Recently my son changed the rear brakes and a mechanic change the front ones on my 2000 Montana. Since then, I have had low pedal pressure and it sounds as though there is air in the line. the resevoir is full. Can the lines be bled easily? A mechanic was $80 - $100 to do this. Also just last night my Service Traction Contral dash light and the TCS Off light came on and when i press the brake pedal my turn signal indicator lights on the dash light up. please help decipher the issue here and if this is something i can take care of without a mechanic. even though i am a female, i do as much work on my own, as mechanics are very expensive these days!