Thank you Marvin Klein. I am having the same issue with my 2006 Grand Prix GXP. GM service document ID: 5355382 (Service Document is PIT5652E) references this issue of GPS not working after battery disconnected. Called GM Customer Service with issue. No way to escalate the issue any higher. Recommend that you take pictures and email them with description of problem and reference the GM document with the navi system option (U3U, U3Z, URB, US4 or YQ4) on your car. In the subject line, use the year / make / model. Email this to nhtsa. Webmaster. Gov Although it falls outside their scope as a driver assistance device or safety issue, they may take a further look at it if they see repeated emails. OH, feature saver was used in the cigarette lighter to keep power, but issue still occurred.
Thursday, September 5th, 2019 AT 4:20 PM