Except Escalade
1. Raise the rear left seat so that you can access the parking system electronics.
2. Disconnect the connector.
3. Detach the retainer.
4. Remove the electronic block of the parking system.
5. Install in the reverse order of removal.
Escalade
1. Raise the rear left seat to access the suspension control box and ECM.
2. Detach the container fasteners.
3. Remove the container from under the seat.
4. Release the clips and remove the cover (1).
5. Disconnect the connector (1) from the electronic control unit of the parking system (2).
6. Disconnect the fixing clips of the electronic unit.
7. Remove the electronic parking system control unit (2).
8. Install in the reverse order of removal.