There are two different rotors. One's for the trucks and ones for the tahoes/suburbans. One is deeper than the other by a few mm. Hope this helps.
Carquest or auto Value part numbers
55066 325mm diameter x 85mm deep from flange
55084 330mm diameter x 90mm deep from flange
Last edited by liftedandgifted; June 23rd, 2010 at 10:26 AM.