master cylinder

  1. Breadwinner73

    91 LD k2500 Rear master cyl brake line

    Where can I find a brand-new line for my 1991 truck? It is a Vac booster truck. 5.7 tbi / 700r4. I don't have the $ to buy a whole kit... I just want this one. It is a light-duty 6-lugger K2500. I can only find lines for 1995 and later, which aren't the same. i have been told the swirl in the...
  2. wilburou812

    O.E.M. Brake Boost

    Hello, In search of an OEM NOS Brake Booster for my 1997 k3500. my research shows Bosch (0204777569) was original OEM provider of Part, Research from Rock Auto site. shows alt number (19371352) Unfortunately no longer in stock on there site. Even called Bosch and they no longer make nor had one...
  3. HGKx

    Low Speed ABS Activation?

    I know what you are thinking by the thread title... "It's your ABS sensor my guy..." But hear me out. I bought the truck with the ABS light on, then I changed both sensors up front. ABS light went away. Great! Now, on rare occasions... at low speed... the brake pedal, once depressed...
    • HGKx
    • Thread
    • abs abs bleed brake booster master cylinder
    • Replies: 11
    • Forum: Axles + Brakes
  4. 94FSblazer

    Brake help after nbs master cylinder upgrade (1994 chevy fullsize blazer)

    1994 Chevy full-size blazer (5.7 tbi OBD1). Recently did the nbs master cylinder upgrade. Grabbed a mc out of 2001 Tahoe with vacuum booster. After installing, bled the brakes and it is terribly squishy, worse than before. Dangerous lack of brake power. Was going to bleed again. But thought I’d...
  5. D

    Dirty Master Cylinder and Fluid

    Yesterday I couldn’t get my 1989 Silverado’s master cylinder to bleed. It appears to be original and the brake fluid had probably never been flushed. I have a new MC but didn’t get it installed today. I am including some pictures of the old master cylinder.
  6. G

    Brake upgrade help

    Ok guys, I need some help. I read all the info on the forums and went ahead with the NBS master cylinder upgrade. I have a 1988 GMC C1500 5.7, 700r4. I purchased Dorman M630031. I bench bled it and installed. I also installed all new brake lines in the front and rear, also replaced both rear...
  7. TwistedTahoe

    Touchy Brakes

    I've got a 99 Tahoe LT 4wd 4dr with 4 wheel antilock brakes (currently not working). When I press the brake pedal, nothing happens until the very end when the brakes grab violently. At low speeds my passenger rear wheel locks up. I went on Identifix and they say it's either a BPMV (Brake...
  8. Kimo

    Master cylinder and ABS Delete

    1989 Chevy OBS regular cab here and I am PERPLEXED. Here's my situation. I replaced the OEM Master Cylinder (MC) with a Little Shop Manufacturing MC in which the fluid reservoirs are opposite of OEM. i.e. Large is now in the front and the smaller one is now closest to the firewall. I also did an...
    • Kimo
    • Thread
    • abs delete little shop manufacturing master cylinder
    • Replies: 30
    • Forum: Axles + Brakes
  9. R

    '91 k2500 NBS master cylinder swap

    Question about NBS master cylinder swap: I have a '91 k2500, vacuum boost, disc/drum, 6 lug. Current MC needs replacing. Reading online, I need a master cylinder from an NBS of the same type of truck, correct? So I should get a master cylinder from a 2001 Silverado 2500 and it should bolt right...
    • ryanguy426
    • Thread
    • advice bore confused diameter master cylinder nbs obs
    • Replies: 11
    • Forum: Axles + Brakes

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