If you need a Chevy HHR key fob programmer, do some research before buying.

Batteries fade and die over time, but but changing the cell in your Chevrolet key fob doesn't have to be difficult.

How To A Program GM Key Fob A key fob, also called a keyless entry remote or keyless transmitter, controls your vehicle’s locks, trunk and alarm from a distance. Every key fob must be programmed to ...

On modern Chevrolet key fobs, the key itself is used as a tool to help you swap out the old battery for a new one.