Chevy Cobalt & Pursuit Radio AM FM CD Player Upgraded with Aux Input (3.5 mm jack) for use with iPhone, iPod, Android, mp3 Players, Satellite Radio & More! Chrome knob version, upgraded and fully serviced. UN0 Option Code. This radio needs to be unlocked, but can be put into a fully functioning test mode prior to visiting the dealer. This unit is a genuine OEM 2005-2006 Chevy Cobalt and Pursuit, option code UN0, AM FM CD Player with Chrome knobs, that has been professionally remanufactured and upgraded with a 3.5 mm aux input in the face for use with iPhone, iPod, Android, mp3 Players, Satellite Radio & More. Part Numbers: 15851728, 15851729, 15235437, 15238171, 15238172, 15254010, 15254011, 15272189, 15272190, 15278465, 15851728, 15851729, 22712714, 22712715, 22737126. Please contact seller with fitment or function questions.