<h1>2024 GMC Sierra HD — Smart Key Remote Fob Programming Instructions</h1> <p><font size="3">For the 2024 GMC Sierra HD equipped with a smart key system, remote programming must be completed using specialized diagnostic equipment. This procedure cannot be performed manually through onboard steps.</font></p> <p><font size="3"><b> Smart Key Programming Procedure (Non-Onboard Programmable)</b> </font></p> <ul> <li><font size="3">Step 1: Ensure the vehicle is in a secure, accessible location and the battery is fully charged. All doors should be closed during programming. </font></li> <li><font size="3">Step 2: Obtain all remote fobs that you wish to program, including any currently functional units. All remotes must be reprogrammed during the same session. </font></li> <li><font size="3">Step 3: Using dealership-grade or equivalent diagnostic tools, connect to the vehicle’s onboard computer system through the OBD-II port, located beneath the dashboard on the driver’s side. </font></li> <li><font size="3">Step 4: Follow the tool-specific prompts to access the vehicle’s keyless entry programming menu. Enter the appropriate vehicle year, make, and model to begin the programming process. </font></li> <li><font size="3">Step 5: When prompted by the tool, press the LOCK and UNLOCK buttons on the smart key remote simultaneously. Hold the buttons until confirmation appears on the diagnostic screen. </font></li> <li><font size="3">Step 6: Repeat the process for each additional remote. Most systems allow a maximum of up to eight transmitters. </font></li> <li><font size="3">Step 7: Once all desired remotes have been successfully registered, save the configuration and exit the programming menu. </font></li> <li><font size="3">Step 8: Test each remote to confirm that lock, unlock, and remote start (if equipped) functions operate correctly.</font></li> </ul>
