GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2003 🢒 Corvette 🢒 Engine 🢒 Engine Mechanical - 5.7L 🢒 Positive Crankcase Ventilation Hose/Pipe/Tube Replacement

Removal Procedure

    Object Number: 551464 Size: SH
  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. Object Number: 379366 Size: SH
  3. If equipped with the regular production option (RPO) LS1 engine, remove the PCV valve pipe from the left rocker arm cover.

    4. Object Number: 379367 Size: MH
  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. Object Number: 668802 Size: SH
  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

    Object Number: 668802 Size: SH
  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. Object Number: 379367 Size: MH
  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.

    5. 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.

  5. Install the PCV valve pipe strap nut

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


    Object Number: 379366 Size: SH
  6. If equipped with the RPO LS1 engine, install the PCV valve pipe to the left rocker arm cover.

    7. Object Number: 551464 Size: SH
  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.