Rear brake line replacement part needed

I could not find a direct replacement from GM.

Is this a metal line or a hose? (the pics they show are of poor cartoon quality)

I found this readily available in aftermarket:

https://shop.advanceautoparts.com/p/carquest-wearever-brake-hydraulic-hose-bha38658/18650370-P?searchTerm=brake+hoses+%26+lines

If this is a steel line. The pieces that make it up may be easily found at an auto parts store, a brake mechanic might assemble and bend it to replicate the original. He would have the tools, saving you from buying them too.

And then there is the auto salvage yard option, find a good used one.

Keep us posted with progress.

The Medic

This may sound.

"different"

Other than a salvage yard.

Maybe a used car lot, a tape measure, your phone camera, and of course a willing "sister car".

You could also wait for an owner to reappear at their car after shopping in the parking lot.

So we're talking maybe a couple of minutes of someone thinking we are weird! I too have been in similar situations!

I've even provided a brick for them to drive up on, and a floor jack on another occasion in order to see under a car!

The Medic

About the only place any measurements would be is in the original factory that made those pipes, Those would be in code for the automated pipe bender that made them by the thousands. Once they are made in the number they need plus a few spares they get filed away. Other than very early in a vehicles life nobody uses an OEM line for repairs. It's just faster and easier to buy 50 foot coils of line and the fittings and bend a new line to fit. That way you can get a vehicle in and out in a couple hours instead of waiting for the parts.

Inline Tube makes a complete metal line set for a Saturn 2000 SL1 for
$120.00 in steel.

https://www.inlinetube.com/products/slb0002

or

$140.00 in stainless.

https://www.inlinetube.com/products/sslb0002

They bend them to order so you have to wait for that plus shipping.

Either route you will want to be sure you can get the other parts free to complete the job. For instance you go to remove the flexible line from the end of a steel line and it is rusted in so bad it damages the rubber line, now you need it, or because you will need to bleed the brake system you need to free up all the bleeder valves. Where I am you can expect that to be a miracle after about 3 years. So you may need to replace the calipers or wheel cylinders. So I would start going through those parts now to be sure of what you need. Then you can decide to either order that kit or make them yourself.

OOPs missed you had the LS not the SL Sorry about that. Inline doesn't show the LS neither does Dorman, likely it wasn't as popular as the SL series. However all is not lost, You still want to break the other parts free and be sure of what you need. Then simply bend up a line to fit. To get the correct length I use a tailors tape and follow along the line from fitting to fitting. Then add an inch or so. Now visit the local parts store and get a straight section of line with the line nuts on it, just get the closest length you can but not shorter. Then bend it to fit in place. If they have the line in Nicopp get it, that is a lot easier to bend into shape and it doesn't rust.
This is a pretty good video on the process:
https://www.youtube.com/watch?v=bqyoTWFZ5K4