2016 Silverado NIGHTMARE

fondupot · July 14, 2016

That's what every K2 motor I've heard sounded like. Can you take a vid of one that doesn't sound like that?

Yup. I agree.

pm26 · July 14, 2016

Could this be a combination of injector noise and the infamous "piston slap"? We all know that some trucks had serious piston slap issues in the past. Has GM ever corrected that issue?

OmniCamaro · July 14, 2016

Fan, alternator, ac bearings?

Another day in paradise[emoji631]

GMCustomerService · July 15, 2016

Good afternoon Frank120,

We would like to extend our sincerest apologies regarding your situation, and apologize for any inconvenience this concern has cause you. We recognize that at this time you are just updating other forum members of your experience. However, we would be more than happy to look into this situation further for you. Please private message us with your VIN or case number so we can further assist you.

All the best,

Julianne M.

GM Customer Care

It's not the normal direct injection noise. I am VERY familiar with engines and direct injection. I've had my truck running next to 3 other 2016 5.3s. I feel It's not normal because it's not a constant noise. Direct injection if you take a scope to it and examine wave patterns you can see the on time of the injector and the off time. You will see that it is always consistent. Which is why I know injectors are consistent. This noise I am hearing is not consistent. Its always a random pattern with different noises.

Victory14red · July 15, 2016

Sounds like torque convertor rattle to me. Is it louder underneath near the back of the engine?

Could also be the high pressure fuel pump which is in the lifter Valley. It is gear driven.

Frank120 · July 16, 2016

Victory is is loudest right in the top middle of the front.

Sounds like where the HPFP would be

gonzoid · July 16, 2016

12 days later,do you have an answer? This noise does not sound right

HondaHawkGT · July 16, 2016

Could this be a combination of injector noise and the infamous "piston slap"? We all know that some trucks had serious piston slap issues in the past. Has GM ever corrected that issue?

Nope. But other manufacturers have followed GM's example. Toyota has had nasty piston slap with their 5.7 V8. Net fit is here to stay. Now they jist coat the pistons to attempt to hide the noise. It's a race to the bottom.

HondaHawkGT · July 16, 2016

Victory is is loudest right in the top middle of the front.

Sounds like where the HPFP would be

They should pull the intake manifold and check the fuel pump. Some have had a loose fuel HPFP where it bolts to the valley.

DirtyMarcus · July 18, 2016

That sounds more like the bearing/bushings on the rocker arms. My LS1 has that very distinct "sewing machine" sound. It pretty common and not a concern for the LS engine family, as far as noise goes. I plan to do the trunion upgrade when i replace my springs again. http://www.texas-speed.com/p-5213-texas-speed-performance-retro-fit-rocker-arm-trunion-kit-all-gm-ls-engines.aspx

To be honest I havent noticed it on my truck and the only time I notice it on my LS1 is when I pop the hood. I seriously doubt they will replace the lifters just for some noise but you never know.

gilleydog · July 18, 2016

if wiring got wet it should be a buy back had the same issue with a 2015 ford edge they bought it back never trust wiring that has got wet good luck

f8l vnm · July 18, 2016

Same noise on my 16. Sloppy I would say.

Frank120 · July 18, 2016

Gilleydog yeah exactly they should buy it back! But GM is a joke. They don't care about their customers. I should've went with a different brand. My wires were literally under water for who knows how long. My guess is first time it saw rain when it was on the lot. I'll just have to learn from this situation and just never buy a GM again unless they can prove they actually care about me

Beer Belly · July 18, 2016

Give this a listen....my "13 Silverado 5.3... http://vid4.photobucket.com/albums/y128/RicksPhotos/My%20Truck/DSCN2749_zps20a944f6.mp4

....on the third try to find the knock, it finally happened in their shop....they tore it apart, and had a GM Engineer look at it.....replaced the #8 Piston, and it was good for about another 9K, then it started to come back....that is why I'm in my '15 Sierra.

keeper18 · July 19, 2016

I do believe there is a TSB out regarding ticking noise and it has something to do with cylinder cancellation. I'll look it up on Wednesday when I get back to work.