No Oil Pressure

[jwetzel78]

Hi all...I have an 07 4x4 Yukon. My engine light came on and the code was showing for an Oil Sending unit. I had this replaced. When I drove the truck home, a warning light came on for Low Oil Pressure. The truck was reading 0. The shop changed out the Sending Unit again thinking it was a bad part. The truck is getting around 40 on the gauge until the engine is warm then it bottoms out again. They are now replacing 2 gaskets and the oil pump. If this is not wrong, I do not know what else to check? Has anyone had this same issue? Thanks

 

[Blazed]

Low tension piston rings I bet I was being taught about this the other day it's also why the 5.3 burns oil

 

[ulakovic22]

Mileage? Any previous issues with consumption? Have you or the shop verified oil pressure cold/warm with a manual gauge so you can take the sending unit out of the equation?

 

[jwetzel78]

I have a 2007 with 107000 miles. I noticed that we would have low oil during long trips. I do on occasion have to put oil in it. I have always used synthetic oil if it matters?? Yes the shop.verified the pressure gauge mechanically. They figures if was the gauge but it wasn't.

 

[ulakovic22]

If that's the true pressure then what they are doing now is a prayer. Hopefully it's answered, if not you are looking at a rebuild or take out because your bearings are gone.

 

[blairian]

X2

Hope it gets solved though..

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