I have a 2003 Silverado with some 1 off security system in it. I have had 2 dealers service departments check it out and nobody has ever ran across one of these.It’s a card that swipes across a reader on the lower dash.I had 2 of these swipe cards when I bought the car from the second owner but 1 card quit reading so I’m down to 1 and nervous. Has anyone come across this system before?