GM Service Manual Online
For 1990-2009 cars only

Special Tools

    • J 8001 Dial Indicator Set
    • J 7057 Dial Indicator Plunger Extension

For equivalent regional tools, refer to Special Tools.


    Object Number: 31061  Size: SH
  1. Attach the J 7057 plunger extension (not visible in the illustration) to the J 8001-3 dial indicator .
  2. Using the J 8001-1 dial indicator clamp , mount the J 8001-3 dial indicator to the transmission case through the opening in the case barrel. Place the J 7057 plunger extension onto the direct clutch piston assembly.
  3. Index the J 8001-3 dial indicator . Set the dial to 0.
  4. Apply 80 psi of air pressure to the direct clutch fluid passage (3rd/Reverse), in the case bottom, in order to actuate the direct clutch piston. Refer to Fluid Passages.
  5. Measure the direct clutch piston travel. The piston travel should be 1.27-4.369 mm (0.050-0.172 in).
  6. Remove the tools.