ok, i have 02 chevy 2500hd 6.0 gas
there are 2 brake rotors available. witch ones fit my truck?

Brake Rotor - Rear - Advance Auto Parts

w/ 10.50 Diameter ring gear ---43.99

4.63" Center Hole---77.99


so i'm supposed to go take my differential cover off to measure my ring gear?

 

Look at the hub flange right where the rotor rides against the flange. It will look like there is a small "step" on the hub where it is bigger, for the bigger holed rotor. The rotors look identical except for the difference in the hole diameter and it is not a very big difference in diameters if I remember correctly from when I did mine last September.

 

they show only one at autozone.

AutoZone.com | | Brake Rotor - Rear | DURALAST BRAKE ROTOR

 

i measured the middle hub it was just over 4 1/2 with a tape... i have some nice digital calipers but they are at my mother in laws 2 hours away.

so i bought the 4.63 center hole..

sorry no auto zone no where near me... living on a peninsula sucks 20-30 min just to drive of then an hour 30 min to Brunswick,me where they have just about everything... except auto zone.. they have napa, carquest, advanced auto and VIP auto parts..

i'm gonna find out this after noon if they fit, if not i guess i'm driving back to brunswick for a return