GM Service Manual Online
For 1990-2009 cars only

Timing Chain and Sprocket Removal 7.0L

Tools Required

    • J 8433-1 Puller Bar
    • J 41558 Crankshaft Sprocket Remover
    • J-41558-10 Crankshaft Sprocket Remover Bolts
    • J 41816-2 Crankshaft End Protector

    Object Number: 1552489  Size: SH

    Notice: 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 the camshaft sprocket bolts (206).
  2. Remove the camshaft sprocket (205) and timing chain (208).

  3. Object Number: 1552490  Size: SH
  4. Remove the bolts (231) and chain dampener (232).

  5. Object Number: 1552486  Size: SH
  6. Use the J 41816-2  (1), the J 41558  (2), the J-41558-10  (3) and the J 8433-1  (4) in order to remove the crankshaft sprocket.

  7. Object Number: 1552487  Size: SH
  8. Remove the crankshaft sprocket (207).

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

Timing Chain and Sprocket Removal 6.2L

Tools Required

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

    Object Number: 1658175  Size: SH

    Notice: 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
  4. Remove the bolts (231) and timing chain tensioner (232).

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

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

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