2005 silverado SS low oil pressure

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Uploaded by on Jun 15, 2011

Still have low oil pressure after installing Ls6 oil pump.

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Autos & Vehicles

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  • i have a chevy blazer with a 4.3 vortec that when warmed up runs at 20 psi and it has a high volume oil pump which is what your truck has so your fine as long as it doesnt go below were its at nothin to worry about

  • thats prenty of oil pressure

  • New oil pan gasket and o-ring for the pickup tube. I just replaced mine after having similar issues. Now it idles with 40psi.

  • Could be an oil pressure sending unit not properly reading pressure. You would have to hook up an oil pressure meter to the engine, verify pressures at specific RPM and compare. If you have high mileage and overhaul might be needed. Sensor is my first bet...Enjoy

  • bad main bearings will make pressure drop at low rpm.... usually more pronounced when warmed up, less when cold.

  • i got a 5.3 that lost oil pressure as well, have you found the problem?

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