Must be programmed by a GM dealer.
You have to program it with a DRB (Scan tool).
How do i you program keyless remote for a 2004 malibu?
how can i program a remote for a 04 kia spectra
Dealership
To program a keyless remote for a 2004 Pontiac Grand Prix, start by sitting in the driver's seat with all doors closed. Insert the key into the ignition and turn it to the "On" position without starting the engine, then back to "Off" twice, ending in "On." Press the lock button on the remote; the doors should lock and unlock, indicating successful programming. If you have additional remotes to program, repeat the lock button step for each one before turning the ignition back to the "Off" position.
the batterys are dead in the remote or in the car.
the dealer does it with a scan tool
I had the same problem. Google "keyless entry remote 2003 Jeep Grand Cherokee".
That requires the dealer's scan tool.
I found an Internet site which says how to program the keyless entry remote. But there is an error: this procedure is good for Elantra 2001 to 2003. Elantra 2004 must be programmed by the dealer. http://car.justanswer.com/hyundai/n1kw-program-remote-entry-hyundai-2004
Mostly at the dealer for the factory remotes
Possible weak battery in the remote.