Deleting old Key fobs

[hmcnavarro]

Hello all!  I just bought a 2017 Yukon XL Denali and I am loving it.  My last Yukon XL was 2001 that I got in '03 and I held on to it for 10 years.  I am glad to in the big 'Ol Yukon again.  The dealer only gave me one key, I just bought a new one online and had no problems programming it. Although it programmed the key as #3.  Which got me to thinking, how can I tell if the old key is #1 or #2 and how can I delete them all and start over so that there is isn't a working key floating around somewhere?

 

Thank you all

[ullose272]

Probably have to go to the dealer.we used to have to use the tech 2 to delete

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[tbarn]

You will have to go to (pay) the dealer to delete. If I remember, they would need to delete all and start over with available fobs.