I just bought a 2001 Chevy Blazer LS 4x4. It came with a "GM" RKE fob that does work. I bought two new fobs with matching numbers from the back of the original fob. I have tried to program the new fobs but the "hold down unlock and cycle the key" method does not work. I do not have the "AU0" rpo code in the glove box. I did some more research and discovered that the truck has a "Dealer Installed" keyless module. I found the keyless entry box under the dash, it is GM part # 12463353 FCC ID: EZS249563. The remotes are GM Part # 12495653 FCC ID: EZSOEMTX. Does any one know how to program one of these units? Any help or a point in the right direction would be GREAT!

 

not sure how, gm did mine for free for me but thats because i do alot of business with em

 

Do you have factory RKE or a dealer installed unit like mine?

 

my blazer is factory and my silverado is dealer