I've had very good luck with this Ebay seller;
http://stores.ebay.com/mykeyless
Dependable seller who includes programming instructions.
The fob has a pry slot and prys apart.
at the Saturn dealer. or a decent auto locksmith
To add a new key fob, take the vehicle and the key fob to an authorized dealer. To re-program a key fob after replacing it's battery, open the key fob, then read and follow the instructions inside.
The key fob unlock button disengages the theft deterrent system. If you have lost both key fobs, have the vehicle towed to a dealer that's working on Saturn's and have a new key fob programmed to the vehicle.
Use the key fob
The key fob can only be programmed at the dealer.
The button on the key fob generally does that for you.
Lock and unlock the doors with your key or use the key fob to do the same.
The "unlock" button on your key fob.
You cannot use any remote key for a 2002 Chevy Suburban.Each key remote, or FOB, is programmed to each individual vehicle. If the FOB is lost please contact your dealer.
Working on a 2002 Chevy is a brill idea
get a new one :I lol