. Definitely not a fan of modern engineering between the stupid 8 cylinder pretending to be a 4 cylinder half the time while I'm driving and all the other weird engineering signs makes me miss my 1984 K20

It’s normal, the high pressure fuel pump for the direct injection is mechanical, when the truck sits a while the pressure leaks back the sound you hear is the pump rapidly building pressure again. You can still hear the pump as a tick while the engine runs warm.

@jordanbromwich1149

5 жыл бұрын

Thank you very much for the info. You have helped to alleviate my concerns.

@happyhippo58

5 жыл бұрын

Jordan Bromwich no worries, my 17 double cab did it, my 18 crew cab I traded my 17 for does it, my wife’s moms 16 does it, and my buddy’s truck does it too...

@swcopmac8093

4 жыл бұрын

​@@happyhippo58 , Thanks for your post. I was wondering how you know concretely know that it's definitely the high-pressure fuel pump. I have been on several KZread channels with several explanations like starter housing, needed a new starter, fuel pump as you said, oil pressure pump priming, its normal, etc. Just because many people on the post say it's normal they all do that doesn't mean it's NOT going to shorten the life of the car. How did you come up with your solution to this noise? Thanks for your help

@happyhippo58

4 жыл бұрын

swc opmac I worked as a supplier for General Motors providing X-ray inspection of these motors (gen5) and the previous gen4 v8 as well as the current HFV6 block. So I was around all the talk when things came up. They all do it (gen5) after sitting a while. I don’t know about 2019 models though.

@swcopmac8093

4 жыл бұрын

@@happyhippo58 thanks I have a 2017 and just got back from chevy and this is what they said OK so I just came back from Chevy and observed with the foreman of the service department we listened to this video first and my car second, again, at cold start. He told me it is the oil pump sucking the oil up through the oil pump mechanism and it's the sound of the pressure of the oil going through the pump so it could feed the engine and its normal. The reason why it doesn't make this sound after cold start is because it drained out of the oil pump mechanism. Fluid pressure racing through channels to destination. I'm not totally convinced that this is normal. Especially when you hear other people saying it's the starter, or it's the fuel injectors, etc. He said the old car pumps were submerged in the oil pan and the new ones are not that's why they make a noise. Don't know why they changed the engineering. It is a ridiculous sound, it sounds like metal to metal. If anybody has a difference of opinion, a more technical response to this freaking noise, please post.

Mine does the same exact thing, always from a cold start! I was reading some online forums, and they are saying this is a normal sound, and has to do with the DI fuel injection system. Nevertheless it bothers me to, I'm doing a oil change this weekend and adding Lucas oil additive, not sure if it will help at all, but I'll feel better knowing I'm taking a extra precaution for wear protection. Good luck!

@ortizdominguez4190

3 жыл бұрын

Did it help with anything?

@specialestness

3 жыл бұрын

I wouldn’t be adding anything to the 0w20 unless you really have an issue you’re trying to hide

@loganclunan1110

2 жыл бұрын

Mines doing the same it's worse if you haul ass then park it over night you can hear it worse

Beautiful truck

She was so happy to wait for that video😂

Okay so a lot of guys are saying it is the oil pressure system they changed that is causing it, and I believe that the most out of the other theories as this is happening with my 2015 5.3L. My only concern is why did it start to happen at 150,000 miles and not earlier

AHha!! Exact noise my 2015 makes! I took it to 2 dealerships, and they all said it was normal. Then they printed out a sheet of noises these Silverado’s and Sierras make. They said the DI’s and the oil pumps makes this braap sound on cold start up. GM’s new tech.. still irritates the hell outta me..

@zachwilschetz6995

Жыл бұрын

My 2015 does it too

I have a Silverado ZR2 2023 and is also doing the same thing. Having the best truck out there making this sound is just frustrating. Took it to the dealer and they said there is nothing wrong.

Guys this is a cam shaft problem, I took mines too the shop it judged started doing that noise. I had the truck since 15k and now it has 90k. Luckily I'm still under warranty. Anybody truck make this noise have them fix it before your warranty runs out! ASAP

People who say it's normal are wrong. It's not a normal sound. My truck did not make that sound when it was new

Thanks for the video my 18 Yukon does the same noise.

Mine does this too and I’m trying to find out why. It’s a 2016 5.3. I only notice it when using auto start but that may just be because I can’t here it from inside the cap.

Nice I didn't realize my 18 Silverado had similarities to the a-10 warthog but now I do.

Take your sawall and cut the exhaust and put it straight pipe ! It fix every sound you get 🤪🙌🏻👍

My 18' silverado lt z71 does the exact same on cold start and only after its been sitting for a long time off. Did some research and apparently most all of them do it so its likely not a worry. If you take it in let me know what they say

@jordanbromwich1149

5 жыл бұрын

I went to the dealership and started many different trucks on the lot. All the trucks made there same noise with slight variation in the degree. Ultimately I think it is normal and I am going to try not to let it bother me any more. Good luck on your end, please let me know if you learn anything.

