GM Service Manual Online
For 1990-2009 cars only

Tools Required

KM-470-B Angular Torque Gauge

Removal Procedure

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


    Object Number: 1758531  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: 1758533  Size: SH
  7. Remove the timing belt idler pulley retaining bolt and nut.
  8. Remove the timing belt idler pulleys.
  9. Remove the engine mount adapter support bracket mounting bolts.
  10. Remove the engine mount adapter support bracket.
  11. Remove the camshaft position sensor. Refer to Camshaft Position Sensor Replacement .

  12. Object Number: 1758547  Size: SH
  13. Remove the crankshaft gear.
  14. Remove the rear timing belt cover bolts.
  15. Remove the rear timing belt cover.

Installation Procedure

    Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1758547  Size: SH
  1. Install the rear timing belt cover.
  2. Tighten
    Tighten the rear timing belt cover bolts to 7 N·m (62 lb in).


    Object Number: 1758671  Size: SH
  3. Install the camshaft position sensor.
  4. Tighten
    Tighten the camshaft position sensor bolt to 8 N·m (71 lb in).


    Object Number: 1758733  Size: SH
  5. Install the engine mount adapter support bracket.
  6. Tighten
    Tighten the engine mount adapter support bracket bolts to 45 N·m (33 lb ft).

  7. Install the timing belt idler pulleys.
  8. Tighten
    Tighten the timing belt idler pulleys bolt and nut to 25 N·m (18 lb ft).


    Object Number: 1758542  Size: SH
  9. Install the crankshaft timing belt drive gear.
  10. Tighten
    Tighten the crankshaft gear bolt to 135 N·m (100 lb ft) plus 30 degrees and plus 10 degrees using KM-470-B .


    Object Number: 1758531  Size: SH
  11. Install the timing belt automatic tensioner.
  12. Tighten
    Tighten the timing belt automatic tensioner to 25 N·m (18 lb ft).


    Object Number: 1758604  Size: SH
  13. Install the camshaft gears. Refer to Camshaft Gear Replacement .
  14. Install the timing belt. Refer to Timing Belt Replacement .
  15. Connect the negative battery cable.