Had issues with the brake light coming on intermittently on my Camaro. After a couple day’s sitting, I noticed a puddle under the driver’s door. Looked up, and found this:
This is the section of the rear brake hard line, from under the driver’s door. Rusted clean through - wound up cutting it out and patching the line until I got the whole thing replaced. Never seen one rust through before - and I’ve kept some cars a long while.
Oh, and BTW - bleeding this thing’s a pain in the a$$. ABS module, then calipers, then ABS module again. All to find out I had a bubble in the master cylinder, too. Must have gone through three bottles of brake fluid to do it. Plus, the line’s 1/4", rather than 3/8". Ugh.