GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2008 🢒 G8 🢒 Engine 🢒 Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L 🢒 Engine Coolant Air Bleed Pipe Replacement

Removal Procedure

    Important: Removal of the intake manifold is NOT required to service the coolant air bleed pipe, but is required to service the coolant air bleed pipe covers and/or gaskets.


    Object Number: 1949677 Size: SH
  1. Drain a gallon of coolant. Refer to Cooling System Draining and Filling.
  2. Remove the throttle air body assembly. Refer to Throttle Body Assembly Replacement.
  3. Remove the coolant air bleed hose (4).
  4. Remove the coolant air bleed pipe mounting bolts (3).
  5. Remove the coolant air bleed pipe (1) and O-rings (2).

Installation Procedure

    Object Number: 1949677 Size: SH
  1. Position the coolant air bleed pipe (1) and O-rings (2) on the cylinder heads.
  2. Install the mounting bolts (3) for the coolant air bleed pipe (1).

    3. Tighten
    Tighten the bolts to 12 N·m (106 lb in).

  3. Install the coolant air bleed hose (4).
  4. Install the throttle air body assembly. Refer to Throttle Body Assembly Replacement.
  5. Fill the cooling system. Refer to Cooling System Draining and Filling.