<h1>2012 GMC Terrain Keyless Entry Remote Fob (Smart Key)</h1> <p><font size="3"><b>When No Keys Are Available (Flip Key or Standard Key)</b> </font></p> <p><font size="3">If all keys have been lost or none are operational, the vehicle must be programmed using specialized equipment. </font></p> <ul> <li><font size="3">Step 1: Take or transport the vehicle to a professional who has the tools required for programming. </font></li> <li><font size="3">Step 2: The technician will connect to the vehicle's system with a diagnostic interface to program the new key or remote. </font></li> </ul> <p><font size="3"><b>Important:</b> There is no manual or on-board method to complete this if you do not have at least one functioning key. </font></p> <p><font size="3"><b>Adding a New Key with One Programmed Key Present</b></font></p> <p><font size="3"> If you already have one working key and want to add another, follow the steps below: </font></p> <ul> <li><font size="3">Step 1: Insert the currently programmed key into the ignition and turn it to the ON/RUN position. </font></li> <li><font size="3">Step 2: Switch the ignition to OFF, then remove the key. </font></li> <li><font size="3">Step 3: Within five seconds, insert the new key and turn it to the ON/RUN position. </font></li> <li><font size="3">Step 4: Wait for the security indicator light to turn off—this confirms that the new key has been programmed successfully. </font></li> <li><font size="3">Step 5: Repeat steps 1–4 to program any additional keys.</font></li> </ul>
