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  1. #1
    Jr. Mechanic Knucklehead's Avatar
    Join Date
    Apr 2009
    Elizabeth city NC , originaly from chesapeake VA

    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


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


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

  3. #3


    check your speed sensors

  4. #4


    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
    Join Date
    Jul 2008
    Leeds, Alabama


    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
    Join Date
    Apr 2009
    Elizabeth city NC , originaly from chesapeake VA


    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


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

  8. #8

    Join Date
    Feb 2008
    Red Wing, Minnesota, United States


    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

  9. #9


    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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