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Message: <blockquote data-quote="stutaeng" data-source="post: 26683" data-attributes="member: 6175">I've never had a brake hose collapse on me. On my 99 a long time ago my mechanic was doing some work and left too much slack on the front brake hose and it rubbed on the inside of the rim to where it leaked. He replaced that hose. Otherwise they are all original.I did replace the front brake hoses on my 06 suburban. One side had a fray, but after I replaced them, it was just the outher boot protector that was frayed. Oh well...I took the oportunity to suck out all the old brake fluid, put new fluid and flush all 4 wheels. That's one job I'd always shyed away from as a DIYer. Wasn't even that difficult tbh. Then also dud new brake fluid on my 99 and our 13 Chrysler minivan as well.My Pop's got an 88 Sierra, and I'll have to ask him, but I'm sure he's never replaced brake hoses. I believe he bought that truck around 2000.I would replace the brake hose first. They aren't that expensive. But if you are in the rustbelt, may be a good idea to go ahead and get a pair of replacement calipers. Or at the least, remove your existing caliper pins, inspect, lubricate and install new rubber bushings. Also strongly consider fresh brake fluid, and bleed all 4 wheels to get the old fluid out.Brake fluid has a service life of 50-75k miles, but I don't think most folks ever replace it. I certainly didn't (until recently that i learned as previously mentioned) and all my trucks are well past the 200k mark.</blockquote>