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Home >> Chevrolet >> 2022 >> Tahoe SSV >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 9 (Engine Controls And Fuel - 3.0L (Lm2) Diesel - Diagnostic Information And Procedures (2 Of 5)) >> Diagnostic Information and Procedures >> DTC P0300-P0306 >> Circuit/System Testing

Circuit/System Testing

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  1. Ignition/Vehicle - Off
  2. Verify the tool is available: CH-51450-A Oscilloscope Diagnostic Kit & CH-51450-LEAD-A Oscilloscope Basic Lead Kit
    • If the tool is not available 

      Refer to step 4

    • Go to next step: If the tool is available 
  3. Perform the following procedure/test: Relative Engine Compression Test

    Verify the procedure/test passes.

    • Go to next step: If the procedure/test passes 
  4. Verify the following conditions do not exist:
    • Q17 Fuel Injector - Incorrect connection/Leaking/Loose/Visible Damage
    • Fuel - Fill Level = Low
    • Fuel Line (All) - Blocked/Incorrect connection/Kinked/Leaking/Loose/Visible Damage
    • If a condition exists 

      Repair or replace as necessary

    • Go to next step: If no conditions exist 
  5. Perform the following procedure/test: Fuel System Diagnosis
    • If the procedure/test does not pass 

      Repair or replace as necessary

    • Go to next step: If the procedure/test passes 
  6. All OK.