PCV Valve Hose: Service and Repair

Crankcase Ventilation Hoses/Pipes Replacement

Removal Procedure





1. Remove the Throttle Position (TP) sensor harness clip from the Positive Crankcase Ventilation (PCV) tube.
2. Remove the PCV tube from the right rocker arm cover and throttle body, if necessary.





3. If equipped with the Regular Production Option (RPO) LS1 engine, remove the PCV valve pipe from the left rocker arm cover.





4. If equipped with the RPO LS1 engine, remove the PCV valve pipe strap nut.
5. Remove the PCV valve pipe from the right rocker arm cover and intake manifold.
6. If replacing the PCV valve pipe, remove the PCV valve from the pipe.





7. If equipped with the RPO LS6 engine, remove the PCV valve hose (1) from the valley cover and intake manifold.
8. If replacing the PCV valve hose, remove the PCV valve from the hose.

Installation Procedure
1. If equipped with the RPO LS6 engine, install the PCV valve to the hose, if necessary.





2. Install the PCV valve hose (1) to the valley cover and intake manifold.
3. If equipped with the RPO LS1 engine, install the PCV valve to the valve pipe, if necessary.





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

Notice: Refer to Fastener Notice in Service Precautions.

5. Install the PCV valve pipe strap nut.
Tighten the PCV strap nut to 12 Nm (106 inch lbs.).





6. If equipped with the RPO LS1 engine, install the PCV valve pipe to the left rocker arm cover.





7. Install the PCV tube to the right rocker arm cover and throttle body, in necessary.
8. Install the TP sensor harness clip to the PCV tube.