Coolant Air Bleed Pipe Installation

WARNING: This page is about a different car, the 2003 GMC Envoy XL and 2003 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.

IMPORTANT: Install the pipe gaskets properly onto the pipe and covers.

Position the gasket O-ring seal onto the nipple portion of the pipe.

Install the gaskets onto the engine coolant air bleed pipe and covers.

Fig 1: Installing Gaskets Onto Engine Coolant Air Bleed Pipe And Covers
Courtesy of GENERAL MOTORS CORP.
Install the pipe (2) and gaskets (3) onto the cylinder heads.
NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
Install the pipe bolts (1).
Install the two pipe studs to the front of the engine.

Tighten

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

Fig 2: Installing Pipe And Gaskets Onto Cylinder Heads
Courtesy of GENERAL MOTORS CORP.
Install the covers (2), gaskets (3), and bolts (1) onto the rear of the engine.
Tighten

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

Fig 3: Installing Covers, Gaskets And Bolts Onto Rear Of Engine
Courtesy of GENERAL MOTORS CORP.
Install the hose and clamp (1) onto the pipe (2).

Fig 4: Installing Hose And Clamp Onto Pipe
Courtesy of GENERAL MOTORS CORP.