You're right, take off old lines and put on new lines. I've done this twice in the last three years. My car and daughters van. It's harder than it sounds and very dirty work. Bending lines correctly takes some thought and planning. Expect at least one bleeder to break off so you'll be buying a caliper(s) or cylinder(s). There is usually one odd sized fitting so you will need to buy an adapter for that end. Look at the hoses while your under there. Good time to do them since you have to bleed the system again if they go bad soon after your done. Took about twelve hours on each vehicle, counting putting it up on jack stands, trips to parts store, bleeding, back on the ground and test drive. Cost about $150.00 for all brake parts each car. One caliper on mine, two calipers on hers. Start with the transmission lines, they are easy compared to brake lines. Should run you about $40.00 for those lines. If that doesn't discourage you, go for the brake lines. Put at least 3 quarts of tranny fluid in before you start the engine so you don't run the pump dry and ruin it. If you can do the flares, you can get rolls of tubing and ends cheaper than predone lines. Good luck

you should go to a garage and there you should replace your brake/transmission line. I live in Canada and can recommend you "Fountain Tire". Maybe they have this garage in your city. My favorite part about this place is that they offer best customer service and great prices !!!!!!!!!!!!!!

Brake lines have to flared at the ends. Either a double lap-flare or a bubble flare. Need special tools to do a bubble flare. And you'll need tight quarter bending tools.

http://ricksfreeautorepairadvice.com/bra...

Before you get all cranked-up you had better go to a Chevrolet Dealers parts counter to see of pre-formed brake lines are available. Transmission cooler lines usually are.

I would like to get any tips that can help me while replacing the transmission/brake lines on my 2003 Chevrolet Express 3500. To me it looks like they are just lines, get the parts and replace them. I don't think that there is much more to it. For the brakes i know i have to bleed it. Is there anything i should know or any tips? P.S. my van has no transmission/brake fluid, it all dripped out. Mechanic also quoted me a dreadful $750 job. Your tips/experience is valued, thanks in advance.