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Home >> GMC >> 2021 >> Yukon AT4 >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Displays And Gauges >> Diagnostic Information and Procedures >> DTC P0461-P0464 >> Circuit/System Verification

Circuit/System Verification

  1. Ignition ON.
  2. Verify the DTC P0461, P0462, P0463, or P0464 are not set
    • If DTC P0461, P0462, P0463, or P0464 are set 

      Refer to Circuit/System Testing

    • Go to next step: If DTC P0461, P0462, P0463, or P0464 are not set 
  3. If equipped, verify the mechanical fuel level gauge sweeps during Ignition Instrument Panel Cluster initialization.
    • If the fuel level gauge does not sweep 

      Replace the P16 Instrument Panel Cluster Control Module.

    • Go to next step: If the fuel level gauge sweeps 
  4. Ignition ON, Verify the low fuel level indicator turns ON and OFF during Instrument Panel Cluster initialization bulb check.
    • If the low fuel level indicator does not turn ON and OFF 

      Replace the P16 Instrument Panel Cluster Control Module

    • Go to next step: If the low fuel level indicator turns ON and OFF 
  5. Verify the scan tool Fuel Level Sensor parameter is between 5 - 95% and varies with fuel level.
    • If not between 5 - 95% or does not vary with fuel level 

      Refer to Circuit/System Testing

    • Go to next step: If between 5 - 95% and varies with fuel level 
  6. All OK.
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