what does the back of it look like? and i havent seen a key fob for these blazers with a light in the middle of it. just saying. can you post a pic of the back of it....that might be the "dead ringer" on this one.

 

The back is just normal black plastic. I have two sets of keys and both key fobs are the same

 

year and country?

 

ok, did some research and that is a "dealer installed" rke unit. you should have a module somewhere under the dash for it, I have no idea how to program it or how it functions

https://blazerforum.com/forum/genera...ed-help-77402/

 

2003 usa and that makes things a little more complicated