TrailBlazer 4WD L6-4.2L (2007)
1. Install the AIR hose assembly by rotating over the top of the engine.
Notice: Refer to Fastener Notice.
Important: Add a drop of GM P/N 12345382 (Canadian P/N 10953489) to the bolt threads.
2. Install the bolt and fir-tree fasteners securing the AIR pipe to the cylinder head. Tighten the bolt until fully seated.
3. Connect the AIR hose to the air box.