A 2015 Chevrolet Equinox equipped with the 3.6-liter engine and GM 6T75 transmission has complaints of a delayed engagement into drive and slips in first gear.
A generation one 1-2-3-4 Clutch Apply Piston was installed into a generation two transmission. The generation two 1-2-3-4 Clutch Apply Piston apply fingers are .147 in. taller than the generation one piston. This created too much clutch clearance for the clutch pack to effectively hold.
The generation one 1-2-3-4 Clutch Apply Piston apply finger height is .638 in.; refer to figure 1, above.
The generation two 1-2-3-4 Clutch Apply Piston has a apply finger height of .785 in.; refer to figure 2. For generation two, the 1-2-3-4 friction were reduced in thickness to .058 in. Generation one 1-2-3-4 friction plates are .061 in. thick.
Generation two components were used selectively with the start of the 2013 model year. All 2014 and later models should have generation two components.