Volvo Trucks North America (Volvo) is recalling certain model year 2016-2017 VNL, VNX, and VNM trucks manufactured from May 11, 2015, through April 18, 2016. The trucks may have been manufactured without a roll pin on the steering shafts. If the roll pin is missing, the lower steering shaft may disconnect from the junction block. Also, the bolt connecting the upper steering shaft to the lower steering shaft may not have been properly tightened. Either condition can lead to separation of the steering shaft.