Norton94

Whenever I start the truck up or shut it off I get this clicking noise which is coming from the right side. It sounds like it could be coming from behind the glove box, but im unsure where to exactly pinpoint it. The only thing I can come up with it must be an actuator gone bad. I spoke to a technician at Firestone and he said to mess with the A/C and see when it makes the noise, but it only does it when the truck is started or shut off. Any ideas what it could be would be awesome! Thanks!