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Home >> Buick >> 2012 >> Verano >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Panel System Displays And Gauges >> Diagnostic Information and Procedures >> Fuel Gauge Malfunction >> Circuit/System Verification

Circuit/System Verification

  1. Ignition ON, perform the Instrument Cluster Gauge Sweep test with the scan tool, verify that the fuel level gauge sweeps from its low to high position.
    • If the fuel level gauge does not sweep, replace the P16 instrument cluster.
  2. 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 does not turn ON or OFF as commanded, replace the P16 instrument cluster.
  3. Observe the scan tool ECM Fuel Level Sensor parameter. The reading should be 0.5-3.5 V and vary with fuel level.
    • If the reading does not vary with fuel level, refer to DTC P0461-P0464 .
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