S10 Pickup, Sonoma 2000-2004

Flywheel or Flexplate & Ring Gear

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Removal & Installation



2.2L Engine
  1. Disconnect the negative battery cable.
  2.  
  3. Remove the transmission.
  4.  
  5. Remove the clutch assembly, if equipped.
  6.  
  7. Remove the flywheel bolts.
  8.  
  9. Remove the flywheel spacer if a flywheel spacer is used.
  10.  
  11. Remove the flywheel.
  12.  
  13. Clean and inspect the flywheel. If the flywheel is cracked or damaged replace the flywheel.
  14.  

To install:

  1. Install the flywheel.
  2.  
  3. Install the flywheel spacer if a flywheel spacer is used.
  4.  
  5. You must thoroughly remove the old thread adhesive from the flywheel bolts and bolt holes. Use a round nylon bristle brush in order to remove the old adhesive. Apply Loctite® 271 GM P/N 12345493 (Canadian P/N 10953488) or equivalent to all flywheel bolts. Carefully follow the instructions that are included with the thread locking compound in order to ensure that the bolts are retained properly.
  6.  
  7. Install the flywheel bolts and tighten them to 55 ft. lbs. (75 Nm).
  8.  
  9. Install the clutch assembly, if equipped.
  10.  
  11. Install the transmission.
  12.  
  13. Connect the negative battery cable.
  14.  

4.3L Engines
  1. Disconnect the negative battery cable.
  2.  
  3. Remove the transmission.
  4.  
  5. Remove the clutch assembly, if equipped.
  6.  
  7. Remove the flywheel bolts.
  8.  
  9. Remove the flywheel.
    NOTE
    If replacing the engine flywheel (manual transmission), then NEW flywheel weights must be installed into the NEW engine flywheel in the same location as the old flywheel weights in the old engine flywheel.

  10.  
  11. Note the position of any flywheel weights for assembly (if applicable).
  12.  
  13. Clean and inspect all parts.
  14.  

To install:

  1. Note the position of the flywheel weights and install the NEW flywheel weights as required. A properly installed flywheel weight will be flush or slightly below flush with the face of the engine flywheel.
  2.  
  3. Install the engine flywheel (1 or 2) to the crankshaft. Align the engine flywheel locator hole to the flywheel locator pin.

    Click image to see an enlarged view

    Fig. Flywheel bolt tightening sequence-4.3L engine

  4.  
  5. Install the flywheel bolts and tighten them in sequence to 74 ft. lbs. (100 Nm).
  6.  
  7. Install the clutch assembly, if equipped.
  8.  
  9. Install the transmission.
  10.  
  11. Connect the negative battery cable.
  12.  

 
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