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Fuel Injection Pump TDC Offset Adjustment: Notes

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2002 GMC Savana Special, 2002 GMC Savana Camper Special, 2002 GMC Savana, 2002 Chevrolet RV Cutaway, and 2002 Chevrolet Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Required Tools: Injection Pump Wrench (J-41711) and Injection Pump Adjustment Tool (J-29872-A).
NOTE: These procedures should only be used when a DTC has directed you to or one of the following repairs has been performed.
  • A DTC 1214 is set.
  • The CKP sensor has been replaced.
  • The engine has been replaced.
  • The front engine cover has been replaced.
  • The PCM and the injection pump have been replaced.
The PCM has the ability to perform a top dead center (TDC) offset learn when one is not present or has been cleared. This procedure allows the PCM to be updated with the correct TDC offset for the vehicle.
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