Dragging Brakes, MASTER CYLINDER FAULT #1 - BT-101A There has been a recent run of a particular fault in a new replacement part master cylinder. Hydro-boost brake systems are self-bleeding if there is no other problem in the system. We've tried to bleed them by just pumping the pedal and we've also used a vacuum pump system and still not a drop of fluid has come through the brake line. Best Answer: You should only have to bleed the right rear. hey guys i replaced rotors, calipers and hoses on my 87 2wd, the front brake reservoir (larger one) drained down to empty during the process of the job, the rear brakes were not touched. But if they do get very low, you might have this problem. He lost 2 brake lines yesterday, luckily he was just leaving work and not approaching a red light. The brake pedal will go to the floor and subsequent efforts to get a satisfactory brake pedal will fail. We replaced the broken brake line, added new fluid and bled the brakes for about an hour and there still seems to be air in the lines or something else because the brake pedal still goes to the floor. Turn the engine off and hold on the pedal, then bleed the brakes once more once the pedal sinks between 15-20 seconds. the old system had a rock hard brake pedal feel. You need to bleed the brakes it is a new car. Choose a Year for your Chevrolet Silverado 3500 HD 's Brake Master Cylinder. Fill the master then open all your bleed valves. Front resivoir looked clouded over, but upon opening I discovered a fluid that was the cloudy color of clear silicone, and the viscosity was more like 90 wt gear oil. If you're trying to get out of a sticky situation, you can gravity bleed the brakes. When I put them back on, I now have no front brakes whatsoever. The correct procedure for bleeding hydraulic brakes or clutch systems is as follows. He told me that he always opens the brake bleeder screw while retracting the pistons, and has never had to bleed the brakes afterwards. 44 problems related to service brakes have been reported for the 2003 Chevrolet Silverado 1500. Refer to Hydraulic Brake System Bleeding (Manual) Hydraulic Brake System Bleeding (Pressure). Below is a picture of a Shimano Deore M596 brake calliper before the pistons were reset and after to show you the difference. The problem with air is that it is compressible, while the fluid that goes in. Front wheels bled no problem. AutoZone Repair Guide for your Brakes Anti-lock Brake System Bleeding The Abs System base brake bleed is all that is required for most component replacements. After checking for a firm pedal, drive the vehicle above three miles per hour. Took it for a test drive, the "brake" light went out, and the brakes feel good. then let some one press the brake and hold it [do not pump] till you tighten them up. Bleeding method - 2 person, pumping/bleeding screws, and yes, we bled the MC first, didn't take it out at all so we didn't bench bleed it- but it was pumping brake fluid out. The back is straight axle, so there isn't any adjustment on it. 1995 chev silverado,how do you bleed the brakes putting on new calabers and wheel sensor on left front side. The truck is very rusty, and only has 47,500 miles on it. Conventional pedal pump method or standard pressure bleeding. Slowly depress and release the brake pedal. I replaced every brake line in the truck with stainless steel lines and replaced all the calipers too because they were rotted and the bleed screws disintegrated. The master cylinder does not automatically bleed the air out of the piston when you fill it, this has to be performed “on the bench”, in other words, out of the vehicle. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. Consumer had vehicle repaired once, cost was about $600. Bleeding method - 2 person, pumping/bleeding screws, and yes, we bled the MC first, didn't take it out at all so we didn't bench bleed it- but it was pumping brake fluid out. Labor costs are estimated between $70 and $89 while parts are priced at $17. I have a lot of VWs to care for, and one of the pains is bleeding the brakes. Drilled a pinhole through the frame, fed one end of the spring through and bent it over, then pushed the other end through the stock spring hole in the brake pedal linkage and bent it over. Why Your Old Chevy's Brakes Won't Bleed. When jacked up with the brake pedal pushed all the way down, the wheels still spin freely. Bleed all four wheels again using Steps 3-9. Is there anything special about bleeding the brakes on 1999 silverado 1500 after replacing the right front brake line. Lets start when the problem started occuring. Make sure the brake fluid reservoir does not run empty while bleeding the brakes. How are you bleeding the brakes? As in step by step method. 