<h1>1998 GMC Yukon – Remote Fob Programming Instructions</h1> <p><font size="3">This vehicle supports onboard programming through the OBDII Data Link Connector (DLC) located beneath the dashboard. Follow the steps below to program one or more keyless entry remotes.</font></p> <p><font size="3"><b> Programming Procedure</b> </font></p> <ul> <li><font size="3">Step 1: Locate the Data Link Connector (DLC) under the driver’s side dashboard. – The connector is rectangular and wider along the top row. – Identify terminals 8 and 4 (refer to a pinout diagram if needed for accuracy). </font></li> <li><font size="3">Step 2: Verify that there are metal contacts in both terminal 8 and terminal 4. – Use a jumper wire to connect terminal 8 to terminal 4. – Leave the jumper wire in place throughout the programming process. – The door locks will lock and unlock within a few seconds to confirm that the system has entered programming mode. </font></li> <li><font size="3">Step 3: On the first remote, press and hold both the LOCK and UNLOCK buttons at the same time. – After approximately 15 seconds, the vehicle will again lock and unlock the doors, indicating successful programming. – Release the buttons. </font></li> <li><font size="3">Step 4: If you are programming additional remotes, repeat Step 3 for each one within one minute. </font></li> <li><font size="3">Step 5: Remove the jumper wire from the DLC to exit programming mode. </font></li> <li><font size="3">Step 6: Test all programmed remotes to confirm functionality.</font></li> </ul>
