Bought new keyless remote for my 06 buick lacross. need to know how to program it.

2006 Buick Rendezvous Remote Programming For Buick Rendezvous / Intrigue / AztekObtain all remote transmitters for this vehicle.
1. Close all doors.
2. Press and hold the Unlock button on door lock switch on drivers door.
Hold until instructed to release in step 6.
3. Insert key into the ignition cylinder but do not turn it.
4. Remove key from ignition and then insert key into ignition without turning ignition cylinder and remove key.
5. Insert key in ignition a third time and leave key in ignition. Do Not turn ignition.
6. Release door lock switch on drivers door panel. A Chime will sound 3 times indicating that you are in programming mode.
7. Press both the Lock and Unlock buttons on the remote up to 30 seconds.
A chime will sound 2 times if remote has programmed successful.
8. Repeat step 7 if you are programming additional remotes.
9. Remove key from ignition to exit programming mode

You might try this:

http://blog.carandtruckremotes.com/2014/09/11/how-to-program-buick-lucerne-keyless-entry-remote-fob/

But if it does not work you will need to see if there is a local locksmith that can assist you.

I have a keyless fob and am getting the same message. Any ideas how to get the message to turn off?

I own a 2007 Buick Lacrosse, but I imported it to Paraguay, South America. Now I bought a new Engine Start Keyless Entry Remote from Amazon, but here we do not have any GM dealer to program the unit.
I really need help to program the keyless remote control, I will appreciate very much your help.

On my cars this has always been a remote battery replacement issue, weak battery equals weak signal causes short range. However you say you bought new remotes and they must have had new batteries in them. Did someone put some metal foil shielding around the receiver?I think this would have to be some type of bad receiver issue.

Transmitter ProgrammingImportant: All transmitters which are to be recognized by the remote control door lock receiver (RCDLR) must be programmed in a single programming sequence. If the system is placed in program mode it will erase all previously programmed transmitters upon the receipt of the programming signal from the first transmitter. Up to 4 transmitters can be programmed. Do not operate or program the transmitters in the vicinity of other vehicles that are in the keyless entry program mode. This prevents the programming of the transmitters to the incorrect vehicle.

1. Install a scan tool.
2. Use the scan tool in order to access programming: Vehicle Control System/Computer Integrating System/Module Setup/BCM/Program Key Fobs.
3. Press the START soft key on the scan tool. Important: The scan tool must stay connected until all of the transmitters are programmed.
   
4. Press and hold the LOCK button and the UNLOCK button simultaneously on one transmitter. After a delay of 5-10 seconds, the scan tool will indicate that the transmitter is programmed.
5. Repeat the previous step in order to program up to 4 transmitters.
6. Remove the scan tool.
7. Operate the transmitter functions in order to verify correct system operation.

Good luck

only a dealer or someone with a tech 2 and a cadi module

Both my remotes no longer work. I will be ordering new ones off Ebay and having my dealer program them. New ones from Buick are very pricey.

Take the remote out to the car. Point it at the front of the car and push and hold the top two buttons until your car horn sounds three times