i have 03 monte carlo ss ....my brakes went out and i found it was due to brokrn brke line...i eed to prchase this before taking it to my mechanic....can anyone tell me what size i need to repace the line which is beneath the drivers seat

 

Your local NAPA store should be able to assist you with that or you can try rockauto . com they usually have all the information you need. Most of us on here would just be guessing for the proper size. Good luck.

 

If you are looking for factory, prebent lines, they are all discontinued. Most mechanics will just use a coil of line, flare the ends. I believe the line is 3/16 line for all the lines on the car. And you have both lines for the rear brakes traveling under the driver side. seat.