GM Service Manual Online
For 1990-2009 cars only

Cylinder Head Installation LDK

Special Tools

EN-45059 Angle Meter

For equivalent regional tools, refer to Special Tools.


    Object Number: 2074558  Size: SH

    Note: Do not use any sealing material.

  1. Install the cylinder head gasket (2) to the block.
  2. Install the cylinder head (1). Ensure the number 1 cylinder is at top dead center (TDC). The key on the crankshaft should be on top in the 12 o'clock position.
  3. Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 412510  Size: SH

    Note: Always use NEW cylinder head bolts.

  4. Install NEW cylinder head bolts.
  5. 3.1. Tighten the bolts in sequence to 30 N·m (22 lb ft).
    3.2. Tighten the bolts an additional 155 degrees in sequence using the EN-45059 angle meter .

    Object Number: 2146376  Size: SH
  6. Install the front cylinder head bolts (1) and tighten to 35 N·m (26 lb ft).

Cylinder Head Installation LTD

Special Tools

EN-45059 Angle Meter

For equivalent regional tools, refer to Special Tools.


    Object Number: 2148512  Size: SH

    Note: Do not use any sealing material.

  1. Install the cylinder head gasket to the block.
  2. Install the cylinder head (1).
  3. Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 412510  Size: SH

    Note: Always use new cylinder head bolts.

  4. Install and tighten the cylinder head bolts in sequence.
  5. • Tighten the bolts to 30 N·m (22 lb ft).
    • Using the EN-45059 meter , tighten the bolts an additional 155 degrees in sequence.

    Object Number: 2146376  Size: SH
  6. Install the front cylinder head bolts (1) and tighten to 35 N·m  (26 lb ft).