GM Service Manual Online
For 1990-2009 cars only

Special Tools

KM-422 Installer

Removal Procedure

  1. Remove the camshaft intake and exhaust sprockets. Refer to Camshaft Intake Sprocket with Actuator Replacement and Camshaft Exhaust Sprocket with Actuator Replacement.

  2. Object Number: 2049386  Size: SH

    Note: Extremely take care of contacting of camshaft surface. If damaged on the camshaft surface, engine oil could be leaked.

  3. Remove the camshaft seal ring (1).

Installation Procedure


    Object Number: 2049386  Size: SH

    Note: Do not reuse the camshaft seal ring.

  1. Install the camshaft seal ring (1) with new one.

  2. Object Number: 2049387  Size: SH
  3. Install the KM-422 installer  (3) with shims (2), with a total thickness of approximately 10 mm and tighten the camshaft bolt (1) manually.
  4. Remove the KM-422 installer .
  5. Install the camshaft intake and exhaust sprockets. Refer to Camshaft Intake Sprocket with Actuator Replacement and Camshaft Exhaust Sprocket with Actuator Replacement.