@rickyace09

3 жыл бұрын

It’s the new style oil pump that Chevy starting using for this platform. There’s actually a bulletin for it. Having the same issues with my Silverado.

@crisramirez4553

3 жыл бұрын

Same thing with my Z71

Mine just started doing the same thing 60,000 miles 2017

I took my truck in for a 2nd opinion because the noise is super loud if the temp is under 30 and was told it’s a bearing in the starter which I totally disagree. Doesn’t make a sound after the 1st cold start unless it sits for an extended period and again if the temps on low.

@specialestness

3 жыл бұрын

The sound heard in this video is the mechanically driven high pressure fuel pump rapidly building pressure. It’s normal for this engine and the pump can typically be heard as a low groan among the ticking of the injectors at idle.

@Rymo_009

2 жыл бұрын

@@specialestness I hear the moan, they said that is normal too. You can hear it pretty good when your at a drive through.. but that Braaap on the startup… that’s the main issue

I have a 2024 6.6 gas and noticed it doesn’t do it so bad if I open the door first or unlock button with key fob I think it’s because it kicks the fuel pump on for a second to prime the system

Mine does it but even after I start it it makes it but quieter and when I accelerate I can slightly hear it for just a split second

It's the exhaust valve for afm dod gets stuck

I had a 2003 acalanche that did it as well..the colder it was the louder it was..other then the quick noise there was never any issues or damage..my 2018 does it a little as well when its cold..commen issue I guess

2023 5.3 and mine does it when it gets really cold out sounds the exact same

I got a 2015 yukon xl with the 5.3 and i have this sound at cold start ups but lasts a while

My 2018 chevy Silverado does exactly the same sound, the weird thing is it wasnt doing it last year winter, it started this year.

@fordeaterdg

2 жыл бұрын

Same, just started... thought it was the vacuum pump going out (was leaking) so deleted it, noooooooope...still grinds on cold starts 🤬🤬🤬

I have an 18 GMC Sierra 5.3 and mine did this but over the last 3 months it has gotten much louder and lasts much longer. As soon as the truck starts to warm it fades away.

My truck is making that sound followed by a mast clanking sound only on cold starts and goes away about 10-15 seconds in

I have this noise on a 2006 Chevy express! With new starter.. still trying to figure out what it is.

My 2014 GMC sierra does the same as well but its more of a whistling noise

My 16 sierra dose the same thing every time as well. Same thing let me know what you find out

@jordanbromwich1149

5 жыл бұрын

I went to the dealership and started many different trucks on the lot. All the trucks made there same noise with slight variation in the degree. Ultimately I think it is normal and I am going to try not to let it bother me any more. Good luck on your end, please let me know if you learn anything.

my 2015 does this too and along with it it maintains a low growl from the same whatever causes this noise. really I can hear it whine all the time because I have sharp hearing, sounds almost like power steering but since these have electronic assist that cant be it. I am starting to think it is just a normal thing for these as annoying as it is.

@TheAbaker87

Жыл бұрын

Pop off your serpentine belt and see if your water pump has a bunch of slop in it. Had the same issue recently and that cleared it up.

Yeah my 16 silverado does the exact same noise it had me a little worry some

My 2017 does this as well.

Worn out idler pulley or alternator

My 2016 does the exact same thing

Mine is 2016 5.3 silverado 4wd doing the exact same noise I'm hoping it is a simple unexpensive fix, with temperatures dropping it seems it has gotten louder, any suggestions?

@jeremiahcochran2200

Жыл бұрын

Have you found anything out about it

@lopezamartinzac

Жыл бұрын

@@jeremiahcochran2200 spring of this year came in weather was a bit more warm hasn't done it since

I had this problem too and it was eliminated with replacing STARTER

@alazz912

2 жыл бұрын

How many miles did the truck have when you replace the starter. The noise is completely gone?

Mine does it too

I have a 2018 silverado 5.3 and mine does this it, sounds like the oil drains out of the system and its a rattle of something as it is coming up pressure like lifters or bearings. Sounds like crap.

@specialestness

3 жыл бұрын

Its the mechanically driven high pressure fuel pump rapidly building pressure. It turns into a low groan among the ticking of the injectors at idle. Sounds like crap but nothing wrong with it.

Normal

I have the same issue what is it and have you fixed it yet

I have a 2018 silverado with the 5.3 and it does the same thing. Ive noticed the colder it is the louder it gets. It kinda worries me. Any fix for this??

@rickyace09

3 жыл бұрын

Mine does the exact thing. Dealer just called and mentioned it’s the starter bearing. Doubt it.

@Rymo_009

2 жыл бұрын

@@rickyace09 did you ever get it fixed? Was it the Oil pump? Or is this in fact normal?