I brought a new battery for my 2001 buick park avenue, as suggested to bring back the digital reading for mileage, and the mileage info has not returned.
It was suggested that I purchase a new battery to get the mileage info to work on my 2002 buick park auenue. I have a new battery in place and the reading has not returned.
A new battery won't help in this instance, but a least you have a new one you don't have to worry about for some time...It's a common problem with these cars, It's caused by a faulty instrument gauge cluster electrical board. Either you can repair it or replace it. Here is a video describing the issue and fix. HTH's.....http://www.youtube.com/watch?v=_yZl_QoLdtw
It could be just dirty connectors on the cluster. Take it out and take of the board. Clean connections
Search Buick Park Avenue Questions
Are you a UK consumer? CarGurus now has a discussion forum in the UK.
Buick Park Avenue Experts