Proximity Key

[Feastersss]

Help needed....I purchased an '18 Yukon Denali and it only had 1 key fob, so I purchased a key from someone that was programmed to a '15 Yukon, but never used, I installed a new battery, went thru the 30 relearn process and wasnt able to learn the purchased key to my Yukon & now I'm getting a message on the DIC " SERVICE THEFT DETERRENT SYSTEM", but everything works as it should other than the purchased key.  I'm frustrated now, I've tried the 30 minute programming a couple times and continue to get the same issue!  Thanks in advance for any help!

Scott

[Feastersss]

7 hours ago, Feastersss said:

Help needed....I purchased an '18 Yukon Denali and it only had 1 key fob, so I purchased a key from someone that was programmed to a '15 Yukon, but never used, I installed a new battery, went thru the 30 relearn process and wasnt able to learn the purchased key to my Yukon & now I'm getting a message on the DIC " SERVICE THEFT DETERRENT SYSTEM", but everything works as it should other than the purchased key.  I'm frustrated now, I've tried the 30 minute programming a couple times and continue to get the same issue!  Thanks in advance for any help!

Scott

I went back out to the garage thinking maybe I'd give it another shot, opened the driver side door and the DIC read 'Action Required" Ready for Remote #2 and the battery was almost, had to put my jump it on to start it!