Chevrolet Silverado / GMC Sierra. Service manual — part 1943

Fig. 149: View Of Intake Manifold Bolts
Courtesy of GENERAL MOTORS CORP.

27. Loosen the intake manifold bolts (512).

IMPORTANT: The aid of an assistant may be helpful in holding the engine

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado,

Sierra & Silverado

28. Remove the intake manifold (500).

29. Cover the cylinder head passages in order to prevent dirt or debris from entering the

passages.

Fig. 150: View Of Intake Manifold-To-Cylinder Head Gasket
Courtesy of GENERAL MOTORS CORP.

30. Remove and discard the intake manifold gaskets (514).

harness up out of the way so the upper intake manifold cover
does not get caught against the engine harness.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado,

Sierra & Silverado

Fig. 151: View Of Vacuum Brake Booster Hose
Courtesy of GENERAL MOTORS CORP.

31. If replacing the intake manifold, perform the following steps, otherwise proceed to step 21

of the installation procedure.

32. Place the intake manifold on a clean work surface.

33. Reposition the brake booster vacuum hose clamp at the intake manifold.

34. Remove the brake booster vacuum hose from the intake manifold nipple.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado,

Sierra & Silverado

Fig. 152: View Of Upper Intake Manifold Cover & Nut
Courtesy of GENERAL MOTORS CORP.

35. Remove the upper intake manifold cover nut.

36. Remove the upper intake manifold cover.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado,

Sierra & Silverado