An actuator assembly driven by a fluid for actuating a component of a transmission, said assembly comprising: a housing defining an interior and a longitudinal axis; a divider disposed within said interior and dividing said interior into first and second chambers (25, 27); a first piston disposed within said first chamber and movable along said longitudinal axis; a second piston disposed within said second chamber and movable along said longitudinal axis; a shaft extending through said divider and engaging said first and second pistons (28, 30), with said first and second pistons (28, 30) and said shaft movable together as a unit along said longitudinal axis from a first pressurized position to a second pressurized position; wherein said housing defines at least one port fluidly connected with said first and second chambers (25, 27) for providing the fluid into and out of said first and second chambers (25, 27) such that said port provides the fluid to said first and second chambers (25, 27) between and including said first and second pressurized positions with the fluid pressurizing against both of said first and second pistons (28, 30) and moving said first and second pistons (28, 30) and said shaft as a unit from said first pressurized position to said second pressurized position; wherein said housing defines a passageway fluidly connected with said port; and wherein said first piston divides said first chamber into a pressurized portion of said first chamber and a non-pressurized portion of said first chamber on opposing sides of said first piston, wherein said first piston has a first pressure surface facing and partially defining said pressurized portion of said first chamber, and said second piston divides said second chamber into a pressurized portion of said second chamber and a non-pressurized portion of said second chamber on opposing sides of said second piston, with only said pressurized portions (56, 68) of said first and second chambers (25, 27) fluidly connected with said passageway for selectively filling and emptying said pressurized portions (56, 68) with the fluid; characterized in that said passageway opens into and is fluidly connected with both of said first and second chambers (25, 27). a housing defining an interior and a longitudinal axis; a divider disposed within said interior and dividing said interior into first and second chambers (25, 27); a first piston disposed within said first chamber and movable along said longitudinal axis; a second piston disposed within said second chamber and movable along said longitudinal axis; a shaft extending through said divider and engaging said first and second pistons (28, 30), with said first and second pistons (28, 30) and said shaft movable together as a unit along said longitudinal axis from a first pressurized position to a second pressurized position; wherein said housing defines at least one port fluidly connected with said first and second chambers (25, 27) for providing the fluid into and out of said first and second chambers (25, 27) such that said port provides the fluid to said first and second chambers (25, 27) between and including said first and second pressurized positions with the fluid pressurizing against both of said first and second pistons (28, 30) and moving said first and second pistons (28, 30) and said shaft as a unit from said first pressurized position to said second pressurized position; wherein said housing defines a passageway fluidly connected with said port; and wherein said first piston divides said first chamber into a pressurized portion of said first chamber and a non-pressurized portion of said first chamber on opposing sides of said first piston, wherein said first piston has a first pressure surface facing and partially defining said pressurized portion of said first chamber, and said second piston divides said second chamber into a pressurized portion of said second chamber and a non-pressurized portion of said second chamber on opposing sides of said second piston, with only said pressurized portions (56, 68) of said first and second chambers (25, 27) fluidly connected with said passageway for selectively filling and emptying said pressurized portions (56, 68) with the fluid; characterized in that said passageway opens into and is fluidly connected with both of said first and second chambers (25, 27).