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Rear main seal and oil pan gasket leak?

Tiny
CODY CAMPBELL2
  • MEMBER
  • 2013 CHEVROLET SILVERADO
  • 5.3L
  • V8
  • 4WD
  • AUTOMATIC
  • 166,920 MILES
I have oil leaking from somewhere under my truck. There is oil all the way from the oil filter back to the transmission. It's not the oil cooler lines, the lines were changed to help locate the leak. It doesn't leak enough to have a puddle under my truck so I can't pinpoint it. But the center cap for the rear main seal has a drip ready to come off every time I'm under it looking. My question is, how do I change the rear main seal and the oil pan gasket to hopefully stop this leak problem?
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Saturday, January 14th, 2023 AT 3:57 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
That is a heck of a crew you got going there. :) I would use a flashlight to check the engine oil pressure sender which if it is leaking it will pour oil out over the rear of the engine down the back and make it look like the rear main or pan is leaking. Here is the location of the sender and how to change it out in case I am correct. Check out the images (below). Let us know what happens and please upload pictures or videos of the problem.
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Saturday, January 14th, 2023 AT 1:20 PM

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