well i live in mount pleasant /Isabella County . and i can tell you the sheirff dept cars are 37** numbers
and iam not sure how well you pick up the city pd . but the city pd units are 2**. and the cmu
pd units are numbered as 5**. and sherman town ship has its own pd. and there units go by
sherman one or sherman two . if both officers are working . but sorry to say iam not sure on the
Gladwin County police unit #'s. but hope this helps you tho
