Lane Departure Warning

What I found is it is not standard back then but an option. A lot of people found it annoying. But just as many like it.

The person you're cutting off will sound their horn or you may collide . That's your warning to pay the f@(k attention

Thank you for the smartest answer that is not what I was looking for I need to know the actual equipment on this vehicle.

Then you need the exact model and series then you can look it up on the Buick website or if it is at a dealer then they can do it for you.

You can get an RPO sheet from the dealer if you give them the VIN and are willing to do it for you , it has codes for every option on that vehicle