GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2009 🢒 STS 🢒 Engine 🢒 Engine Mechanical - 2.8L, 3.0L, 3.2L, or 3.6L 🢒 Cylinder Head Installation - Left Side

Cylinder Head Installation - Left Side LLT

Special Tools

J 45059 Angle Meter

For equivalent regional tools, refer to Special Tools.


    Object Number: 1977921 Size: SH
  1. Ensure the cylinder head locating pins are securely mounted in the cylinder block deck face.
  2. Install a NEW left cylinder head gasket using the deck face locating pins for retention.

    3. Object Number: 1977904 Size: SH
  3. Align the left cylinder head with the deck face locating pins.
  4. Place the left cylinder head in position on the deck face.

    5. Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 902816 Size: SH

    Note: DO NOT allow oil on the cylinder head bolt bosses.

    Note: DO NOT reuse the old cylinder head bolts.

  5. Install the NEW M11 cylinder head bolts (1).
    6. 5.1. Tighten the M11 cylinder head bolts a first pass in sequence to 30 N·m (22 lb ft).
    5.2. Tighten the M11 cylinder head bolts a second pass in sequence an additional 150 degrees using the J 45059 meter .
  6. Install the 2 NEW front M8 left cylinder head bolts (2).
    7. 6.1. Tighten the M8 cylinder head bolts a first pass to 15 N·m (11 lb ft).
    6.2. Tighten the M8 cylinder head bolts a second pass in sequence an additional 75 degrees using the J 45059 meter .