LEMON Manuals: Even more car manuals for everyone
Home >> GMC >> 1997 >> C3500 HD 6.5 F, Automatic >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Testing & Diagnosis >> Oil Pressure Gauge >> Gauge Always Indicates Low Oil Pressure

Gauge Always Indicates Low Oil Pressure

  1. Disconnect oil pressure switch/sender connector. Turn ignition on. If gauge indicates high pressure, replace fuel pump/oil pressure switch/sender.
  2. If gauge indicates no or low pressure, locate and repair short circuit in Tan wire between fuel pump/oil pressure switch/sender connector and instrument cluster connector. If wire is okay, replace instrument cluster.