Star bit on front brake 2000 chevy 1500 ?

YES THEY COME IN METRIC SIZES. AND,MOST GM PRODUCTS ARE ALL METRIC THESE DAYS. GET A MERTIC SET. YOU WILL ALWAYS USE THEM AGAIN. TOOLS ARE A GOOD INVESTMENT.

The right size is T55 clean internal star out well with a pick tap the head with hammer to try to help break it free. If you have already striped it with a t50 bit try using a sharp chisel and a hammer to form a notch in the side of the head of the bolt than use a blunt chisel and a hammer to try to turn it out. Good Luck !

The proper socket will fit snug.The range of sizes is such that one size smaller will feel like it will work.

You can pick up the proper one at a auto parts store.

AND, make sure it's not an allen bolt. I don't think GM uses torx on the calipers.