How do you program the remote key FOB on a 2003 Chevy Silverado?

You can't program a 2003 Chevy Silverado key fob yourself using only the key fob and the truck. These trucks require a specific programming procedure that usually involves a scan tool or a dealer's equipment. There's no simple DIY method like some newer vehicles offer.

Here's why and what your options are:

* No "self-programming" mode: Unlike some later model vehicles with straightforward key fob programming sequences, the 2003 Silverado doesn't have this feature built-in.

* Dealer or Locksmith: Your best bet is to visit a Chevrolet dealership or a qualified automotive locksmith. They have the necessary equipment (usually a scan tool capable of communicating with the vehicle's BCM - Body Control Module) to program the key fob correctly.

* Third-Party Scan Tools: Some advanced scan tools available for purchase online *might* be capable of programming the key fob, but you'll need one that explicitly supports this function for a 2003 Silverado and be comfortable with using the software. If you're not experienced with automotive diagnostic tools, this option is risky and could potentially cause more problems.

In short: Take it to a professional. Trying to program it yourself without the correct tools is unlikely to succeed and could lead to unnecessary frustration or damage.