I bought a 1999 K2500 GMC Suburban LT and it didnt come with any keyless door openers. I am fairly sure the truck originally did. Other than going to the dealer.....where do I look on the truck to see if I have the equipment that makes it work?

I have heard you can buy the controllers on Ebay and hold them under the dash and push the buttons at the same time and they will set themselves. Any truth to this?

While we are at it......when you run the VIN# on this truck it comes up as a CNG-ready vehicle. Compressed natural gas. We have not found and lines, or a tank on the vehicle. Does any one know what the difference is? What it came with to be CNG ready?

Might be on the glove box codes. Here is how to do it if it is there. You were close.
http://www.programyourremote.com/

Might be on the glove box codes. Here is how to do it if it is there. You were close.
http://www.programyourremote.com/

Thanks for the info!!!! It worked.