The Dealer told me that they charge 600.00 to install card and program. Card part # 84489271 is an active part number, the service tech after talking to shop tech and GM told me if I buy the card it is pretty much plug and play. But others say this is not true the dealer must set up or person with Tech membership or MDI. I am left confused by all the double talk.
The kit # 84489271 comes with card and book with instructions as well as code number for GM assistant?