Sierra 1500 4WD V8-6.0L (2007)
28. Remove and discard the intake manifold gaskets (514).
29. Cover the cylinder head passages in order to prevent dirt or debris from entering the passages.
30. If replacing the intake manifold, perform the following steps, otherwise proceed to step 21 of the installation procedure.
31. Place the intake manifold on a clean work surface.
32. Reposition the brake booster vacuum hose clamp at the intake manifold.
33. Remove the brake booster vacuum hose from the intake manifold nipple.
