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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1645 (Engine Control System & Fuel System - 4.8L, 5.3L, 6.0L, 6.2L - DTC P0300 To DTC P1175) >> DTC P0300-P0308 (Without Heavy Duty L96) >> Repair Verification

Repair Verification

WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install any components that have been removed or replaced during diagnosis.
  2. Clear the DTCs.
  3. Turn OFF the ignition for 60 seconds.
  4. If the repair was related to a DTC, duplicate the Conditions for Running the DTC and use the Freeze Frame/Failure Records, if applicable, in order to verify the DTC does not reset. If the DTC resets or another DTC is present, refer to the Diagnostic Trouble Code (DTC) List - Vehicle and perform the appropriate diagnostic procedure.
  5. To verify that the performance of the catalytic converter has not been affected by the condition that set this DTC, perform the Repair Verification for DTCs P0420 and P0430. Refer to DTC P0420 or P0430 .
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