PAC NU-GM4 NAVIGATION UNLOCK INTERFACE (FOR THE 2012 CHEVROLET(R) AVALANCHE SILVERADO SUBURBAN & NAVIGATION UNLOCK INTERFACE ALLOWS FACTORY NAVIGATION FEATURES OF RADIO OR REVERSE CAMERA TO BE USED BY PASSENGER AT ANY TIME FOR THE 2012 CHEVROLET(R) AVALANCHE&#44; SILVERADO&#44; SUBURBAN & TAHOE & GMC(R) YUKON & SIERRAUPC Package Quantity: 1 Excellent Quality.