member 120 relative to the guide bracket 122 a return spring 132 is provided for biasing the sprag member 120 toward the guide bracket 122 a blocker pin 134 is provided for limiting movement of the guide bracket 122 as best shown in fig1 3 the guide bracket 122 includes a cam surface 136 and sprag member 120 includes an opposing cam surface 138 the cam rollers 116 of cam roller assembly 112 are received between cam surfaces 136 138 of guide bracket 122 and sprag member 120 respectively according to the present invention the activation rod 108 is attached to an actuation lever 140 which is pivotably attached to a gear train housing via pivot pin 142 lever 140 includes a first arm portion 144 attached to the activation rod 108 and secured thereto by a c clip lever 140 includes a second arm portion 146 supporting a cam roller 148 at an end thereof cam roller 148 engages a linkage cam member 150 which is rotatably mounted about pivot point 152 a spring 154 is connected between the first arm portion 144 of lever 140 and guide bracket 122 spring 154 biases lever 140 to rotate in a counter clockwise direction as shown in fig1 3 so as to maintain cam roller 148 in contact with cam 150 spring 118 is weaker than spring 154 so that spring 118 does not prevent cam roller 148 from maintaining contact with cam 150 during engagement of the parking sprag assembly linkage cam 150 is rotated from the position shown in fig1.