2013 Silverado 5.3 engine knock?

[f0st3r]

I am test driving this truck for the weekend. But I have noticed that it has a knocking/slapping noise coming from the truck. It only does it at idle and is coming from underneath the truck. If I listen from under the hood, I cannot hear anything. And its not rod knocking loud.

I have heard this noise on my 08, but its pretty rare and usually goes away. I have linked a little video for you to listen to. Is it common? Should I mention it to the dealer? Avoid the truck all togather? lol.

Thanks for any advice!

 

 

[f0st3r]

After getting under the truck and listening further, it sounds more like its coming from the tq converter or transmission. I put my ear under the oil pan and could not hear it as loud as under the tranny. Could the TQ not have enough fluid? I honestly dont want them doing engine work on a brand new truck.

[mattymax]

Sounds normal to me

 

Matt

[f0st3r]

Kinda what I was thinking, being a new truck I am looking at every little thing. Always get good advice here, why i asked.

Thanks again!

[DaveH71]

just sounds like exhaust pulses to me, definitely not a knock.

[GMCustomerService]

f0st3r,

If you are having any concerns about the vehicle, I would have to recommend test driving a similar vehicle to see if you hear the same noise. Keep me posted on your progress. Let me know if you need anything.

 

Tricia, GM Customer Service.