2000 Chevy Silverado brake issues. This will remove the remaining air from the brake system. 1995 chev silverado,how do you bleed the brakes putting on new calabers and wheel sensor on left front side. Read the latest news about GM, including information on the company's direction, open recalls, consumer reviews and complaints, and more. Anything over 4-5 psi would push brake fluid past those seals - don't suppose they're really designed to contain pressure beyond gravity. do either of them first. The 2003 Chevrolet Silverado has 124 NHTSA complaints for the service brakes at 100,399 miles average. This means that the ability to write new posts and access various member features will go away. I took my calipers completely off of the truck when I replaced the front pads. i have been trying to bleed the rear brakes on my 1994 chevy silverado but i can hardly get any fluid at all to com out of the fitting when i try. Refer to Hydraulic Brake System Bleeding (Manual) Hydraulic Brake System Bleeding (Pressure). Recently had to replace the rear brake line due to rust. Vaccum pressure is okay it is at 22 psi,brake vaccum assist its okay also. We rent a portion of our shop to a repair garage and they have been doing brake lines like crazy the past few years. trying to bleed front abs brakes on 2008 silverado just keep getting more air can not get pedal just keeps going - Chevrolet 2008 Silverado 1500 question. 2000 Chevy Silverado brake issues. This could be a sign that air has crept into the brake lines. Another telltale symptom is a fresh puddle of fluid. there are normally two bleed nipples on the abs block, for fron and rear. Below is a picture of a Shimano Deore M596 brake calliper before the pistons were reset and after to show you the difference. When vehicle is coming to a stop the abs will cause the brake to pulsate. Bleed the front brake lines on the proportioning valve in the same fashion. Bleeding the brakes will flush that air out. Shop for discount priced 2010 Chevrolet Silverado 3500 HD Brake Master Cylinder. The 1989 Chevrolet C/K 1500 was equipped with rear wheel antilock brakes, commonly known as RWAL. Brake hydraulics is the process of brake fluid under pressure applying force to your brake system. This will remove the remaining air from the brake system. trying to bleed front abs brakes on 2008 silverado just keep getting more air can not get pedal just keeps going - Chevrolet 2008 Silverado 1500 question. The Kelsey-Hayes 4-Wheel Anti-Lock (4WAL) brake system is used to prevent wheel lock-up during heavy braking. Also, carefully check for proper push rod adjustments and stop light/cruise control switch adjustments. No matter how much I bleed the brakes this way the level of the reservoir stays the same which leads me to believe I'm just pumping out the fluid that is already in the lines. do either of them first. SOURCE: how to bleed brakes on 1500 1999 silverado In order to do this. It may be necessary to bleed the system at all four wheels if a low fluid level allowed air to enter the system, or the brake pipes have been disconnected at the master cylinder or combination valve. It's really not a big deal to replace. I doubt anything in the system is actually damaged. It's a 4x4, extended cab, 5. I replaced all the brake lines and was able to bleed the rear brakes just fine but I couldn't seem to get any fluid to the front. (Page 1 of 7) CarComplaints. Brake repair bills from a mechanic can be unmanageable, so learn how to do this auto repair yourself by watching this video. always start with the longest line in the truck and work your way to the shortest. I took my calipers completely off of the truck when I replaced the front pads. Bleeding a master cylinder is a very straightforward job, but is critical to make sure your brake system is safe and free of air. Anyway, we have been trying to bleed the back brakes and the won't bleed. do either of. Dealer ship put on brake booster,master cylinder,new abs pump,new brakes,rotors,calipers and deperusreizer valve. but when i bleed the brakes, the oil doesnt come shooting out like the front does, it just slowly runs out. You calibrate the caliper by pushing the cylinder and open the fluid reservoir. well you were right its the booster. well guys, as yall know, i finished the lift on my truck and i have two questions. do either of. I hate to junk it or spend a lot of money on parts. I did not replace the hoses but I did bleed the one line that I replaced the wheel cylinder on. Why wont your brakes work after bleeding? Asked in Auto Parts and Repairs, Headlights Tail and Brake Lights, Chevy Silverado when you are bleeding brakes you always start from the farthest. Pressure brake bleeding is the best way to make sure you get all the air out. Here is how to fix spongy brake pedal