GM Service Manual Online
For 1990-2009 cars only

Tools Required

    • J 45059 Angle Meter
    • KM-470-B Angular Meter Gage

Removal Procedure

    Caution: Refer to Battery Disconnect Caution in the Preface section.


    Object Number: 1289775  Size: SH
  1. Disconnect the negative battery cable.
  2. Remove the timing belt. Refer to Timing Belt Replacement .
  3. Remove the camshaft gears. Refer to Camshaft Gear Replacement .
  4. Remove the timing belt automatic tensioner bolt.
  5. Remove the timing belt automatic tensioner.

  6. Object Number: 1291155  Size: SH
  7. Remove the timing belt idler pulley bolt and nut.
  8. Remove the timing belt idler pulleys.
  9. Remove the engine mount retaining bolts.
  10. Remove the engine mount.
  11. Remove the crankshaft gear bolt.
  12. Remove the crankshaft gear.

  13. Object Number: 1289777  Size: SH
  14. Remove the rear timing belt cover bolts.
  15. Remove the rear timing belt cover.

Installation Procedure


    Object Number: 1289777  Size: SH
  1. Install the rear timing belt cover.
  2. Notice: Refer to Fastener Notice in the Preface section.

  3. Install the rear timing belt cover bolts.
  4. Tighten
    Tighten the rear timing belt cover bolts to 7 N·m (62 lb in).

  5. Install the engine mount and retaining bolts.
  6. Tighten
    Tighten the engine mount retaining bolts to 45 N·m (33 lb ft).


    Object Number: 1289844  Size: SH
  7. Install the timing belt idler pulleys.
  8. Install the timing belt idler pulley bolt and nut.
  9. Tighten

        • Tighten the timing belt idler pulley bolt to 25 N·m (18 lb ft).
        • Tighten the timing belt idler pulley nut to 25 N·m (18 lb ft).
  10. Install the crankshaft timing belt drive gear and bolt.
  11. Tighten
    Tighten the crankshaft gear bolt to 145 N·m (107 lb ft) plus 30 degrees and plus 15 degrees using J 45059 or the KM-470-B  (1).


    Object Number: 1289775  Size: SH
  12. Install the timing belt automatic tensioner and bolt.
  13. Install the camshaft gears. Refer to Camshaft Gear Replacement .
  14. Install the timing belt and timing belt cover. Refer to Timing Belt Replacement .
  15. Connect the negative battery cable.