With Scan Tool
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.
- Ignition - On / Vehicle - In Service Mode
- Select: Module Diagnostics
- Select: Engine Control Module
- Select: Configuration/Reset Functions
- Select: Reset Functions
- Select: Reductant System Data Reset
- Follow the instructions on the scan tool. - The procedure will complete within 10 s
NOTE:
The scan tool does not display the learn/reset status.