![]() ![]() 2008 model year vehicles are NOT eligible for free annual updates however, a navigation DVD update disc can be purchased for $199 (USD) + shipping. The DVD Navigation Update Program policy has changed for the 2008 model year. All navigation systems utilize the DVD disc for map and points of interest data. As the data ages, the functionality of the navigation system declines. The data on the DVD map disc ages at a rate of 15-20% per year. ![]() Offering GM customers new navigation DVDs will ensure that the customers have the latest information for their system. To improve customer satisfaction with factory-installed DVD Navigation Systems, General Motors offers a Navigation Disc Update Program for 20 model year vehicles.
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