I had it at a dealer and they found nothing wrong, they say.
Buick Q&AAsk Your Question
2006 Buick Lucerne Question: When I reach 80 MPH, a message comes up and says there is an 80 MPH limit?
Answer #1Greg's Orange Auto (12947 Answers) , Orange, CA - (714) 361-9386globalhelper September 19, 2013, 06:00Master
the speed limit is 70mph
Answer #2Todd_A October 29, 2013, 07:00Rookie
I believe you can go into the settings on the dash and change the speed limit setting. Look at the owners manual. I do not remember how. I do remember one thing very well. When you have lazy mechanics and service advisors you will get silly ass answers like the one they gave you.