Hummer H3. Manual — part 508

Fig. 68: Throttle Body Bolts/Nuts
Courtesy of GENERAL MOTORS CORP.

40. Remove the throttle body bolts/nuts.

41. Remove the throttle body.

42. Remove and discard the throttle body gasket.

2008 Hummer H3

2008 ENGINE Engine Mechanical - 5.3L - H3

Fig. 69: Fuel Rail Bolts
Courtesy of GENERAL MOTORS CORP.

43. Remove the fuel rail bolts.

IMPORTANT: Lift evenly on both sides of the fuel rail until all injectors are

2008 Hummer H3

2008 ENGINE Engine Mechanical - 5.3L - H3

44. Remove the fuel rail.

45. Remove and discard the fuel injector lower O-ring seals.

Fig. 70: Brake Booster Vacuum Hose Nipple
Courtesy of GENERAL MOTORS CORP.

46. Remove the brake booster vacuum hose nipple.

Installation Procedure

removed from their bores.

IMPORTANT: Evenly push in the RED collar in order to remove the nipple.

2008 Hummer H3

2008 ENGINE Engine Mechanical - 5.3L - H3

Fig. 71: Brake Booster Vacuum Hose Nipple
Courtesy of GENERAL MOTORS CORP.

1. If the intake manifold was replaced perform the following steps, otherwise proceed to step

21.

2. Install the brake booster vacuum hose nipple to the NEW intake manifold.

IMPORTANT: Evenly push in the RED collar in order to install the nipple.

2008 Hummer H3

2008 ENGINE Engine Mechanical - 5.3L - H3