GM S10/S15/Sonoma Pick-Ups 1982-1993 Repair Manual

Low Oil Pressure


When the engine presents low oil pressure, check for the following, as necessary:

Low oil level in the crankcase.
Blocked oil pickup screen or tube.
Malfunctioning or excessive clearance of the oil pump.
Sticking oil pressure relief valve.
Very thin engine oil.
Worn (loose) main, rod or camshaft bearings.