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Home >> Chevrolet >> 2024 >> Tahoe Commercial, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 9 (Engine Controls And Fuel - 3.0L (Lm2) Diesel - Diagnostic Information And Procedures (3 Of 5)) >> Diagnostic Information and Procedures >> DTC P0506 or P0507 >> Circuit/System Testing

Circuit/System Testing

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P0506

  1. Verify the following conditions do not exist:
    • Exhaust System - Restricted
    • Mechanical Condition - Engine Speed = Limited
    • Engine - Parasitic Load
    • If a condition exists 

      Repair as necessary

    • Go to next step: If no conditions exist 
  2. All OK.

P0507

  1. Verify the following conditions do not exist:
    • Fuel Injector - Leaking
    • Engine Oil - Contamination/Fuel
    • Aftermarket equipment/accessories: Fuel System
    • If a condition exists 

      Repair as necessary

    • Go to next step: If no conditions exist 
  2. All OK.
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