1999 GMC Suburban

<h1>1999 GMC Suburban – Keyless Remote Fob Programming Instructions</h1> To program a new or replacement keyless entry remote for your 1999 Suburban, follow the procedure below. This method uses the vehicle’s onboard diagnostic system and requires no specialized tools beyond a jumper wire. What You’ll Need A jumper wire (a short wire with stripped ends, preferably fused for safety) Access to the OBDII diagnostic port All remote fobs you plan to program Programming Steps <ul> <li>Step 1: Locate the OBDII Data Link Port You’ll find this port under the dashboard on the driver’s side, near the steering column. The connector has 16 pin positions arranged in two rows. Note that the top row is wider.</li> <li>Step 2: Identify terminal pins 8 and 4 Although the port isn’t labeled, you can use an OBDII diagram for reference. Pin 8 is typically the fourth pin from the left on the top row, and pin 4 is the fourth from the left on the bottom row.</li> <li>Step 3: Use a jumper wire to connect pin 8 to pin 4 Leave the jumper wire in place. Within a few seconds, the vehicle should respond by automatically locking and unlocking the doors, indicating that it has entered programming mode.</li> <li>Step 4: On the first remote, press and hold the LOCK and UNLOCK buttons simultaneously Hold both buttons for approximately 15 seconds. The doors will lock and unlock again to confirm that the remote has been successfully paired.</li> <li>Step 5: Repeat Step 4 for any additional remotes Each additional remote must be programmed within 60 seconds of the last. Repeat the button-holding process on each one.</li> <li>Step 6: Once all remotes have been programmed, remove the jumper wire from the OBDII port This will exit programming mode and finalize the process.</li> <li>Final Step – Test Each Remote Test all remotes by locking and unlocking the vehicle to ensure successful programming.</li> </ul>

1999 GMC Suburban

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