This Axxess GM OnStar harness appears to be previously installed. It looks complete with all the harnesses (please look at all the pictures), but is missing the installation manual. It will come with everything pictured. Due to the nature of this harness interface, it is untested and being sold as is. This item is from a large electronics chain store. We buy our stuff from this store in bulk usually ranging from overstock, packaging damage to customer returns. The pictures on this listing are of the item you will receive, there are no stock photo"s used. If you have any questions or concerns please don"t hesitate to let me know. Here are the specifications and information on this item: This Metra LC-GMRC-CL interface retains your vehicle"s warning chimes after the amplified or non-amplified sound system has been removed or replaced. The compact design allows easy integration into your vehicle. Product Features Compatible with select vehicles Including Buick, Cadillac, Chevrolet, GMC, Hummer, Isuzu, Oldsmobile, Pontiac, Saab, Saturn and Suzuki models for a precise fit. Retains warning chimesTo enable continued operation after your vehicle"s amplified or non-amplified sound system has been removed or replaced. Also retains R.A.P. (Retained Accessory Power) in equipped vehicles. Compact design Allows easy integration into your vehicle. USB connectivity Allows you to update the interface. Provides 12V accessory output For use with 12V devices. Specifications Height 2.25 inches Width 3.5 inches Depth 9.25 inches Weight 0.48 pounds Vehicle Compatibility GM 2000-UP Function(s) Retained Chimes USB Port(s) Yes Wireless No UPC 086429253807