GM Service Manual Online
For 1990-2009 cars only

    Object Number: 749742  Size: SH
  1. Remove the E-clip.

  2. Object Number: 749743  Size: SH
  3. Disassemble the third gear band servo piston assembly.

  4. Object Number: 749744  Size: SH
  5. Measure the free length and the outer diameter of the outer and inner third gear band servo piston springs. Refer to 3rd Gear Band Servo (B4) Return Springs in Transmission Clearance Specifications .