GM Service Manual Online
For 1990-2009 cars only

Tools Required

    • EN 46106 Engine Flywheel Holding Tool
    • J 45059 Angle Meter
  1. Place the engine flywheel in position on the crankshaft.
  2. Install 2 NEW bolts in location at the top and bottom of the engine flywheel bolt pattern allowing the engine flywheel to hang in position.

  3. Object Number: 945978  Size: SH
  4. Install the EN 46106 .
  5. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1395957  Size: SH
  6. Install the remaining NEW engine flywheel bolts.
  7. Tighten

    1. Tighten the NEW engine flywheel bolts to 30 N·m (22 lb ft).
    2. Tighten the NEW engine flywheel bolts an additional 45 degrees using the J 45059 .

    Object Number: 945978  Size: SH
  8. Remove the EN 46106 .

Engine Flywheel Installation LY7

Special Tools

    • EN 46106 Engine Flywheel Holding Tool
    • J 45059 Angle Meter
        For equivalent regional tools, refer to Special Tools
  1. Place the engine flywheel in position on the crankshaft.
  2. Install 2 NEW bolts in location at the top and bottom of the engine flywheel bolt pattern allowing the engine flywheel to hang in position.

  3. Object Number: 945978  Size: SH
  4. Install the EN 46106 tool .
  5. Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 1395957  Size: SH
  6. Install the remaining NEW engine flywheel bolts.
  7. 4.1. Tighten the NEW engine flywheel bolts to 30 N·m (22 lb ft).
    4.2. Tighten the NEW engine flywheel bolts an additional 45 degrees using the J 45059 meter .

    Object Number: 945978  Size: SH
  8. Remove the EN 46106 tool .

Engine Flywheel Installation LCS

Special Tools

J 45059 Angle Meter

For equivalent regional tools, refer to Special Tools.


    Object Number: 2137820  Size: SH
  1. Install the engine flywheel (2).
  2. Caution: Refer to Fastener Caution in the Preface section.

  3. Install the NEW engine flywheel bolts (1) and:
  4. 2.1. Tighten the NEW engine flywheel bolts to 30 N·m (22 lb ft).
    2.2. Tighten the NEW engine flywheel bolts an additional 45 degrees using the J 45059 meter .