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Showing results for tags 'Master cylinder'.
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I'm hoping someone can help me with this mystery. I cannot figure out what is causing my brakes to engage or rather not "disengage" after about 10-15 minutes of driving around. When the issue occurs, It starts off slowly with a slight sensation that the truck is suddenly pulling a heavy trailer, but then steadily becomes worse the further I go, eventually having to floor the gas to pull over safely off to the side. In the short term, If I pull over and pump the brake pedal a few times and start driving again it seems to fix the problem but only for a short while before it happens again. I have an OBD2 reader but it doesn't grant diagnostic data for brakes. I do have a live data read out of everything while the occurrence happens and would be glad to provide it if someone is able to use that info to narrow down a conclusion. When the issue happens, I can just let off the gas and the truck will come to a stop without needing to apply the brake. The feeling as if you're going through thick mud. I changed my brake pads about 3000 miles ago, so I don't see a correlation to my DIY brake job being the cause. The truck has 56K miles. Things that I've done so far: Replaced the Brake sensor control switch (code was thrown that mentioned Stabilitrak (it led me down a rabbit hole) (pain in the F'ng ass) - Still have issue. Took the calipers off and greased the pins. thought they might be getting stuck. - Issue is still present. Update: 01/20/2024 Replaced both front wheel hub assembly Added new brakes, Rotors, calipers Issue is still present. My next step would be to replace both the front calipers. <-- NOPE. I feel like I'm guessing at this point and the cause could be a Master Cylinder, Brake booster, Solenoid, bad brake fluid or lines. And to add, I have conspiracy monkeys in my head telling me it's all still related to the faulty GM vacuum pump issue. All this to say, if someone has dealt with a similar issue in the past and figured out the cause I would be grateful to hear from you. Past service history: Service Performed: 28K miles: Electronic Brake Control Module Reprogramming with SPS AIR CONDITIONING CONDENSER REPLACEMENT Vacuum Pump Replacement Power Steering Control Module Reprogramming with SPS Service Performed: 11K miles: SDM PROGRAM (@11,000 miles) Transfer Case Shift Control Module Reprogramming with SPS -
I own a 04 chevy silverado 1500. The brakes are spongy ( I've bleed them throughly, new everything except booster and master). My work trucks brakes are great 06 Sierra 2500 hd dual piston calipers all the way around same pads as the ones in my chevy. The question is can I upgrade to a dual piston the rear? They currently have the wimpy single piston. If an upgrade is possible do I need to upgrade the Master cylinder to accommodate the extra volume? If so can I just order the 2500 hd master cylinder?
