GM Service Manual Online
For 1990-2009 cars only

Special Tools

    • J 45166 Dial Indicator Extension Rod - 8 inch
    • J 45200 Dial Indicator Set

    Object Number: 749586  Size: SH

    Warning: Wear safety glasses when using compressed air in order to prevent eye injury.

  1. Using the same special tool setup used to measure the second clutch piston travel, relocate the dial indicator  J 45200 onto the second coast clutch piston and zero the dial indicator.
  2. Apply compressed air into the second coast clutch fluid passage (B1) and measure the piston stroke. Be sure the piston moves smoothly.
  3. Specification
    Second coast clutch piston bore stroke: 1.24 - 1.96 mm (0.049 - 0.077 in)

  4. If the piston stroke is out of specifications, ensure the clutch plates are assembled correctly and not worn.
  5. Remove the tools.
  6. Caution: Refer to Fastener Caution in the Preface section.

  7. Install the remaining M6 x 1.0 x 14.5 mm fluid pump cover bolt (231) into the hole where J 45166  (2) was located and tighten to 12 N·m (106 lb in).