GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2009 🢒 Sierra Denali 🢒 Transmission 🢒 Automatic Transmission - Allison 🢒 1-2-3-4 Clutch Steel Plate Inspection

    Object Number: 1217093 Size: SH

    Important: 

       • Measure as described below at a minimum of 3 locations.
       • Replace any 1-2-3-4 clutch steel plate that does not meet specifications.

  1. Measure the thickness of each 1-2-3-4 clutch steel plate (1) at dimension A.

    2. Specification
    The 1-2-3-4 clutch steel plate minimum thickness is 2.135 mm (0.084 in).


    Object Number: 1217128 Size: SH

    Important: Check the plates for coning on a level surface.

  2. Measure the cone of each plate (1) at dimension A.

    3. Specification
    The 1-2-3-4 clutch steel plate maximum cone is 0.200 mm (0.0079 in).