GM Service Manual Online
For 1990-2009 cars only

Positive Crankcase Ventilation Hose/Pipe/Tube Replacement LLY, LBZ

Removal Procedure

  1. Remove the engine cover. Refer to Engine Cover Replacement .
  2. Remove the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement .
  3. Remove the charged air cooler inlet pipe from the turbocharger. Refer to Charged Air Cooler Hoses/Pipes Replacement .
  4. Disconnect the wiring harness connector from the glow plug module.

  5. Object Number: 1726822  Size: SH
  6. Remove the glow plug wiring harness bracket bolt and position the wiring harness and bracket aside.

  7. Object Number: 1726815  Size: SH
  8. Remove the positive crankcase ventilation (PCV) pipe bolt from the left valve cover and disconnect the PCV pipe.

  9. Object Number: 1726820  Size: SH
  10. Remove the PCV pipe bolt from the right valve cover and disconnect the PCV pipe.

  11. Object Number: 1726809  Size: SH
  12. Compress the clamp and disconnect the PCV pipe from the air intake pipe.
  13. Remove the PCV hose/pipe.

Installation Procedure

  1. Position the PCV hose/pipe.

  2. Object Number: 1726809  Size: SH
  3. Compress the clamp and connect the PCV pipe to the air intake pipe.

  4. Object Number: 1726820  Size: SH
  5. Position the PCV pipe to the right valve cover and loosely install the PCV pipe bolt.

  6. Object Number: 1726815  Size: SH
  7. Position the PCV pipe to the left valve cover and loosely install the PCV pipe bolt.
  8. Notice: Refer to Fastener Notice in the Preface section.

  9. Tighten the right and left PCV pipe bolts.
  10. Tighten
    Tighten the PCV pipe bolts to 18 N·m (13 lb ft).


    Object Number: 1726822  Size: SH
  11. Position the glow plug wiring harness to the original position and install the wiring harness bracket bolt.
  12. Connect the wiring harness connector to the glow plug module.
  13. Install the charged air cooler inlet pipe to the turbocharger. Refer to Charged Air Cooler Hoses/Pipes Replacement .
  14. Install the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement .
  15. Install the engine cover. Refer to Engine Cover Replacement .