Spartan Motors is recalling 95 2013-2015 model-year Gladiator, as well as 2011 and 2013-2014-MY MetroStar, emergency vehicles equipped with a pressure governor or hand throttle supplied by Fire Research Corp.

The software controlling the pressure governor or hand throttle might cause an engine surge. This in turn could trigger a water pressure surge at the end of a fire hose, increasing the risk of personal injury to firefighters, the National Highway Traffic Safety Administration reported.

The recall covers fire trucks manufactured from June 15, 2011, to Jan. 14 of this year.

To remedy the problem, Spartan dealers will install a software update free of charge. The recall is expected to begin this month.

Vehicle owners can reach Spartan customer service at 1-517-543-6400. Spartan's number for this recall is 14013.