Circuit/System Verification
WARNING: This page is about a different car, the 2022 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition ON/Vehicle In Service Mode.
- Verify DTC U197C is not set.
- If DTC is set
- Perform all necessary programming and learn procedures for the K56 Serial Data Gateway Module.
- Verify the DTC does not set.
- If the DTC sets, replace the K56 Serial Data Gateway Module.
- Go to next step: If the DTC does not set
- All OK.
- Go to next step: If DTC is not set
- All OK