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Home >> Chevrolet >> 2020 >> Express 2500 LS, 6.0L Eng VIN G >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 21 (Engine Controls And Fuel - 4.3L (LV1) - Diagnostic Information And Procedures (2 Of 2)) >> Diagnostic Information and Procedures >> DTC P1248-P124D >> Component Testing

Component Testing

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  1. Ignition/Vehicle - Off
  2. Disconnect the electrical connector : Q17 Fuel Injector
    3. NOTE:

    The specified resistances are valid for components at room temperature.

  3. Test for 1 to 3 ohms between the test points : Control circuit terminal 2 & Control circuit terminal 1
    • If not between 1 and 3 ohms 

      Replace the component : Q17 Fuel Injector

    • Go to next step : If between 1 and 3 ohms 
  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 : Q17 Fuel Injector

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