How do you reset the security system on a 94 GMC sonoma?

To reset the security system on a 1994 GMC Sonoma, first, ensure that the vehicle is turned off. Then, insert the key into the ignition and turn it to the "On" position without starting the engine. Leave it in this position for about 10 minutes until the security light turns off, then turn the key back to the "Off" position. Finally, attempt to start the vehicle; this should reset the security system.