Product Description: Specification: FCC ID:LHJ011 Part Number: # 21997127, 15132197 #1, 15132198 #2, 10377295, 22730827, 15186203, 15186200 #1, 15186201 #2. Type:3 Button Remote Frequency:315 Mhz Compatible Vehicles: 2003-2006 Cadillac Escalade 2003-2006 Chevy Tahoe 2003-2006 Chevy Avalanche 2003-2006 Chevy Silverado 2003-2006 Chevy Suburban 2007 Chevy Silverado Classic Body Style 2003-2006 GMC Sierra 2003-2006 GMC Yukon 2003-2007 H ummer H2 Programming : Press each button on the remote 26 times (lock x 26, unlock x 26, horn x26) then attempt the steps outlined below 1. Close all doors on the vehicle. 2. Then insert key into the ignition. 3. Press and hold the power UNLOCK button on driver’s side door panel. Do not release until instructed to do so in step 5. 4. Quickly turn the ignition ON, OFF, ON, OFF. (ON is the position just before of starting your vehicle, OFF is the position whereyou can pull your key out of the ignition) 5. Release the power unlock button on the driver’s side door panel. The vehicle should respond by locking and unlocking automatically. 6. Hold the LOCK and UNLOCK buttons on the remote at the same time until door locks cycle again. This could take up to 30 seconds. 7. NOW repeat step 6. for all additional remotes including working ones. 8. TURN ignition to ON to exit programming mode. 9. Turn ignition OFF, remove key and test all remotes to make sure that they are all properly programmed. Package Content: 2 x Remote car key