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  1. #1
    Jr. Mechanic Knucklehead's Avatar
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    Elizabeth city NC , originaly from chesapeake VA
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    Default 1990 Suburban brakes

    My Suburban has recently started pulling to the left during braking, well the steering wheel turns , not so much the truck. So my first step was to change the calipers, and the problem is still there. The tires pressure is correct , theres plenty of fuild pumping through the brake lines and the master cylinder seems to be working correctly. Also i noticed it seems like brake dust collects faster than i remember. I dont know if they are related problems , but any suggestions would be helpful!
    Life's short... Drive hard!:sign0011:


    1990 GMC Suburban 4x4 w/ jasper 355
    6" Skyjacker suspension lift w/ Interco Trxus sts 36 14.5s
    on Mickey Thompson classic rims, Edelbrock
    intake, K&N 14 x 4 filter, JBA shortys
    Magnaflow exhaust, Pioneer system with
    Dual 12 inch subs... The list goes on!

  2. #2

    Default

    Make sure that the floating pins are properly lubed and/or not frozen.
    Scott

    ΜΟΛΩΝ ΛΑΒΕ

    '94 Chevy Suburban K1500
    3" exhaust w/ aero turbine non-baffled muffler
    CFM Technologies TB spacer
    CB w/ 44" whip antenna


  3. #3

    Default

    check your speed sensors

  4. #4

    Default

    Check the front brake lines to make sure they arent expanding under pressure, this happens a lot on lifted trucks.

  5. #5
    Master Mechanic CarpenterGuy's Avatar
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    Jul 2008
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    Default

    did you change the rotors with the calipers?
    2006 Silverado Z71 - 97,000 - totaled, RIP
    2006 Silverado Z71 - 122,000 (K&N 77 Series CAI, PowerAid TBS, Magnaflow dual rear exit, 33x12.50 Mickey Thompson MTZ, Tuff Country Torsion Keys, Tuff Country Add-A-Leafs)
    1966 C10 swb stepside (Gen I 350, Turbo 400 trans, dual cyl power brakes, front discs)
    I'll keep my money, guns, and freedom. You keep the Change.

  6. #6
    Jr. Mechanic Knucklehead's Avatar
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    Default

    Quote Originally Posted by CarpenterGuy View Post
    did you change the rotors with the calipers?
    Sorry it took so long to get back , yes about a week after i posted and its still the same story , im thinking the brake lines, although there is no visual defects i understand that they can deteriorate from the inside first.

  7. #7

    Default

    Well, can you tell us what you found to be the problem?

  8. #8
    Legend

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    Feb 2008
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    Red Wing, Minnesota, United States
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    Default

    Just get full steel braided brake lines, better in heavy braking and no expansion of the lines either, they are woth the extra $$. Also even an alignment/tire balance can cure brake pull
    99 K1500 Suburban LT "THE BEAST"
    Hypertech III, K&N, true dual
    285/75/16
    ___________________________
    Jason

  9. #9

    Default

    Turns out my left front rubber brake line was expanding, causing the RF brake to pull the truck to the right. What a PITA conencting the LF steel brake line to the proportioning valve,,, should have taken 15 minutes to replace the lines, took me 2 hours and alot of frustration. but the truck brakes straight now. So it's on to the next step WVO conversion.

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