GM Full-Size Trucks 1988-1998 Repair Information

Oil Pressure Sender

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OPERATION



The oil pressure sender relays to the dash gauge the oil pressure in the engine.

TESTING



  1. Check the instrument cluster fuse condition and replace as necessary.
  2.  
  3. Check the sender wire for damage and repair as necessary.
  4.  
  5. Unplug the sender electrical connection.
  6.  
  7. Attach one end of a jumper wire to the sender electrical connector and the other end of the jumper wire to ground.
  8.  
  9. If the gauge reads functions properly, replace the sender.
  10.  

REMOVAL & INSTALLATION



  1. Disconnect the negative battery cable and drain the engine oil.
  2.  
  3. Disconnect the sensor electrical lead and unscrew the sensor. The sensor can be found on the top side of the engine, near the distributor.
  4.  

To install:
  1. Coat the first two or three threads with sealer. Install the sensor and tighten until snug. Engage the electrical lead.
  2.  
  3. Connect the battery cable and fill the engine with oil.
  4.  

 
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