GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2009 🢒 Express - AWD 🢒 Engine 🢒 Engine Controls and Fuel - 6.6L 🢒 Intake Air Heater Replacement

Removal Procedure

    Object Number: 1862030 Size: SH
  1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection.
  2. Remove the charge air cooler outlet pipe. Refer to Charged Air Cooler Hoses/Pipes Replacement.
  3. Disconnect the engine wiring harness electrical connector (1) from the intake air heater (IAH).
  4. Disconnect the engine wiring harness electrical connector (2) from the intake air valve.
  5. Remove the nut and the positive battery cable from the IAH.

    6. Object Number: 1862033 Size: SH
  6. Remove the intake air valve bolts and valve.

    7. Object Number: 1862035 Size: SH
  7. Remove the IAH and remove and discard the IAH gasket.

Installation Procedure

    Object Number: 1862035 Size: SH
  1. Position a NEW IAH gasket to the intake manifold tube and position the IAH to the intake manifold tube.

    2. Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 1862033 Size: SH
  2. Position the intake air valve to the IAH and install the intake air valve bolts and tighten to 20 N·m (15 lb ft).

    3. Object Number: 1862030 Size: SH
  3. Install the positive battery cable and nut to the IAH and tighten to 4 N·m (34 lb in).
  4. Connect the engine wiring harness electrical connector (2) to the intake air valve.
  5. Connect the engine wiring harness electrical connector (1) from the intake air heater (IAH).
  6. Install the charge air cooler outlet pipe. Refer to Charged Air Cooler Hoses/Pipes Replacement.
  7. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection.