[george kujanski]

I've got this Yukon and a few weeks ago the rear line rusted thru and leaked.

Looking underneath I found that the rear line comes from the ABS controller which is mounted to the left inside frame rail under the driver seat. 4 lines come from the front, master front line master rear line, and the two front lines, and a single line goes to the rear.

They were ALL rusty and fragile, some showed signs of minor leakage. This sucker is mounted up under there, practically impossible to work on without dropping the entire controller and doing some innovative bending. I needed to remove the OEM running board to even see the tube routing.

It baffles me why GM chose this mounting location for the ABS controller, my other cars have it under the hood, the Yukon has more space under hood than any of the other cars.....they obviously mounted to the frame first, then set the body on it.

The first pic shows the ABS controller with the brake lines attached.

Since i needed to replace everything, I decided to move the controller under the hood, gaining better access, shortening the line and electrical harness in the process.

I added some brackets to the bottom of the controller bracket, also cutting off the existing mounting ears from the controller bracket and mounted it to the top and outside of the left frame rail.

i used the nickel-copper alloy tubing rather than steel, for obvious reasons. This is the first time I used this stuff and it is a pleasure to use, bends and forms easily.

A while back I bought a hydraulic universal flaring tool, expensive, but well worth the price, flared all the joints effortlessly and flawlessly, no leaks.

The next pics show the mount on the frame and close-ups.

Messy, long job, replaced the hoses, front rotors, rear axle hose, tubing to each rear wheel etc. might as well have everything new. I don't ever plan on doing this again.

I could have left it where it was, but forming the lines into that tight spot would be a real pain, plus if the ABS ever needed R&R, it would be painful, AGAIN.

So, those of you with the same age vehicle, check under there and coat those lines to keep them from rusting away.

George