Had my local garage replace a TPMS that I supplied when I had my tires changed over as it was leaking air. I picked it up after hours and noticed when I started the truck the sensor was reading only 8 pds. I checked the tire pressure and it was at 35pds. I figured the sensor would adjust so I drove home. Next morning when I started up, I got a "Service TPMS" message, and that sensor was blank. So I'm thinking either the garage damaged it when they were installing it (although they have done two others for me in the past), or its a faulty sensor. Any opinions?

D.