so your saying that your steering servo and your throtle servo are not working? If they both are not working I would have to say either your reciver is shot or by some odd chance both of the servo leads are unpluged or damaged in some way. if it's just the steering thats not working and you can here the servo moveing when you turn the wheel on the radio then I would say the gears are shot in the servo wich is common in the stock servo they are plastic and cant handle the big wheels