GM Service Manual Online
For 1990-2009 cars only

Tools Required

EN 46330 Timing Belt Tensioner Retaining Pin

Removal Procedure

  1. Remove the timing belt. Refer to Timing Belt Replacement.

  2. Object Number: 1336939  Size: SH
  3. Remove the bolts (7).
  4. Remove the tensioner (6).
  5. Remove the bolt (1), tensioner pulley assembly (2) and bushing (3).
  6. Remove the nut (5) and pulley (4).

Installation Procedure


    Object Number: 897058  Size: SH

    Notice: Do not exceed 9 800 N (2,200 lb) when compressing the rod of the tensioner or component damage may occur.

  1. Using a hydraulic press, slowly compress the tensioner.
  2. Insert the EN 46330 through the housing and rod.
  3. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 897060  Size: SH
  4. Install the tensioner (252) and bolts (251).
  5. Tighten
    Tighten the bolts to 12 N·m (106 lb in).


    Object Number: 1336939  Size: SH
  6. Install the bushing (3), tensioner bracket (2) and bolt (1).
  7. Tighten
    Tighten the bolt to 25 N·m (19 lb ft).

  8. Install the pulley (4) and nut (5).
  9. Tighten
    Tighten the nut to 80 N·m (59 lb ft).

  10. Install the timing belt. Refer to Timing Belt Replacement.