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Reverse Reaction Drum: Inspection

    NOTE: This step has been revised due to ATRA TSB No. 579, dated November 2000.
  1. Inspect for damaged 2nd clutch and reverse reaction drum splines. Original 2nd clutch and reverse reaction drums have splines with 25-degree sides and have tendency to strip. New design 2nd clutch and reverse reaction drum kit (GM P/N 24213402) have splines with 10-degree sides.
  2. Inspect reverse reaction drum for cracks, damaged splines or distortion. See Figure. Replace drum if necessary.
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