<h1>1999 GMC Yukon Denali – Keyless Entry Remote Fob Programming Instructions</h1> <p><font size="3">This model supports onboard programming using the Data Link Connector (DLC) located beneath the dashboard. Follow the steps below carefully. </font></p> <p><font size="3"><b>Programming Steps</b> </font></p> <ul> <li><font size="3">Step 1: Locate the Data Link Connector (DLC) under the driver’s side of the dashboard. – The DLC is shaped like a trapezoid and wider at the top. – Identify terminal 8 (top row, second from the right) and terminal 4 (bottom row, fourth from the left). Refer to a diagram if needed.</font></li> <li><font size="3"> Step 2: Ensure that both terminal 8 and terminal 4 have metal contact pins. </font></li> <li><font size="3">Step 3: Insert a jumper wire between terminals 8 and 4. – Leave the jumper wire in place throughout the procedure. – The vehicle will cycle the door locks (lock and unlock) to indicate it has entered programming mode. </font></li> <li><font size="3">Step 4: Press and hold the LOCK and UNLOCK buttons simultaneously on the first remote you want to program. – Hold both buttons for approximately 15 seconds until the door locks cycle again, confirming successful programming. </font></li> <li><font size="3">Step 5: Within one minute, repeat Step 4 for any additional remotes you wish to program.</font></li> <li><font size="3"> Step 6: Once all remotes are programmed, remove the jumper wire from the Data Link Connector. </font></li> <li><font size="3">Step 7: Test each remote to verify that lock and unlock functions operate correctly.</font></li> </ul>
