One of my employees is having trouble with his v6 2006 mustang. The a/c or heat doesn't work. No defrost, legs, or full blast. Nothing. He says you can hear it click on but nothing comes out. He took it to a shop and they quoted him 4k because they have to pull the motor.. Another shop told him it was the blower motor which sounds more correct to me.. Any input fellas? Or write ups? I'm not very familiar with these newer mustangs.