GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2001 🢒 Envoy - 4WD 🢒 General Information 🢒 General Information 🢒 Flywheel to Torque Converter Bolt Replacement

Removal Procedure
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Remove the starter. Refer to Starter Motor Replacement in Engine Electrical.

    3. Object Number: 408374 Size: SH
  3. Remove the converter housing access plug.
  4. Mark the converter and flywheel for proper alignment for installation.

    5. Object Number: 394457 Size: SH
  5. Remove the flywheel to converter bolts.

Installation Procedure

    Object Number: 394457 Size: SH

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  1. Install the flywheel to converter bolts. Hand start the bolts.

    2. Tighten
    Tighten the bolts to 60 N·m (44 lb ft).


    Object Number: 408374 Size: SH
  2. Install the converter housing access plug.
  3. Install the starter. Refer to Starter Motor Replacement in Engine Electrical.
  4. Lower the vehicle.