Positive Crankcase Ventilation Valve Replacement LS1 Engine

1. Remove the positive crankcase ventilation (PCV) tube from the right rocker arm cover and intake manifold, if necessary.



2. Remove the PCV valve pipe from the left rocker arm cover.



3. Remove the PCV valve pipe strap nut.
4. Remove the PCV valve pipe from the right rocker arm cover and intake manifold.
5. Remove the PCV valve from the valve pipe.

1. Install the PCV valve to the valve pipe.
2. Install the PCV valve pipe to the right rocker arm cover and intake manifold.

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

3. Install the PCV valve pipe strap nut.

Tighten
Tighten the PCV valve pipe strap nut to 12 N·m (106 lb in).




4. Install the PCV valve pipe to the left rocker arm cover.



5. Install the PCV tube to the right rocker arm cover and intake manifold, if necessary.

Positive Crankcase Ventilation Valve Replacement LS6 Engine

1. Remove the positive crankcase ventilation (PCV) valve hose (1) from the intake manifold.
2. Remove the positive crankcase ventilation (PCV) valve hose (1) from the valley cover.
3. Remove the PCV valve from the valve hose.

1. Install the PCV valve to the valve hose.
2. Install the PCV valve hose (1) to the valley cover.
3. Install the PCV valve hose (1) to the intake manifold.