There is an air temperature actuator on the right-hand side of the heater/vent module on top. Start by removing the instrument panel carrier, disconnecting the electric connector and removing the retaining screws on the air temperature actuator. Remove the actuator from the heater/vent module and install a new actuator making sure that the actuator is seated on the locating tab, insert the retaining screws and fasten it in position to 1.9 n.m (17 lb ft). Restore the electrical connector and install the instrument panel carrier back. To activate the air temperature actuator of vehicles with automatic climate control (C68), the ignition switch should be turned elsewhere to off, then removed the Fuse rdo batt for 10 sec, restore the Fuse and ignite the ignition switch on to make sure the actuator runs in hot and cold phase. Lastly, do a heater output temperature check.