Well i just got this blazer and the key will come out no matter were u have it ! I dont know if i should replace switch or what?

Sounds like its the lock cylinder. My 88 S-10 P/U did the same thing. You didn't even need the keys to start it. Ebay?

i have a 91 s-10 blazer that does the same thing, you dont have to worry about it if the key is all the way off in the lock position, it wont turn if the arrow is pointing to lock, however if you turn it off just right, you can in fact start the car without a key.

Well i just got this blazer and the key will come out no matter were u have it ! I dont know if i should replace switch or what?

What year?

my blazer is a 91

my blazer is a 91

I am talking to the thread stater.

if the key is coming out I would change it for security.