GM Service Manual Online
For 1990-2009 cars only

Installation Procedure

Tools Required

J 44628 Bearing Bridge Sleeve Wrench


    Object Number: 896296  Size: SH
  1. Install the crankshaft reluctor ring.
  2. Install the crankshaft reluctor bolts. Use the new crankshaft sensor bolts. Refer to Fastener Notice in Cautions and Notices.
  3. Tighten
    Tighten the crankshaft reluctor ring screw to 15 N·m (11 lb ft).

  4. Install the crankshaft bearings to the engine block.
  5. Install the crankshaft to the engine block.

  6. Object Number: 896091  Size: SH
  7. Apply clean engine oil to the bearing surfaces.
  8. Install the main bearings to the main bearing caps.
  9. Apply RTV sealer, LOCTITE® 5900 or equivalent to the fourth main bearing cap.

  10. Object Number: 896003  Size: SH
  11. Install the main bearing caps to the engine block. Place the main bearing caps in numerical order.

  12. Object Number: 896005  Size: SH

    Important: Orient the torsional bridge with the arrow pointing to the front of the engine.

  13. Install the crankshaft bearing bridge.
  14. Important: Use the new main bearing cap bolts or damage may occur when the final tightening is performed.

  15. Install the main bearing cap bolts loosely.
  16. Clean the old thread locking compound from the adjusting sleeves.
  17. Back out the crankshaft bearing bridge adjusting sleeves until the bushings do not contact the engine block when the bridge is fully seated. Tighten the main bearing cap bolts in 3 passes.
  18. Tighten
    Tighten the crankshaft bearing bridge bolts to 60 N·m(44 lb ft) + 15°.


    Object Number: 896063  Size: SH
  19. Apply the thread locking compound LOCTITE® 272 or equivalent to the crankshaft bearing bridge adjusting sleeves.
  20. Tighten the crankshaft bearing bridge adjusting sleeves using the J 44628 .
  21. Tighten
    Tighten the crankshaft bearing bridge adjusting sleeves to 8 N·m (71 lb in).


    Object Number: 896038  Size: SH
  22. Tighten the outer crankshaft bearing bridge bolts.
  23. Tighten
    Tighten the outer crankshaft bearing bridge bolts to 20 N·m (15 lb ft).