feel on a 1988 to 1998 Chevrolet Silverado truck. In the beginning i couldn't get the brakes to fully pump up like they should, so i ended up bypassing the rear height sensing proportioning valve an that didn't help the problem. there are normally two bleed nipples on the abs block, for fron and rear. that is done the same way as the calipers, basically pressing the pedal with the bleed nipple open, closing the nipple and then releasing the pedal, so as on the pedal return it sucks in fresh brake fluid rather than air. How are you bleeding the brakes? As in step by step method. Dusty, ineffective brake pads and lame, aftermarket ceramic units reduce dust without reducing stopping power. No brake on the right front ! 7 Answers. do either of. so me moved on to the drivers rear side. Now there is no brakes working on the right front. I replaced all the brake lines and was able to bleed the rear brakes just fine but I couldn't seem to get any fluid to the front. When jacked up with the brake pedal pushed all the way down, the wheels still spin freely. Improper operation, noisy system. Not quite sure what you mean. It may take a few minutes ot get all the air out. Truck used - 2004 GMC 2500 HD I did this video when replacing my rear brake caliper. Q: How much to bleed 4 brake. Ok, I'm assuming this is a K1500, 6 lug setup right? First off, the reason I said don't bleed it or replace the master cylinder is because we've got a problem of the rear brakes working too good. I thought I have all the necessary tools on hand when I started the process. so changed front rotors and pads. I replaced one side of my back drum brakes. With the ignition OFF, apply the brakes 3-5 times, or until the brake pedal becomes firm, in order to deplete the brake booster power reserve. I'm planning on flushing and bleeding the brake system on my '00 Silverado. Look underneath the car and you should see a bleeder valve. Also replaced the brake pads on all 4 wheels while I was at it. Hi all, I need to get the brakes operational ASAP. Here is how to fix spongy brake pedal feel on a 1988 to 1998 Chevrolet Silverado truck. So pretty much I have to either use the brake peddle and only go half way like I was bleeding the brakes at the wheels or ur 12 volts on it but not for long period of time. 2002 Chevy 1500 Silverado anti lock brake failure. 2 person system. (Page 1 of 7) CarComplaints. Brakes seem to work, but like I said the pedal sinks when holding it. Front brakes wont bleed Brakes. best bet is to note VIN and call dealer. No it does not but when you bleed your brakes make sure you start at the bleeder valve farthest away from master cylinder and work your way in to get a oil the air out. the metering valve ,if you have one ,only "delays" brake pressure to the front dics until the rear drum springs have a chance to unseat. This could be a sign that air has crept into the brake lines. Buy HTOMT 2 in 1 Brake Bleeder Kit Hand held Vacuum Pump Test Set for Automotive with Sponge Protected Case, Adapters, One-Man Brake and Clutch Bleeding System: Brake System Bleeding Tools - Amazon. The 2006 Chevrolet Silverado has 4 problems reported for brake lines rusted from front to rear. com : Car complaints, car problems and defect information. Once I was finally able to stop the truck, all of the brake fluid leaking out. Average repair cost is $720 at 90,250 miles. put new calipers and brakes all around, then blew the rear hard line bleeding the system. The problem is that the brake hydraulic system will release most of the residual pressure so you can drive the car, but it retains a little residual pressure, just enough to make the brakes drag a bit. Clutch Master Cylinder Repair and Bleeding by Lowell Felix Tortona. The problem with air is that it is compressible, while the fluid that goes in. I took my calipers completely off of the truck when I replaced the front pads. while driving 35 mph, the brakes failed without warning. Reading your bleeding method from your post I can tell this Isn't totally your first rodeo. The 2006 Chevrolet Silverado has 4 problems reported for brake lines rusted from front to rear. I couldn't notice the brakes dragging until I got about 5 miles down the road. It has always had a soft spongy pedal. Chevrolet Silverado 1500 Brake Problems. Both sides won't bleed. Shop for discount priced 2010 Chevrolet Silverado 3500 HD Brake Master Cylinder. Brake repair bills from a mechanic can be unmanageable, so learn how to do this auto repair yourself by watching this video. They don't let up on the pedel untill you tell them to. Clutch Master Cylinder Repair and Bleeding by Lowell Felix Tortona. To fix this, it may be necessary to bleed your brakes. I watched him do this and wondered if air would be introduced into the system. The vehicle was taken to an independent mechanic, who diagnosed that the rear drivers side drum deteriorated and the brake spring was fractured. 