5.3 Engine "Tick" noise

[Entryteam]

Please forgive me if I sound ignorant... but why is the little "tick" noise in the 5.3 there?  I've been told it's normal.

 

Can anyone elaborate on that for me?

 

thanks, guys!

[B R A D]

I've been told it is the direct injection. I had a Cadillac CTS that you couldn't hear it on but definitely hear it on my '18 Sierra while I don't remember it on my '16. I do know it sounds exactly like an exhaust leak and is annoying.

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[SARNCAN]

Until now I couldn’t find what it is, but the only thing that I think is close to is the oil pump

[flyingfool]

usually a tick means a lifter has collapsed on the AFM. before you panic just do a compression check ..

[Jaychevy81]

What year is it it could be the vacuum pump. They were redesigned after 2016 some complaints were a ticking noise as well.


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[mookdoc6]

On 9/18/2020 at 4:39 AM, Jaychevy81 said:

What year is it it could be the vacuum pump. They were redesigned after 2016 some complaints were a ticking noise as well.


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I just replaced vacuum pump on mine couldn't stand the noise anymore so yeah it's the source of one tick!

[Norcent]

I have a slight tick as well I'm not even to 20k yet on my 18... I was told it was injector tick but its not consistent enough in my opinion to be that. As in one day its there and the next its gone... then a few days later its back...