issue Noisy idle, clattering sound

[Yooper1]

My 5.3 2014 - Silverado makes a clattering noise while running/idling in park. Dealer affirmed "hearing it" saying may be "injector" noise. Advised to put some more miles on it and then bring it back in. They would compare it to another 2014 running/idling at that time. I know my 2010 was much quieter running/idling in park. Friend of mine (Ford guy) pointed the noise out to me when I stopped bye to "show off" my new ride. Embarrassed!!!!!

[trucken99]

Run some 93 gas and see if it make a differance.

[seamonster]

its just the direct injection that is how they sound

[chuckl1218]

My 2014 5.3 does sound different and louder than my son's 2010 5.3. I've read several times that this is due to the 2014 "Direct Injection" type fuel injection vs "Port Fuel Injection" of the previous years. Direct Injection is noisier.

[Kennedy81]

Yep, I asked my dealer about this as well, they said it was just injector noise, and that they all do it.
I had another 2014 as a loaner while they did the recall update, it sounded the same.

[scott19677]

MINE TOO !

[philbun]

Mind sounds same also. Direct Injection is the reason.

[Pardo714]

Mine sounds the same and I hate it!!! Honestly it's the one thing that drives me crazy every time I remote start and walk up to it or if I'm at a drive through. I think my 04 f350 diesel was smother. Someone mentioned using 93 octane would that have any impact?

[mzodarg]

Think the direct injector noise is bad, walk to the rear near the exhaust and listen. Sounds like a New Holland tractor.

[HondaHawkGT]

There's a reason GM buried the 3.6 High Feature DI V6 in so much noise insulation... injector noise. All the more reason to get a loud exhaust.

[fondupot]

As others have said. Its the direct injection that makes these motors sound like a damn sewing machine. My dads buick enclave sounds just the same. So did my last car with DI.

[Lorna Therrien]

My 2015 Denali 1500 has been in the shop for 8 days now. Symptoms. Flashing check engine light and traction stability light lit up. Truck losing power and sounding like it wanted to stall. Slight odour of burnt oil. Po300 code. First they could not figure it out. Had to wait three days for senior tech to come to work?!? Diagnosed as faulty fuel to injector. Waiting for snail mail to bring it in from Kentucky. I'm in northern British Columbia Canada. Hopefully that fixes it. Wtf

[Lorna Therrien]

I mean faulty fuel injector. Autocorrect hmmm

[abager2]

Just bought a used 2014 scsb 1500 5.3 auto a couple weeks ago with 30,000 miles on it...if i had taken it thru a drive thru when i test drove it and heard the ticking of the injection pump i would not have bought it...the reason i traded my sierra crew in was because i was sick of the lifters ticking....never even noticed it on test drive but its driving me nuts..just bought a cat back system to make it a bit louder and mask it a bit...gonna put it on this weekend...im wondering if theres any way to insulate around it with sound deadener, or if i just have to crank up the radio...

[migizi]

reviving an old topic...

did anyone ever come up with a fix for this annoying noise?