Rhythmic Click

[matt grz]

So from surfing the forums I’m thinking this rhythmic click that I am hearing at idle every half of a second or so (almost like an old clock) is due to the high pressure DI fuel pump?  Is there a fix for it to stop the clicking if that is what this noise is?  Thanks.

 

 

[newdude]

Normal.  DI high pressure fuel pump.

[matt grz]

Just now, newdude said:

Normal.  DI high pressure fuel pump.

Awesome, thank you.  Do all of the 5.3’s do it?

[RedLT]

6 minutes ago, Matt Grz said:

Awesome, thank you.  Do all of the 5.3’s do it?

I have 5.3 and it does the same. I had no clue what it was so took it to the dealer to ask, they confirmed the sound and said it was normal. They even showed me another Silverado with 40k miles and it was slightly louder.

[matt grz]

6 minutes ago, RedLT said:

I have 5.3 and it does the same. I had no clue what it was so took it to the dealer to ask, they confirmed the sound and said it was normal. They even showed me another Silverado with 40k miles and it was slightly louder.

Awesome, thank you.

[haider320]

My 2018 5.3 made that same exact sound as my 2021 5.3.  

[K455]

My 2019 custom TB 5.3 does the same thing especially cold sounds like a belt coming around(pulley) then making a click every revolution. 27,000 miles on mine done it since new.