GM Service Manual Online
For 1990-2009 cars only

    Object Number: 33638  Size: SH
  1. Uncover fuel injectors.
  2. Install the new injector O-ring seals.
  3. Lubricate the O-ring seals with engine oil.
  4. Uncover the injector openings in the cylinder head.
  5. Install the fuel rail onto the cylinder head.
  6. Install the fuel rail to the camshaft housing bolts.
  7. Tighten
    Tighten the bolts to 26 N·m (19 lb ft).

    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.


    Object Number: 33635  Size: SH
  8. Install the fuel line retaining clamp and retainer to the bracket on top of the camshaft housing.
  9. Tighten
    Tighten the bolt to 10 N·m (88 lb in).