Programming Instructions:
Note: This is the same for many GM vehicles.
Sit in the car’s driver’s seat. Insert the key and turn it ON. Push the INFORMATION button on the information center until the display reads PRESS TO RELEARN KEYS. Push the CHECK button. Push and hold LOCK and UNLOCK on the remote. Wait about 15 seconds or so. You’ll hear the horn chirp. The remote is programmed. Repeat for the additional remotes you need to program; you can program up to 8.
pete says
have a 2001 z71 that i bought used.did not come with a remote. i have one that a friend gave me that i would like to program for my truck.can you please help?