04 Suburban oil pan, whew

[Sgt Gus]

Holy oil sludge batman! Might not hurt to replace the oil pressure sensor, don't know if your era has the screens on them or not. I would imagine if it did it would be clogged up from that sludge!

Yeah, I thought of that too. I might.

 

[Sgt Gus]

This is a good read here, but like I said, this is for 07-14. Not sure about your gen. @Old77 ?

IMPORTANT: The Chronicles of Low Oil Pressure by 07burb

Warning: this is a LONG read but may hold valuable information for others experiencing this same issue. This is what I've experienced and what seemed to work for me. Things may be different for you. Let me start from the beginning....there's also an amendment at the end of this post ---In June...

www.tahoeyukonforum.com

 

[Sgt Gus]

That is a good read. Similar solution, seafoam for clean out which you may have seen results, and been running the oil change with the Rislone. Quiet now.
I use high milage stp synthetic and get their extended life filters (10,000) and change every 5-6k.
Been doing awhile, but I know the PO and doubt he used anything good other than cheap.
I didn't realize the oil pressure screen was that big. Definitely looks like worth the curiosity to change it and sensor.
Glad I didn't get into lifters. I can't be rebuilding two engines, lol.