Participation, association (used in a negative sense).
Don't have any truck with that fellow.
Don't have any contact (business) with that fellow.
'Trucail' - a cart, a sidecar. (Dinneen). Note 'With whom we trafficked and trucked'. (Alex the Coppersmith). 'Avoid dealing with'. (Concise Oxford Dictionary). 'Truck' - exchange, business trade. (Wright).