LEMON Manuals: Even more car manuals for everyone
Home >> GMC >> 1978 >> Forward Control 5.7L Eng VIN L, Automatic Trans, Trans Mfr CD 475/M40 >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Switches, Gauges & Instrument Panels >> 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, short between light and switch, defective temperature or ignition switch.