I know there is some sort of code put in by pressing on the brakes, and turning the key or something to change the way the doors lock when moving, or how to unlock the rear, and passenger windows. Does anyone know this stuff off the top of their head? If so, please spread the knowledge.
Does anyone know how to unlock or change the lock code for the windows in a 1997 GMC Yukon?
Turn the ignition key two clicks forward. Step on the brake pedal three times (not too fast) and turn the key off. Turn the key back on and start the truck. That should reset the security codes.
