<h1>2000 GMC Sonoma – Keyless Remote Fob Programming Procedure</h1> <p><font size="3">This manual programming process allows you to synchronize up to four keyless entry remotes with your 2000 GMC Sonoma. Be sure to complete the process for all remotes during the same session, including existing ones, as any remotes not reprogrammed will be erased from the system. Before You Begin Make sure all vehicle doors are closed and unlocked. Have all remotes you wish to program ready.</font></p> <p><font size="3"><b> Programming Instructions</b> </font></p> <ul> <li><font size="3">Step 1: Prepare the Vehicle Ensure all doors are shut. Insert the ignition key into the ignition cylinder, but do not turn it yet. </font></li> <li><font size="3">Step 2: Hold the Unlock Button Locate the power UNLOCK button on the driver’s side door panel. Press and hold down this button. Keep it held through the next steps. Step 3–6: Cycle the Ignition Switch While continuing to hold the unlock button, perform the following four ignition steps quickly: </font></li> <li><font size="3">Step 3: Turn the key to the ON position (do not start the engine). </font></li> <li><font size="3">Step 4: Turn it back to the OFF position. </font></li> <li><font size="3">Step 5: Again, turn it to the ON position. </font></li> <li><font size="3">Step 6: Finally, return it to the OFF position. </font></li> <li><font size="3">Step 7: Enter Programming Mode Now release the unlock button. If successful, the door locks will automatically lock and unlock, confirming the system has entered programming mode. If the locks do not cycle, repeat the entire process from Step 1. </font></li> <li><font size="3">Step 8: Program the First Remote On your first remote, press and hold both the LOCK and UNLOCK buttons simultaneously. Continue holding both buttons for up to 30 seconds until the door locks cycle again. This indicates the remote was successfully paired. </font></li> <li><font size="3">Step 9: Program Additional Remotes Repeat Step 8 for each additional remote, including any existing ones. All remotes must be programmed during this single session. </font></li> <li><font size="3">Step 10: Exit Programming Mode Turn the ignition switch to the ON position to exit the programming sequence. Then remove the key from the ignition. </font></li> <li><font size="3">Step 11: Test All Remotes Test every remote to ensure that both the lock and unlock functions work properly.</font></li> </ul>
