Here is what you do. make sure the battery is fully charged cause you dont want it to go dead during this process or it wont work. step down on your parking brake pedal and leave it down. this will keep the headlights off during the process so the battery wont go dead. turn the ignition key like you were going to start the car then leave the key in the on position. you have to leave the key in the on position for ten minutes. during the ten minutes you will see the anti theft or security light flashing or the display in the instrument cluster. when the ten minutes are up the security light will go out. once the light goes out attempt to start the car. if it doesnt start turn the key all the way back to the off position count to three then attempt to start the car then leave the key in the on position another ten minutes till the light stops flashing again. sometimes it takes up to three ten minute cycles to reset the antitheft system. so basically you do the same thing three times leaving the key in the on position for ten minutes each time so it will take approximately thirty minutes. sometimes it will work on the first try though.
you don't. have you had a new key cut ? if so you will need old key to start the engine. if not put your key in the ign. turn the key on and leave on for at least 15 min.the computer will go thru a relearn and if something is wrong you will not be able to start engine but if the relearn fixes the problem drive on.other wise you will need to have the car towed to you local chevy dealership.hope this helps
take the bottom column panle off find the small orange wire it will be with a white one cut the wires and use the two that run back to the fire wall attatch them one on each side of your spare key that has the pellet in it i used black tape car started right up then just leave that key there tape it out of the way