GM Service Manual Online
For 1990-2009 cars only

    Object Number: 1866954  Size: SH
  1. Ensure that the crankshaft is in the stage 2 timing drive assembly position (1).

  2. Object Number: 2026594  Size: SH
  3. Install the secondary timing chain (1).

  4. Object Number: 1853247  Size: SH
  5. Place the secondary timing chain bank 1 around the timing chain idler sprocket bank 1, aligning the secondary timing chain link (1) with the alignment access hole (2) made in the timing chain idler sprocket bank 1.

  6. Object Number: 1853249  Size: SH
  7. Wrap the secondary timing chain bank 1 around both camshaft position actuator bank 1.
  8. Ensure there are 10 links (1) between the secondary timing chain links for the camshaft position actuator bank 1.

  9. Object Number: 1853250  Size: SH
  10. Align the exhaust camshaft position actuator bank 1 alignment triangle mark (1) with the secondary timing chain bank 1 link (2).

  11. Object Number: 1853252  Size: SH
  12. Align the intake camshaft position actuator bank 1 alignment triangle mark (2) with the secondary timing chain bank 1 link (1).

  13. Object Number: 1853254  Size: SH
  14. There will be 22 links (1) between the timing chain idler sprocket bank 1 and each camshaft position actuators bank 1.