GM Service Manual Online
For 1990-2009 cars only
Makes
🢒
Chevrolet
🢒
2009
🢒
Express - AWD
🢒
Diagnostic Navigation
🢒
Vehicle Diagnostic Information
🢒 Intake Air Heater Replacement
Removal Procedure
Disconnect the negative battery cable. Refer to
Battery Negative Cable Disconnection and Connection
.
Remove the charge air cooler outlet pipe. Refer to
Charged Air Cooler Hoses/Pipes Replacement
.
Disconnect the engine wiring harness electrical connector (1) from the intake air heater (IAH).
Disconnect the engine wiring harness electrical connector (2) from the intake air valve.
Remove the nut and the positive battery cable from the IAH.
Remove the intake air valve bolts and valve.
Remove the IAH and remove and discard the IAH gasket.
Installation Procedure
Position a NEW IAH gasket to the intake manifold tube and position the IAH to the intake manifold tube.
Caution:
Refer to
Fastener Caution
in the Preface section.
Position the intake air valve to the IAH and install the intake air valve bolts and tighten to
20 N·m (15 lb ft)
.
Install the positive battery cable and nut to the IAH and tighten to
4 N·m (34 lb in)
.
Connect the engine wiring harness electrical connector (2) to the intake air valve.
Connect the engine wiring harness electrical connector (1) from the intake air heater (IAH).
Install the charge air cooler outlet pipe. Refer to
Charged Air Cooler Hoses/Pipes Replacement
.
Connect the negative battery cable. Refer to
Battery Negative Cable Disconnection and Connection
.