I know that p0703 is a brake switch sense circuit, but i have no clue what this means, where its located, or how to fix it. And p1784 is l-r pressure sense circuit, no idea what this means, or how to fix it....I need some help figuring out if its going to be worth my time to fix before i start dishing out money.

 

You would start with doing a google search on those P codes and see what they mean so you have a better understanding of what is entailed.

The brake switch is on the brake pedal

The L-R pressure switch is located in the solenoid pack bolted to the transmission