1. Disconnect the ground cable from battery.
2. Remove the rear gate trim. 
3. Remove the rear garnish assembly.
4. Disconnect the rear lock button connector.
5. Remove the two screws, and remove the rear lock button from the rear garnish assembly.
SECURITY AND LOCKS > Rear Lock Button
1. Disconnect the ground cable from battery.
2. Remove the rear gate trim.
3. Remove the rear garnish assembly.
4. Disconnect the rear lock button connector.
5. Remove the two screws, and remove the rear lock button from the rear garnish assembly.