2008 GM SUBURBAN 1500 2500 LT LTZ SPORT UTILITY NAVIGATION GPS MAP DISC CD DVD
This is purely due to normal usage. only 2007 2008 2009 2010 2011 Chevrolet Avalanche, Suburban, Silverado, and Tahoe (all models). Part Number:GM # 20861673. Here are the disc specs Map covers USA & Canada.