if it has electric door locks and if he follows the instructions i gave about programming even without a fob and it cycles the locks then it is equipped with keyless entry. the security will flash after the key is shut off ( mine does) if it does nothing trying to "program" then it probably doesn't have keyless unless it is the older system (which requires a different method of programming) ... im going out on a limb on this one but i think all blazers with electric door locks have keyless.. mine was an ls with electric door locks and keyless

 

Well first of all i dont have a problem with the security light flashing, just pops on when the ignition is turned on(which i know is normal). but i will check the glovebox for the code for keyless...