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Home >> GMC >> 2017 >> Terrain SL, Gas >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Panel System Displays And Gauges >> Diagnostic Information and Procedures >> Instrument Cluster Gauges Inoperative >> Circuit/System Verification

Circuit/System Verification

  1. Verify no DTC is set.
    • If any DTC is set, diagnose this first.
  2. Ignition ON, perform the Instrument Cluster Gauge Sweep test with the scan tool, verify that speedometer and tachometer gauges sweep from their low to high position.
    • If either gauge does not sweep, replace the P16 Instrument Cluster.
  3. Drive the vehicle, verify all gauge values matches the values on the scan tool.
    • If the values do not match, replace the P16 Instrument Cluster.
  4. If gauges do sweep and display the correct value, and the odometer display counts up, replace the K20 Engine Control Module.
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