jdzimardo

Thought this would be best location to add. Recently purchased for son, 1999 GT Limited. Very irregular strong clicking sound from under dash. can make it stop by changing HVAC mode. Can even slap top of dash. Searches have suggested Mode motor, actuator arm. Very infrequent. Can be running with Def on and all of a sudden it starts. Each mode of HVAC works but can seem slow to change. Motor or arm, or something else. Looking for thoughts. Thanks.