What is the minimum thickness a rotor can be on 2003 Chevy suburban 1500 z71?

There's no single minimum thickness for a 2003 Chevy Suburban 1500 Z71 rotor. The minimum thickness is specified by the rotor manufacturer and/or is found in your vehicle's repair manual. You must consult your owner's manual or a reputable repair manual (like a Haynes or Chilton manual) for the correct specification.

Trying to operate rotors below the minimum thickness is dangerous. Thin rotors can overheat, warp, and even crack, leading to brake failure. Always measure your rotors with a reliable caliper and replace them when they reach the minimum thickness. Auto parts stores can also usually tell you the minimum thickness when you provide them with your vehicle's year, make, and model.