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
Verify there are no other DTCs set, except for DTC P0300-P0308, P0315.
- If any other DTCs are set
  Refer to: Diagnostic Trouble Code (DTC) List - Vehicle
- Go to next step: If no other DTCs are set
Select: Module Diagnostics
Select: Body Control Module
Select: Configuration/Reset Functions
Select: Brake Pedal Position Sensor Learn
Follow the instructions on the scan tool.
Verify the scan tool parameter: Brake Pedal Position Sensor Learn = Yes
- If not the specified state
  Repeat step 6
- Go to next step: If the specified state
Select: Module Diagnostics
Select: Engine Control Module
Select: Configuration/Reset Functions
Select: Learn Functions
Select: Crankshaft Position Variation Learn
Follow the instructions on the scan tool.
Verify the scan tool procedure was successful.
- If the procedure was not successful and first time here
1. Ignition/Vehicle - Off
2. Verify the following conditions do not exist:
- B26 Crankshaft Position Sensor & Reluctor Ring - Foreign material passing between the components/Incorrect air gap
- Battery Voltage - Low
- Crankshaft Bearing - Worn
- Crankshaft - Excessive runout/Visible Damage
- Reluctor Ring - Misaligned/Visible Damage
- Signal circuit @ B26 Crankshaft Position Sensor - Electromagnetic Interference
  - If a condition exists - Repair or replace as necessary
  - If no condition exists - Repeat step 8
- If the procedure was not successful and performed 4 times or less
  Repeat step 12
- If the procedure was not successful and performed 5 times
  Replace the component: K20 Engine Control Module
- Go to next step: If the procedure was successful
All OK.