2011 Chevy 1500 LT crew - 144k miles
So, after countless hours of searching, I’ve decided to post here in desperate need of help.
My truck is currently in the shop, and on its 3rd mechanic trying to diagnose/fix the issue.
Originally I was getting an oil pressure sensor unit code months ago, and about a month of driving later, and I finally lost my oil pressure gauge (dropped to zero) but the truck was perfectly fine.
No loss of oil, etc.
So I brought it in to get it fixed and change the oil - they put an OEM part in and changed the screen.
Reset everything and I picked it up, a few moments later my check engine light returned.
Scanned it when I got home, same error code - active.
Checked for oil leaks, etc - nothing.
Returned a month later for them to fix it, they put in another OEM part and new screen…drive it 3 miles down the road, and it trips again.
They’ve checked the valve cover gasket and checked the PCM, everything seems fine.
The truck is not burning oil either.
I’ll add that my oil pressure gauge on my dash works fine now since they swapped sensors too.
Everyone is stumped on what to do, and I’m about to potentially go down the rabbit hole of ‘throwing parts at it’. Starting with the PCM and then the valve cover gasket, and many thousands of bucks potentially.
Does anyone have the slightest idea what’s going on? The PCM is throwing no other codes either, he has graphed and checked it.
Is it possible for the PCM to be corrupt without it giving errors, etc?
The tech is a 30 year vet, and a family friend - so by no means is he stupid. But this has stumped two other techs with equal experience too.
Now my truck is past inspection, and with my Check Engine light on, it’ll never pass. Plus I’m still half way on my loan, so just selling it isn’t an option.
Help!!!!
