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  1. #1
    Low Profile
    Join Date
    Sep 2020
    Kansas City, MO
    Thanked 20 Times in 17 Posts

    Brake line failure

    I wanted to put this out there as a sort of public service announcement. The left front brake line failed on my 08. It's got 170,000 miles and while the bottom of the truck is a little rusty, it's all cosmetic. It's definitely not a northern rust bucket. The crimp completely disintegrated underneath the rubber isolator. I cut the isolator off the passenger side and it was in the same condition. The new GM brake lines don't have this rubber part.

    I noticed it took a little more pedal travel to stop when I was getting off the freeway. I pulled over and saw the line was wet. Fortunately it was a pinhole leak. But it could have been really bad if it had failed in a real panic situation.

    I replaced every rubber hose on the truck after that. My 09 is going to get a full set when I put it up to change the leaf springs.

  2. The Following User Says Thank You to Jeff V. For This Useful Post:

    Bowser-II (11-01-2020)

  3. #2
    El Diablo
    Join Date
    Sep 2011
    Thanked 3,562 Times in 1,801 Posts
    Glad you didn't have a serious issue.

  4. #3
    Super Swamper
    Join Date
    Jul 2012
    Thanked 404 Times in 336 Posts
    Glad you caught it! That happened to me a few months back on my 09 while going 60+. First the pedal was weird, then no brakes. Was lucky the road wasnt busy and used air resisrance and the ebrake to slow me down. The hose blew on the passenger side at the same area.
    I think by now everyone should look into replacing those hoses

    Sent from my SM-G960F using Tapatalk
    06 H3, Birch White, Lux , Cooper AT3 35s, Borla Performance Cat-back, Bilsteins front w/ 1/2" extended stops, Hunner sleeve, Air Doc w/ K&N filter, Oem Roof lights, 55W HID Headlights and 35W Fog lights.

    09 H3 V8, Arctic Silver, LS376/480 Conversion, 3000 stall, Custom E-fans, 37" KM3 tires, XD Rockstar Wheels 17x9, OEM Sliders, 40K External Trans Cooler, Bilstein 5160s front 5100 rear, O.D. Steering Bracket, 2" Body Lift, Custom Exhaust, Custom intake pipe & K&N filter, Custom PCM tune, Pioneer DVD unit, Aurora 40" LED Light Bar, 50 W HID Headlights

  5. #4
    Low Profile
    Join Date
    Jan 2018
    Thanked 47 Times in 35 Posts
    Quote Originally Posted by amrg View Post
    I think by now everyone should look into replacing these hoses
    Mine look fine but I already have them ordered for my next brake job. I would rather spend the money now than not being able to stop and plow into someone if it ever decides to blow randomly.

    "Hit it with your purse!"

  6. #5
    Join Date
    Sep 2011
    United States
    Thanked 255 Times in 171 Posts
    Similar thing happened to me as well. There was no outward sign anything was out of the ordinary with the hose. Mine was also an '08 left front.
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