Oil pressure dropping to 0

Asked by Bthaub Jan 12, 2020 at 12:36 AM about the 2010 GMC Sierra 1500 SLE Crew Cab 4WD

Question type: Maintenance & Repair

My oil pressure drops to 0 after about ten
miles. Changes the sensor and screen under
sensor. No change. Changed oil pump, O ring,
cleaned oil pan and pick up. Was at 55 psi
cold and went down to 40 a it warmed up.
Then slowly dropped to 0 and the light came
on about 5 moles from home. Shit it off and let
it sit for about 10 minutes. Fired it up and
drove home. Dropped to about 30 while
driving home but didn’t drop all the way
down. If I drive it for about 10 miles it drops to
0.

1 Answer

Use a mechanical gauge to verify the oil pressure. I think your engine may be worn out.

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