GM Service Manual Online
For 1990-2009 cars only

    Object Number: 20178  Size: SH
  1. Remove the ten channel plate bolts (8 and 25).
  2. Remove the channel plate assembly (27). Keep the following components with the channel plate:
  3. • The drive sprocket to channel plate thrust washer (34)
    • The three accumulator pistons (29)
    • The manual valve (800)
    • The detent lever spring (804) and bolt (805)
  4. Remove and discard the channel plate to case gasket (28).