Skill Level 1 Diagnoses and troubleshoots malfunctions, performs organizational maintenance, and on-board direct support tasks on the suspension systems, steering systems, hydraulic systems, auxiliary power units, fire extinguisher/suppression systems, gas particulate systems, vehicular mounted armament, gun turret drive system, and the fire control system on the M1/M1A1 tank.

Skill Level 2 Performs duties in preceding skill level, supervises lower grade soldiers, and provides technical guidance to the soldiers in the accomplishment of their duties. Diagnoses and corrects malfunctions of various subsystems, and performs on-board direct support tasks (i.e., major assembly replacement). Assists skill level 1 soldiers with troubleshooting and maintenance tasks on the M1/M1A1 tank.