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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 >> DTC P0461-P0464, P2066, P2067, or P2068: Fuel Level Sensor >> Circuit/System Verification

Circuit/System Verification

  1. Ignition ON, observe the scan tool ECM - Fuel Level Sensor parameters. The reading should be between 0.5-3.5 V and vary with fuel level.
  2. Observe the scan tool Instrument Cluster Fuel Level Sensor parameter. The reading should be 0-100 percent and vary with fuel level.
    • If the reading does not vary with fuel level, refer to Circuit/System Testing.
  3. Command the All Indicators test ON and OFF with the scan tool, verify that the low fuel level indicator turns ON and OFF.
    • If the low fuel level indicator always stays on or always off, replace the P16 Instrument Cluster.
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