Input Shaft Identification
WARNING: This page is about a different car, the 2023 GMC Sierra 3500 HD and 2023 GMC Sierra 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
The first design input shaft can be identified as a 56 tooth design with an outside diameter (a) of91.4 mm (3.60 in) and two oil drain holes 180 degrees apart.
The second design input shaft can be identified as a 53 tooth design with an outside diameter (a) of87.50 mm (3.44 in) and three oil drain holes120 degrees apart.