I am assuming the car is showing a totally different usage/milage?
there is a website that has access to Volt usage data and they might be of help
http://www.voltstats.net/ELR
they "pull" OnStar so if your account shows correct and caddy dot com does NOT ETC
there is a website that has access to Volt usage data and they might be of help
http://www.voltstats.net/ELR
they "pull" OnStar so if your account shows correct and caddy dot com does NOT ETC