I’d check the valve and hoses going into the firewall first. Maybe it has failed again. If that isn’t the problem, take the glovebox out and shine a flashlight back to the blend door while turning the temp control all the way down and back up. If the. Lend door doesn’t move, that’s the
so I got the actuator off and the white plate. The white gear sticking out of the actuator falls out freely. The gears in the actuator are not missing teeth but the plate is missing that triangle detent. Could my actuator be good and it’s that’s triangle piece? Should I just replace them both while it is off?