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Home >> GMC >> 1982 >> Magnavan Standard Trans >> Repair and Diagnosis (Single Page) >> Electrical >> Motors, Switches, Relays >> Switches & Instrument Panels >> Testing & Trouble Shooting >> Temperature Gauge

Temperature Gauge

  1. Disconnect temperature gauge sender wire in rear compartment and connect tester (J-24538-A) to sender and ground. Turn ignition "ON". If gauge responds to tester accurately, replace sender. If gauge does not respond, go to step 2).  If gauge responds but not accurately, go to step 4). 
  2. Disconnect temperature gauge lead at wiring harness connector. Connect the tester to lead that goes to gauge. If gauge responds accurately, check wiring between sender connections and engine harness connector. If gauge does not respond, go to step 3). 
  3. Remove gauge. Check for bad connections at gauge terminals or instrument cluster connector. If connections are good, replace gauge. If bad, repair connections and reinstall gauge.
  4. Remove gauge and check for loose nuts at gauge terminals or lack of ground connection to gauge. If connections are bad, repair connections and reinstall gauge. If connections are good, replace gauge.
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