I have a 2007 GMC YUKON XL, with OnStar Service. I NOW have ONE Remote and One Original Transponder key.........I have misplaced my 2nd set of keys!!!....... I am going to buy a DUPLICATE Transponder Key from my local Lock Smith, who will cut it to match the origial one. I don't need another (2nd) remote---- I think I can get along with just one. He has the blank Transponder key in stock. "At age 77, my daughter says I'm allowed to screw-up once in a while." HaHA.
Neither he nor I know how to "program" this new duplicate key.
Can someone please advise me what has to be done to be able to use this 2nd (duplicate) key.
This lock smith will do it for $31.00 the local dealer wants twice that amount.
Thanks for your help.
Edit: The $31.00 is for the key, cutting it and programing it.