GM Blazer/Jimmy/Typhoon/Bravada 1983-1993 Repair Guide

Negative Oil Pressure

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When the engine presents no oil pressure, check for the following, as necessary:

  1. Low oil level in the crankcase.
  2.  
  3. Broken oil pressure gauge or sender.
  4.  
  5. Blocked oil pump passages.
  6.  
  7. Blocked oil pickup screen or tube.
  8.  
  9. Malfunctioning oil pump.
  10.  
  11. Sticking oil pressure relief valve.
  12.  
  13. Leakage of the internal oil passages.
  14.  
  15. Worn (loose) camshaft bearings.
  16.  

 
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