GM Service Manual Online
For 1990-2009 cars only

Crankshaft Balancer Installation LDK

Special Tools

    • EN-38122-A Crankshaft Balancer Holder
    • EN-43653 Flywheel Holding Tool
    • EN-45059 Angle Meter
    • EN-48585 Crankshaft Balancer Guide
    • EN-48953 Camshaft Actuator Locking Tool

For equivalent regional tools, refer to Special Tools.


    Object Number: 2141373  Size: SH

    Caution: Ensure both components are aligned correctly or serious engine damage will occur.

  1. Install the balancer (2) onto the EN-48585 guide  (1). Use care to properly align the keyway and flats on the balancer with the oil pump drive.
  2. Install the crankshaft balancer into the end of the crankshaft.
  3. Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 2148293  Size: SH

    Note: EN-43653 flywheel holding tool may be used instead of EN-38122-A crankshaft balancer holder to prevent crankshaft rotation.

    Note: Always install a NEW crankshaft balancer retaining bolt.

  4. Install a NEW retaining bolt. Use EN-38122-A holder  (1) and a breaker bar to prevent the crankshaft from rotating, and tighten the bolt to 100 N·m (74 lb ft) plus 125 degrees using the EN-45059 angle meter .

  5. Object Number: 2128100  Size: SH
  6. Install EN-48953 locking tool  (1) and tighten the bolts into the cylinder head to 10 N·m (89 lb in).
  7. Release the timing chain tensioner by applying 45 N·m (33 lb ft) counterclockwise torque to the crankshaft balancer bolt.
  8. Remove EN-48953 locking tool .