GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2009 🢒 LaCrosse 🢒 Engine 🢒 Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L 🢒 Timing Chain and Sprocket Removal

Special Tools

    • J 8433 Two Jaw Puller
    • J 41558 Crankshaft Sprocket Remover
    • J 41816-2 Crankshaft End Protector

For equivalent regional tools, refer to Special Tools.


    Object Number: 1658175 Size: SH

    Caution: Do not turn the crankshaft assembly after the timing chain has been removed in order to prevent damage to the piston assemblies or the valves.

  1. Remove and discard the camshaft sprocket bolt (206).
  2. Remove the camshaft sprocket (205) and timing chain (208).

    3. Object Number: 1658178 Size: SH
  3. Remove the bolts (231) and timing chain tensioner (232).

    4. Object Number: 1658180 Size: SH
  4. Use the J 41816-2 protector  (1), the J 41558 remover  (2), bolts (3), and the J 8433 puller  (4) in order to remove the crankshaft sprocket.

    5. Object Number: 1658182 Size: SH
  5. Remove the crankshaft sprocket (207).

    6. Object Number: 156149 Size: SH
  6. Remove the crankshaft sprocket key, as required.