When to Perform the Procedure
WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.
The injector flow rate programming must be performed if one or more of the following components have been replaced:
- K20 Engine Control Module
- Q17 Fuel Injector