GM Service Manual Online
For 1990-2009 cars only

    Object Number: 1345244  Size: SH
  1. Inspect the 1st clutch (715) and the coast clutch (712) pistons to include each piston's check valve. If the clutch piston's check valve is stuck, falls out of the piston or otherwise damaged, replace the clutch piston.

  2. Object Number: 1345401  Size: SH
  3. Verify that the coast clutch piston spring washer plate (711) is staked to the coast clutch piston (712). If not, replace the coast clutch piston assembly.

  4. Object Number: 1347644  Size: SH
  5. Check the clutch piston spring retainer cap (709) and retaining ring (708) for wear or damage.

  6. Object Number: 1347645  Size: SH
  7. Inspect all of the steel clutch plates (703) and (707), clutch fiber plates (702) and (706), and clutch backing plates (701) and (705) for the following:
  8. • If the clutch steel plates are worn, damaged or severely discolored, replace the plates as a complete set.
    • If the clutch fiber plates are worn, damaged, or discolored, replace the plates as a complete set.
    • If the 1st clutch (701) or the coast clutch backing plate (705) is worn, damaged, or severely discolored, inspect the clutch backing plate-to-top-disc clearance, then replace the clutch-backing-plate making sure to use the correct selective size backing plate.