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Home >> GMC >> 1985 >> Magnavan 6.2 J, 475/M40 >> Repair and Diagnosis >> Electrical >> Gauges >> Instrument Panel >> Testing >> Indicator Warning Lights >> Temperature Indicator

Temperature Indicator

  1. If "HOT" indicator light is inoperative when cranking engine, check for burned out light bulb, open light circuit or a defective ignition switch.
  2. When light is on with engine running, check for coolant temperature above 258°F (125°C), grounded condition between light and switch, defective temperature sender or ignition switch.