My check oil pressure light came on in my 99 chevy silveado z71. It was time for an oil change anyway, so i changened the oil. After i changend the oil, the light is still on and the truck is making a really bad clicking noise.
The 'check oil pressure' gauge indicates less than 5psi of oil pressure. This usually indicates either a oil pump pick-up screen is plugged up or the crank bearings are worn to the point that oil flow is not being restricted. Both require the removal of the oil pan to check for the problem.
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