GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2008 🢒 TopKick C-Series (Conventional) C4/C5 🢒 Engine 🢒 Engine Controls and Fuel - 6.6L 🢒 Intake Air Valve Replacement

Removal Procedure

    Object Number: 1864640 Size: SH
  1. Remove the charge air cooler outlet pipe. Refer to Charge Air Cooler Inlet Pipe and Outlet Pipe Replacement .
  2. Disconnect the engine wiring harness electrical connector (1) from the intake air valve.

    3. Object Number: 1864642 Size: SH
  3. Remove the intake air valve bolts and valve.

Installation Procedure

    Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1864642 Size: SH
  1. Position the intake air valve to the intake air heater (IAH) and install the intake air valve bolts.

    2. Tighten
    Tighten the bolts to 20 N·m (15 lb ft).


    Object Number: 1864640 Size: SH
  2. Connect the engine wiring harness electrical connector (2) to the intake air valve.
  3. Install the charge air cooler outlet pipe. Refer to Charge Air Cooler Inlet Pipe and Outlet Pipe Replacement .