Another 2015 Silverado HD oil pressure question

[coolpup32]

Yea, i hate to beat this dead horse again, but i cant seem to find an answer in my searching.

 

2015 Silverado 2500 HD 6.0 gas..

 

Purchased this used truck a few months ago and noticed at idle the oil pressure was pretty low, around 10-12 PSI.  I finally changed the oil with 5w-30 dexos and wix filter, after a few hundred miles, i'm getting Engine oil pressure sensor problem (P0521).   I just ordered a new sensor, it will be here in a few days... i'll replace it and remove the screen, hopefully that's all it is, since this is the cheaper/easier, i figured this was a good place to start.

 

TLDR

My question is, do these engines still have the same issues as the older 5.3's and the o-ring on the oil pickup?  OR, are spun cam bearings more common?

 

What are your thoughts?  

 

FWIW, the truck shows 117k miles, but the engine block is orange, to me this indicates  its been replaced.

 

any help is appreciated!

 

[newdude]

On 5/3/2025 at 3:52 PM, coolpup32 said:

Yea, i hate to beat this dead horse again, but i cant seem to find an answer in my searching.

 

2015 Silverado 2500 HD 6.0 gas..

 

Purchased this used truck a few months ago and noticed at idle the oil pressure was pretty low, around 10-12 PSI.  I finally changed the oil with 5w-30 dexos and wix filter, after a few hundred miles, i'm getting Engine oil pressure sensor problem (P0521).   I just ordered a new sensor, it will be here in a few days... i'll replace it and remove the screen, hopefully that's all it is, since this is the cheaper/easier, i figured this was a good place to start.

 

TLDR

My question is, do these engines still have the same issues as the older 5.3's and the o-ring on the oil pickup?  OR, are spun cam bearings more common?

 

What are your thoughts?  

 

FWIW, the truck shows 117k miles, but the engine block is orange, to me this indicates  its been replaced.

 

any help is appreciated!

 

 

 

6.0 doesn't use the screen under the sensor.  

 

Hopefully you ordered the GM sensor?  Modern GM stuff is very picky when it comes to sensors.  

 

Pickup tube is a possibility.  We've seen chewed cam lobes on these in the past but they came in with good oil pressure that I can recall.  Had noise though, a squeak or knock.  

 

Orange block...orange like rusted?  Or painted orange?  

Edited April 16 by newdude