Cold Engine Noise

[Airman68]

I have a 2008 Yukon XL with a 5.3L. It currently has 210k miles. I have had it since 190k and have the afm disabled. In the morning when the engine is cold, it almost sounds like a really quiet diesel engine. Just a slight lifter noise? I cant say when it started. Heck it's probably been doing it for a while. Once the engine warms up, it's almost non-existent. Just curious what everybody thinks. This along with the common oil leak issues is getting me to consider looking for a newer rig. I'm just curious how serious this is.

 

[Geotrash]

I have a 2008 Yukon XL with a 5.3L. It currently has 210k miles. I have had it since 190k and have the afm disabled. In the morning when the engine is cold, it almost sounds like a really quiet diesel engine. Just a slight lifter noise? I cant say when it started. Heck it's probably been doing it for a while. Once the engine warms up, it's almost non-existent. Just curious what everybody thinks. This along with the common oil leak issues is getting me to consider looking for a newer rig. I'm just curious how serious this is.

Piston slap when cold is common on these. Both of my 6.2's do it. If you can post a video here (upload to YouTube and post the link), we can help you determine what it is.