GM Service Manual Online
For 1990-2009 cars only

    Object Number: 520268  Size: SH
  1. Remove the camshaft sprocket retaining bolt and washer.

  2. Object Number: 358425  Size: SH
  3. Remove the fuel injection pump drive gear.

  4. Object Number: 59876  Size: SH

    Important: Do not damage the square bosses of the crankshaft sprocket during removal.

  5. Remove the timing chain, camshaft sprocket and crankshaft sprocket assembly.

  6. Object Number: 59879  Size: SH
  7. Remove the fuel injection pump drive gear woodruff key.
  8. Remove the camshaft sprocket woodruff key.
  9. Remove the crankshaft sprocket woodruff key.