<h1>2004 GMC Yukon Denali Keyless Entry Remote Fob (Smart Key)</h1> <p><font size="3"><b>Important Notice:</b> The 2004 GMC Yukon Denali supports onboard programming for remote fobs. This process does not require any special tools, but it must be followed precisely to ensure proper registration of each remote.</font></p> <p><font size="3"><b> Programming Procedure:</b> </font></p> <ul> <li><font size="3">Step 1: Prepare the Vehicle Interior Ensure that all vehicle doors are fully closed before starting the process. Insert the key into the ignition without starting the engine. </font></li> <li><font size="3">Step 2: Activate Programming Mode Press and hold the UNLOCK button on the driver’s door panel and continue to hold it throughout the next steps. </font></li> <li><font size="3">Step 3: Cycle the Ignition Switch While holding the unlock button: Turn the ignition to the ON position (without cranking the engine). Turn the ignition OFF. Turn the ignition ON again. Turn the ignition OFF again. </font></li> <li><font size="3">Step 4: Enter Programming Mode Release the UNLOCK button. The vehicle will automatically lock and unlock the doors, confirming it has entered programming mode. </font></li> <li><font size="3">Step 5: Program the Remote Fob Press and hold the LOCK and UNLOCK buttons on the remote simultaneously. Hold both buttons for up to 30 seconds until the door locks cycle again, indicating the remote has been successfully programmed. </font></li> <li><font size="3">Step 6: Program Additional Remotes Repeat the previous step for each remote you wish to program. Note: All remotes must be programmed during the same session. Any remotes not included will be erased from the system. </font></li> <li><font size="3">Step 7: Exit Programming Mode Turn the ignition switch to the ON position once more to exit programming mode. </font></li> </ul> <p><b><font size="3">Additional Considerations: </font></b></p> <ul> <li><font size="3">Test Functionality: After programming, confirm that all remotes function correctly, including lock, unlock, and panic buttons. </font></li> <li><font size="3">Battery Condition: If a remote fails to program, ensure the battery is functional and properly seated. </font></li> <li><font size="3">All Remotes Must Be Present: If one remote is reprogrammed, all others must be programmed at the same time or they will no longer function.</font></li> </ul>
