2003 - 2004 - 2005 Various Chevy & GMC Truck Radio AM FM CD Player OEM Radio Upgraded with Bluetooth Music Capability to stream audio from a smartphone, tablet or Bluetooth capable music device! Part Number: 15138488 Compatible Part Numbers: 10357894 / 15104155 / 15184932 / 15198700 / 15756188. This radio will need to be unlocked by a dealer and paired to your truck. Please see below for more details. Please confirm that this is the radio your vehicle requires as some of the vehicles used more than one style of radio. This part number came factory in various Chevy & GMC full size trucks. Feel free to give the seller a call with compatibility questions. The Bluetooth upgrade is simple to operate! Just pair the device, press the Bluetooth button and play your music or most in-app audio, including iTunes, Rhapsody, Pandora, Spotify, YouTube, Netflix and many, many more will play in full, crisp, clean quality while taking advantage of all sound controls on the radio. The button will even light up blue when activated! To complete paring, some devices require a pass key or code which is "0000". Please note that this will not work with phone calls as phone manufacturers have designed calls to work with Bluetooth mic systems only. When you do not want to listen to Bluetooth music, simply unpair or turn off your device's Bluetooth. Please Note: This radio will need to be unlocked upon installation in your vehicle. It can be put into a fully functioning test mode for 10 minutes at a time but will need to be taken to a dealer for permanent pairing. This generally costs around $50 but will sometimes be done for free if you have a relationship with the dealer as it is a 5 minute process. Please make arrangements before purchase.