I have an 05 LC, i have the valet key and an original key that was not used for a long time. i replaced the battery in the Key with the buttons it worked immediately to unlock the doors after i put a new battery in it but will not start the truck. All i have is the valet key that works as of now. I have tried techstream but needs the immobilizer code. i have tried to deleted the previous keys but will not let me without them in hand. Any tips on how to get the immobilizer code or keys deleted?