Question about rotors

[Upos1966]

Hello, I have an awesome 05 silverado 1500 (not a Z71) with 17's 6 lug, ext. cab and 5.3L, I'm about to replace the front rotors and pads and my search shows rotors for trucks with rear rotors only and trucks for rear drums only. I have rear drums. Whats the difference in the front rotors with rear drums vs. rear rotors? Thanks.

[Bob D]

I think front rotor w/ rear drums = larger diam. rotor.

[Daryl LBZ]

2005 was the first year for rear drum brakes on a GMT800 pickup. They also made the front rotors larger hence the 17" wheels vs the old 16" that were on previous years.