Circuit/System Verification
WARNING: This page is about a different car, the 2020 Buick Regal and 2019 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition - On/Vehicle - In Service Mode
- Operate the component: S3 Transmission Shift Lever = L/M
- Verify the scan tool parameter: Driver Shift Control Mode = Active
- If not the specified state
Refer to: Circuit/System Testing
- Go to next step: If the specified state
- If not the specified state
- Operate the component: S3 Transmission Shift Lever - Forward
Verify the scan tool parameter: Up and Down Shift Switch = Up or Upshift
- If not the specified state
Refer to: Circuit/System Testing
- Go to next step: If the specified state
- If not the specified state
- Press and hold the switch: S3 Transmission Shift Lever - Rearward
Verify the scan tool parameter: Up and Down Shift Switch = Down or Downshift
- If not the specified state
Refer to: Circuit/System Testing
- Go to next step: If the specified state
- If not the specified state
- Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
Verify the DTC does not set.
- If the DTC sets
Refer to: Circuit/System Testing
- Go to next step: If the DTC is not set
- If the DTC sets
- All OK.