GM Service Manual Online
For 1990-2009 cars only

Special Tools

    • CH-48027 Digital Pressure Gage
    • CH-48027-9 Adapter

    Note: The engine should be at normal operating temperature.

  1. Remove the exhaust manifold heat shield. Refer to Catalytic Converter Replacement.
  2. Caution: Refer to Fastener Caution in the Preface section.

  3. Unscrew the closure bolt.
  4. Tighten
    Tighten the bolt to 15 N·m (11 lb ft).

  5. Install CH-48027 and CH-48027-9 in the hole.
  6. Start the engine.
  7. Check the engine oil pressure.
  8. The engine oil pressure must be at least 130 kPa (18.85 psi) at idle speed and oil temperature must be greater than or equal to 27°C (80°F).