Yukon 2WD V8-5.3L (2007)
5. Cover the brake caliper with a shop towel.
6. Apply filtered, non-lubricated compressed air into the brake hose inlet fitting port of the brake caliper.
7. If one of the pistons fails to be removed from the brake caliper, perform the following steps.
1. Reposition the piston that has been removed back into the brake caliper.
2. Using a small block of wood and a C-clamp, slowly tighten the C-clamp until the piston is half way into the brake caliper. It does not have
to be fully seated.
3. Position a second block of wood in front of the piston that remains in the brake caliper.
4. Cover the brake caliper with a shop towel.
5. Apply filtered, non-lubricated compressed air into the brake hose inlet fitting port of the brake caliper.
