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  1. #1

    Question Need help figuring out my brake line size?

    Hey guys, the title is kinda self explanatory haha.
    88 Chevy C1500 Silverado Regular Can Long Bed.
    Gross Vehicle Weight: 5600.
    ...yeah i have a leak in case you were wondering haha. :/
    Thanks!
    1988 Chevrolet C1500 Silverado 5.7 350 Reg Cab Long Bed
    15X8 Pro Comp wheels ready for mounting (need new tires) Spectre air filter. More mods coming soon.
    106K on the odometer as of now.

  2. #2

    Default

    Wish they had a diagram with this catalog.

    http://www.gmpartsclub.com/parts-cat...s/front-brakes

    Steve
    10 Chevy Traverse LT AWD
    02 Chevy Trailblazer LS (110K+ miles - loaded except for 4WD - WRECKED!)
    99 Chevy Cavalier LS (105K+ miles - commuter car)
    78 Chevy Suburban Silverado (454, 3/4 ton)
    62 GMC 3/4 ton Pickup (350 police interceptor)

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  3. #3

    Default

    This information was found using that part number on s different site.

    **********

    : BRAKE SYSTEM,HYDRAULIC POWER DISC,DRUM HYD PWR DISC/DRUM BRK(JB8); BRAKE SYSTEM,HYDRAULIC POWER DISC,DRUM HYD PWR DISC/DRUM BRK(JD 5 ); BRAKE SYSTEM,HYDRAULIC POWER DISC,DRUM(DIESEL ENGINE)(ROTOR=11.86"X1.2 HYD PWR DISC/DRUM BRK(JD 5 ); BRAKE SYSTEM,HYDRAULIC POWER DISC,DRUM(DIESEL ENGINE)(ROTOR=11.86"X1.29",REAR BRAKE SHOE=11.15"X2.75") HYD PWR DISC/DRUM BRK(JD5); BRAKE SYSTEM,VACUUM POWER DISC,DRUM VACUUM PWR BRK SYS(JB5)

    **********

    Steve
    10 Chevy Traverse LT AWD
    02 Chevy Trailblazer LS (110K+ miles - loaded except for 4WD - WRECKED!)
    99 Chevy Cavalier LS (105K+ miles - commuter car)
    78 Chevy Suburban Silverado (454, 3/4 ton)
    62 GMC 3/4 ton Pickup (350 police interceptor)

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  4. #4

    Default

    Sorry. That doesn't give much info. I'm still looking.

    Steve
    10 Chevy Traverse LT AWD
    02 Chevy Trailblazer LS (110K+ miles - loaded except for 4WD - WRECKED!)
    99 Chevy Cavalier LS (105K+ miles - commuter car)
    78 Chevy Suburban Silverado (454, 3/4 ton)
    62 GMC 3/4 ton Pickup (350 police interceptor)

    Remember: Search Before Posting | Fill out Your Profile & Signature
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  5. #5

    Default

    Oh ok then.
    1988 Chevrolet C1500 Silverado 5.7 350 Reg Cab Long Bed
    15X8 Pro Comp wheels ready for mounting (need new tires) Spectre air filter. More mods coming soon.
    106K on the odometer as of now.

  6. #6

    Default

    Quote Originally Posted by Jonezee View Post
    Oh ok then.
    Are you having an issue finding the leak? I usually fill the master cylinder and than have someone press the pedal. Leaks usually shoot out of the line. If you can not find it at a line, then check the front calipers and finally, pull the srums off the rear and look at the wheel cylinders. If none of those are the culprit then take a look at the master cylinder paying particular attention to where it mounts to the brake booster. See if there is fluid running down the front of the booster. If that is not it then grab a flash light and crawl under your dash. I have seen master cylinders leak internally and then leak back thru the booster. So, look at where the rod goes from the pedal to the booster. See if fluid is leaking from the booster into the truck.

    1995 Silverado 4x4
    6" BDS Suspension Lift-3" Body Lift-Add A Leaf in rear -Trailmaster SSV Shocks-Duel Steering Stabilizer Kit -AirAid Cold air intake-
    4.56 Gears with Detroit Auburn Locker-Pro-Comp Traction Bars with duel shocks-Aluminum Skid Plate Kit-38.5" x 16.5" Mickey Thompson Baja Claws-Constant Dropping fuel gauge

    2005 Yukon XL Jet Power Programmer, Bilstein Shocks, Bilstein rear springs, Helwig Anti-sway bars, EGR Window Visors, EGR Hood Shield, Denali Headlights, Headlight harness upgrade, GE NightHawk Bulbs, White Night Rear lighting system, Russell Braided SS brake lines, PowerStop Brake pads, PowerStop cross drilled and Slotted Rotors, http://www.gmtruckclub.com/forum/sho...5-GMC-Yukon-XL
    2002 Silverado ext cab 2wd (Sold)
    2003 Yukon XL (Totaled)

  7. #7

    Default

    If I let the truck sit for 30 mins or more I guess, on pavement, then brake fluid shows up on the ground along the underside of the driver side of the truck.
    I got it inspected a couple weeks ago and that's where I finally found out one of the brake lines is leaking.
    1988 Chevrolet C1500 Silverado 5.7 350 Reg Cab Long Bed
    15X8 Pro Comp wheels ready for mounting (need new tires) Spectre air filter. More mods coming soon.
    106K on the odometer as of now.

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