It is already understood that Grenades cannot attack Vehicles with Immune to weapons of maximum rank 1. Now if I use Captain Rex's command card called Take That, Clankers!! In a unit with grenades, it is at range 1 of a T-47 but when I do the AIM token action I can attack with the grenades since its range is supposed to increase to 2.
Thank you very much, I will be attentive.