Does gm motors diet program work?

GM Motors diet program is 1 week plan,which helps one to loose 2-3 kgs.This plan is basically a crash diet plan,in which diet comprises of fruits,boiled vegetables,chicken,salads,brown rice and vegetables.In this diet plan though weight loss is fine but the body gets devoid of many essential nutrients in the whole week.Many a times some side effects like hair loss,fatigue have been reported.