[richtazz]

IF your key has a resistor in it, it could be a dirty key is causing teh security module to not recognize the key. Try cleaning the metal strip in the resistor with a pencil eraser to remove oily residue to see if it fixes it. If the relay is sticking, it's a Delco part # 15-8719 and is located in the underhood relay center. Another suggestion is to unbolt the relay center and carefully check the underside for corrosion of the terminals. Since it's mounted under the hood, corrosion is a fairly common problem, especially high mileage and cars in areas where salt is used on the roads in winter.