you have to go to the dealer
How to program a keyless entry remote for 2008 Pontiac g5
How to program a keyless entry remote for 2008 pontiac g5
take it to the dealership
how to reset Chevy 2008 hhr keyless remote
how do you program keyless entry remote for 2008 Chevy impala For the LT it's on page 3-48 of the "Owner's Manual", (relearn remote key) done thru the Vehicle Information button of the Driver Information Center...
Replaced the battery in the remote.
To program a 2008 Malibu keyless remote, first, sit in the vehicle and close all doors. Insert the key into the ignition and turn it to the "On" position without starting the engine, then turn it back to "Off." Repeat this sequence twice, ending in the "On" position, and then press the "Lock" and "Unlock" buttons on the remote simultaneously for about 15 seconds. The doors should lock and unlock, indicating successful programming; you can then test the remote to ensure it works properly.
I have 2003 with two remotes and replaced batteries but will not work . How do you program them ?
To program a keyless remote for a 2008 Hyundai Tiburon, first, sit in the driver's seat and close all doors. Insert the key into the ignition and cycle it from "Off" to "On" five times within ten seconds, ending in the "On" position. The doors should lock and unlock to indicate successful entry into programming mode. Finally, press any button on the remote to program it; the doors will lock and unlock again to confirm successful programming. Repeat for additional remotes if needed.
I would try a clock repair shop.
I can't add it
You will not get one remote to work for both of those cars. If you had two cars that use the same style of keyless entry remotes(also called Key FOBs) you could program the two cars to use the same remote.