<h1>2021 GMC Terrain — Keyless Entry Remote Fob Programming (Smart Key)</h1> <p><font size="3">This vehicle supports programming of additional remote transmitters with or without recognized remotes. Select the procedure below based on your current situation.</font></p> <p><b><font size="3"> If You Have Two Recognized Transmitters</font></b></p> <p><font size="3"> If two programmed remotes are available, you can add a new one yourself using the following steps: </font></p> <ul> <li><font size="3">Step 1: Remove the cap covering the key lock cylinder on the driver’s door handle. Place both recognized transmitters inside the vehicle’s front cup holder. </font></li> <li><font size="3">Step 2: Use the mechanical key from one transmitter and insert it into the door lock. Turn the key counterclockwise to the unlock position five times within 10 seconds. The Driver Information Center (DIC) will display: “READY FOR REMOTE #2, 3, 4, ETC.” </font></li> <li><font size="3">Step 3: Place the new, unprogrammed transmitter into the front cup holder. </font></li> <li><font size="3">Step 4: Press the ENGINE START/STOP button. Once the new transmitter is recognized, the DIC will prompt that it’s ready for another. </font></li> <li><font size="3">Step 5: Remove the newly programmed transmitter and press either LOCK or UNLOCK to complete pairing. Repeat Steps 3–5 for any additional transmitters. </font></li> <li><font size="3">Step 6: Once all transmitters are programmed, press and hold ENGINE START/STOP for approximately 12 seconds to exit programming mode.</font></li> <li><font size="3"> Step 7: Reinsert the mechanical key into the transmitter. </font></li> </ul> <p><b><font size="3">If You Do Not Have Any Recognized Transmitters</font></b></p> <p><font size="3"> If no working remotes are available, use this 30-minute procedure to program new ones. This feature is not available for vehicles sold in Canada. </font></p> <ul> <li><font size="3">Step 1: Remove the cap covering the key lock cylinder on the driver’s door. Insert the mechanical key and turn it counterclockwise to the unlock position five times within 10 seconds. The DIC will display: “REMOTE LEARN PENDING, PLEASE WAIT.” </font></li> <li><font size="3">Step 2: Wait approximately 10 minutes until the DIC changes to: “PRESS ENGINE START BUTTON TO LEARN.” Press the ENGINE START/STOP button once. </font></li> <li><font size="3">Step 3: Repeat Step 2 two more times (for a total of three 10-minute cycles). After the third time, the DIC will read: “READY FOR REMOTE #1” and all previously paired remotes will be erased. </font></li> <li><font size="3">Step 4: Place the new transmitter into the front cup holder. </font></li> <li><font size="3">Step 5: Press ENGINE START/STOP. Once the transmitter is programmed, the DIC will confirm it’s ready to add another. </font></li> <li><font size="3">Step 6: Remove the transmitter and press LOCK or UNLOCK. Repeat Steps 4–6 for additional remotes. </font></li> <li><font size="3">Step 7: Press and hold ENGINE START/STOP for 12 seconds to exit programming mode. </font></li> <li><font size="3">Step 8: Reinsert the mechanical key into the transmitter.</font></li> </ul>
