2013 Chevy Tahoe low oil pressure

[scomis]

I had a similar issue in my 2009 Tahoe. It would lose pressure, but if I shut it off and restarted it would come back, albeit lower than where it should be. Then after a few minutes would drop again. I changed the pressure sender and the little screen and that didn't help. So, after reading everything on this forum and seeing that people have had issues with certain oil filters causing this type of issue, I took it to Jiffy Lube and got a conventional oil change (only had 1000 miles since the previous oil change). That fixed it and now 4500 miles later not a single oil pressure issue. Never heard of oil filters being able to fail like that in all the years I have owned and worked on cars and neither has anyone else that I know. So strange.

 

[steiny93]

Also another question, if the oil pressure is fine when first started, then drops after driving, how would that work using a gauge? I haven't driven the Tahoe in weeks. would I have to try driving it again to see if the oil pressure drops again then check with a gauge or would we just check without driving first?

You add a mechanical gauge (using a different location then the current sending unit) and zip tie it so you can drive with it attached. Then you can compare the gauges to each other.