Alpe

To add on to this post my truck did not throw any DTC's

Fixed this problem on 2015 LT 5.3 L83 engine... After chasing the puffing/popping sound I did a compression check on bank one. Cylinders 1-3-7 had 240 psi and cylinder 5 had 140 psi so after checking valves and valve springs and valve train and finding no problems I removed the intake and when cranking the engine over I found the noise and air coming up thru cylinder 5's direct injection injector. Removed the fuel rail on left head and injector 5 and found the teflon seals gone around the bottom of the injector. Replaced all 8 injectors and high pressure fuel lines and ALL IS GOOD...

Reaching out to defo26 What was the problem with your Silverado's motor??? I have the same problem and there's no diag codes associated with this issue... Has anybody out there solved this problem or have insight into it. Thanks

My truck is a 2015 Silverado 5.3 L83 double cab LTZ 4WD

Yes that's the video The post never said what the issue was???

There was a post by defo26 with video and sound. I'm having the same issues. Puzzling for sure...

Exhaust bolts are tight. Sounds like it's from intake manifold/cylinder head intersection area.

Popping or puffing sound from left side of intake or cylinder head. No CEL I don't think it's valve train. Could fuel injectors leak air from cylinders,seems like it's cylinder 3 or 5...

What was the problem and how did you fix it???