Please watch the video below to see how easy it is to program those remotes. Application:
2004, 2005, 2006 and 2007 Buick Rainier keyless remotes

To purchase, buy a remote for your Buick Rainier please click on this link to our website – www.carandtruckremotes.com
1- Close all the vehicle doors.
2- Insert the key into the ignition cylinder (do not turn on).
3- Press and hold the door unlock switch on door panel.
4- While holding the door lock switch in the unlock position, cycle
the ignition ON, OFF, ON, OFF.
5- Release the door unlock switch. The doors will lock and unlock
to confirm the program mode.
6- Press and hold the LOCK and UNLOCK button simultaneously on one
transmitter. After a delay of approx. 15 seconds, the doors will
lock and unlock to confirm the programming of that transmitter.
7- Repeat the previous step to program up to 4 transmitters.
8- Turn the ignition switch to the RUN position in order to exit
the keyless entry transmitter program mode.
9- Operate the transmitter(s) functions to verify proper operation.
To order a remote or to learn more about this product, please click on the link below:
https://www.carandtruckremotes.com/buick-remotes-rainier-remotes.html