Sierra 3500 Denali 4WD V8-6.0L (2011)
9. Disconnect the rear brake pipe fitting (1).
10. Cap the brake pipe fitting to prevent brake fluid loss and contamination.
11. Disconnect the right front brake pipe fitting (2).
12. Cap the brake pipe fitting to prevent brake fluid loss and contamination.
13. Disconnect the left front brake pipe fitting (3).
14. Cap the brake pipe fitting to prevent brake fluid loss and contamination.
Note: It is not necessary to remove the BPMV bracket bolts.
15. Loosen, but do not remove, the BPMV bracket bolts (1).
