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Home >> GMC >> 1989 >> Forward Control 7.4 W, Standard >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Panel - Standard & Electronic >> Testing >> "Check Gages" Light >> "C", "K" & "S" Series

"C", "K" & "S" Series

  1. If "CHECK GAGES" light does not come on with high temperature, go to next step. If "CHECK GAGES" does not light with low oil pressure, go to step 3). If "CHECK GAGES" light is on all times, go to step 4).
  2. Check for burned out "CHECK GAGES" bulb. Replace bulb if necessary. Check for inoperative temperature gauge circuit. Replace temperature gauge if necessary. If temperature gauge circuit is okay, replace defective instrument cluster.
  3. Check for burned out "CHECK GAGES" bulb. Replace bulb if necessary. Check for inoperative oil pressure gauge circuit. Replace oil pressure gauge if necessary. If oil pressure gauge circuit is okay, replace defective instrument cluster.
  4. Check for inoperative temperature and oil pressure gauge circuits. Replace temperature and/or oil pressure gauge if necessary. If temperature and oil pressure gauge circuits are okay, replace defective instrument cluster.
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