GM Service Manual Online
For 1990-2009 cars only

Tools Required

    •  J 36660-A Torque Angle Meter
    •  J 38122-A Harmonic Balancer Holder

Removal Procedure

    Important: It may be necessary to remove the chamfer from the edge of an 18 mm socket to obtain a full socket engagement on the thin headed flywheel bolts.

    The flywheel can not be rotated to balance the flywheel to the engine because it can only be installed on the vehicle one way.

  1. Remove the transmission assembly. Refer to one of the following procedures:
  2. •  Transmission Replacement in Automatic Transaxle-3T40
    •  Transmission Replacement in Manual Transmission-M86/M94
  3. Remove the right front fender liner. Refer to Front Fender Liner Replacement in Body Front End.
  4. Important: Mark the relationship of the clutch cover assembly to the flywheel in order to assure proper balance during reassembly.

  5. For vehicle equipped with a manual transmission, install the clutch and pressure plate and clutch cover assembly. Refer to Clutch Pressure and Driven Plate Replacement in Clutch.

  6. Object Number: 33568  Size: SH
  7. Remove the flywheel attaching bolt while using J 38122-A in order to prevent crankshaft rotation.
  8. Remove the flywheel and retainer.
  9. The thread adhesive must be thoroughly removed from the flywheel.

Installation Procedure

  1. Install the new bolts or apply adhesive/Sealant compound GM P/N 123454493 or equivalent to all flywheel to crankshaft bolts that are being re-used.
  2. Carefully follow the instructions included with the thread locking compound to ensure proper bolt retention.

  3. Object Number: 33568  Size: SH
  4. Install the flywheel and the attaching bolts.
  5. While holding the crankshaft balancer with J 38122-A tighten the bolts evenly to 30 N·m (22 lb ft), then rotate the bolts 45 degrees using J 36660-A .
  6. Install the transmission assembly. Refer to Transmission Replacement in Automatic Transaxle-3T40.
  7. For vehicle equipped with a manual transmission, install the clutch and pressure plate and clutch cover assembly. Refer to Clutch Pressure and Driven Plate Replacement in Clutch.
  8. Install the right front fender liner. Refer to Front Fender Liner Replacement in Body Front End.