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Home >> GMC >> 1996 >> C3500 HD 6.5 F, Standard >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Panel - Gasoline >> Testing >> Coolant Temperature Gauge >> Gauge Indicates Hot All The Time

Gauge Indicates Hot All The Time

  1. Disconnect engine coolant temperature sender connector. Turn ignition on. If temperature gauge indicates cold, replace sending unit.
  2. If temperature gauge does not indicate cold, locate and repair short circuit in Dark Green wire between engine coolant temperature sender connector and instrument cluster connector. If wire is okay, replace temperature gauge.