I have an 04 LB7 4x4 and the service brake system light came on. I noticed that my pedal was really spongy and saw that the driver side brake caliper had been leaking for a while. I changed the caliper and bled the brakes. Light stayed on then went back off. The next day light came back on and I noticed a hose from the hydroboost to the power steering pump was leaking. I replaced the hose and made sure the fluids were topped off after running. I got a little firmer brake pedal and it seemed to drive good. Today start the truck and the light has come on again:cookoo::help can anyone help me figure out what's going on with this thing. I've only had it about a week and already tempted to get my dodge back lol. Thanks guys!!