GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 1887944  Size: SH
  1. Locate the four locking tabs on the generator cover.

  2. Object Number: 1887947  Size: SH
  3. Using a screwdriver (3), carefully pry the generator cover locking tabs (2) in four places and remove the generator cover (1).

  4. Object Number: 1887948  Size: SH

    Important: Screw (1) is slightly shorter then the other four screws (2).

  5. Remove the 5 screws (1 and 2) that retain the voltage regulator (3) and the rectifier (4) to the generator.

  6. Object Number: 1887950  Size: SH
  7. Carefully lift up the rectifier (2) and remove the voltage regulator (1).

Installation Procedure


    Object Number: 1887952  Size: SH
  1. Depress the voltage regulator (2) brushes and insert tube (1) into the opening to keep brushes in the depressed position.

  2. Object Number: 1887954  Size: SH
  3. Install the voltage regulator (1) on the generator and ensure the battery ring terminal (2) is positioned on the battery stud.
  4. Remove the brush tube (3).

  5. Object Number: 1887955  Size: SH

    Important: Screw (1) is slightly shorter then the remaining 4 screws (2) and must be installed in the position shown.

  6. Install the 5 screws (1 and 2) on the generator.
  7. Tighten
    Tighten the rectifier and voltage regulator retaining screws to 3 N·m (26 lb in).


    Object Number: 1887965  Size: SH
  8. Snap the generator cover (1) into place.