A snow groomer vehicle comprising: a frame (2) extending along a longitudinal axis (70); a tiller assembly (9) connected to the frame (2) by a connecting device (21), preferably the tiller assembly (9) comprising a tiller (9a) and a finisher (9b); at least one control device (17) coupled to the tiller assembly (9) and configured to control at least two parameters of the tiller assembly the control device (17) comprising a memory configured to store at least two groups of values (N, M), preferably four groups of values (N, M, P, Q), relating to the at least two parameters (A, B), wherein each group of values (N, M) includes at least one value for each of the at least two parameters (A, B); the control device (17) being configured to receive the selection of a group of values of the at least two groups of values (N, M) and control the at least two parameters of the tiller assembly (9) according to the values of the selected group of values (N; M).

A snow processing device for a snow tiller has at least one fastener to attach the processing device to the snow tiller at a pivot axis between two adjacent rotors of the snow tiller; and at least one tooth fixed to the fastener and configured to harrow the snowpack at the pivot axis.

A snow processing device for a snow tiller has at least one fastener to attach the processing device to the snow tiller at a pivot axis between two adjacent rotors of the snow tiller; and at least one tooth fixed to the fastener and configured to harrow the snowpack at the pivot axis.