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Home >> Chevrolet >> 2018 >> Suburban 3500 HD LT >> Repair and Diagnosis >> External Pages >> Different car >> Section 2 (Engine Controls And Fuel - 5.3L (L83) Or 6.2L (L86) - DTC P0010 To DTC P0442) >> Diagnostic Information And Procedures >> DTC P0089, P00C6, P228C, P228D, P2C1E, P2C1F, P2C20: Fuel Pressure Regulator >> Component Testing

Component Testing

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2018 GMC Yukon XL, 2018 GMC Yukon, 2018 Chevrolet Tahoe, 2018 Chevrolet Suburban, and 2018 Cadillac Escalade ESV. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition/Vehicle - Off
    NOTE: As little as 2 Ω of resistance in a circuit may cause a DTC to set.
  2. Disconnect the electrical connector : G18 High Pressure Fuel Pump
  3. Test for 9 to 11 Ω between the test points : Control terminal 1 & Control terminal 2
    • If not between 9 and 11 Ω 

      Replace the component : G18 High Pressure Fuel Pump

    • Go to next step : If between 9 and 11 Ω 
  4. Test for infinite resistance between the test points : Each terminal of the component & The component's housing
    • If less than infinite resistance 

      Replace the component : G18 High Pressure Fuel Pump

    • Go to next step : If infinite resistance 
  5. All OK.
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