GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 1999 🢒 Riviera 🢒 Engine 🢒 Engine Controls - 3.8L 🢒 Crankcase Ventilation System Inspection

Removal Procedure

    Object Number: 393157 Size: SH
  1. Remove the 2 access cover retaining bolts (1), while holding down the crankcase ventilation valve access cover (2).
  2. Remove the crankcase ventilation valve access cover (2).
  3. Remove the spring (3).
  4. Remove the crankcase ventilation valve (4) and O-ring (5).

Installation Procedure

    Object Number: 393157 Size: SH
  1. Install the crankcase ventilation valve (4) and O-ring (5).
  2. Install the spring (3).
  3. Install the crankcase ventilation valve access cover (2).
  4. Install the 2 access cover retaining bolts, while holding down crankcase ventilation valve access cover.