2 person system. While replacing those, I noticed the brake lines were badly rotted too. How to Bleed Brakes Going seems like the most important part of a vehicle, until you are going and you want to stop. Depress the brake pedal several times, then loosen the bleeder plug of one of the above wheels with the pedal depressed. How do i bleed the brakes on my 2000 chevt silverado 1500 series - Answered by a verified Chevy Mechanic We use cookies to give you the best possible experience on our website. the old system had a rock hard brake pedal feel. there are many suggestions on how to EXACTLY do this, please explain step by step. 1 ©2003-2006 InteractivePHP, Inc. After bleeding the back brakes about 10-15 times each the brakes no longer went to the floor (and fixing the sneaky leak of course). 2) But the rear brakes don't work. Exercise care when servicing brake parts. Brakes won't bleed on 99 silverado Replaced all the brake lines, one line blew so I lost my brakes, all new lines, now I can't get any pedal even after trying to bleed the brakes several times. When adding fluid to the brake master cylinder reservoir, use only DOT-3 brake fluid from a clean, sealed brake fluid container. Start your car’s engine after bleeding the entire brakes then press on its brake pedal. I have a 2003 Chevy Silverado 1500 and the brakes pretty much don't work at all. The process is the same for any other vehicle. silverado won't start hear two clicks now get nothing 2 Answers. Use a bleed hose on each wheel cylinder and caliper bleed screw. We rent a portion of our shop to a repair garage and they have been doing brake lines like crazy the past few years. Reading your bleeding method from your post I can tell this Isn't totally your first rodeo. Foundation Brakes Bleeding Provided you have not opened the hydraulic system i. When your brake light comes on, your brake responsiveness fades or your brake pedal begins to sink toward the floor, you may have a brake fluid leak. Lets start when the problem started occuring. obviously the. The brake pedal will go to the floor and subsequent efforts to get a satisfactory brake pedal will fail. I have already replaced the master cylinder, flushed and bled the brake lines at all four wheels. i have a 1998 chevy blazer 2wd i replaced the drv. Yes these abs brakes need special equipment to bleed correctly although I've been told if you get abs to active by skidding in grass or gravel then bleed brakes again this will help had this work on our company truck 06,also had to replace the power assist on our 07 similar problem my opinion junk!. The process is the same for any other vehicle. The 007 Flaring Tool is the easiest and most reliable flaring tool you'll ever use. The brake pads on disc brakes adjust automatically for wear, whether the car has disc brakes on the front wheels only or on all four. This truck has fought me on everything I've done. Cleaning should be done by dampening the brake components with a fine mist of water, then wiping the brake components clean with a dampened cloth. First, the brakes have never been great but they should be better then what they are now. And my brake peddle is spongy and goes to the floor does that matter or still just pump the brakes peddle only half way with each pump. Re: Bleeding the ABS on a Jimmy Notes NOTE: Bleeding is necessary if air has entered the hydraulic brake system. See our lemon odds and nada odds page to see vehicles with no repairs or vehicles with more than three repairs. Air will compress in a hydraulic system causing a low pedal. Maine Huts and Trails won’t open for winter without. We`ll see, I`m gonna replace it tonight. Brake bleeding is the process of purging air bubbles from the brake line. Last week I noticed that my brake pads were finished so I wanted to replace them. I replaced every brake line in the truck with stainless steel lines and replaced all the calipers too because they were rotted and the bleed screws disintegrated. This will control the direction the released brake fluid will travel in as you bleed the system and provide a container to catch it in. you just have to bleed regular until you get all the air out…. After checking for a firm pedal, drive the vehicle above three miles per hour. It's really not a big deal to replace. Also, carefully check for proper push rod adjustments and stop light/cruise control switch adjustments. If you do not have a diagnostic scanner you can try bleeding the brakes with the engine running to get the ABS pump to help bleed the air through it. With the ignition OFF, apply the brakes 3-5 times, or until the brake pedal becomes firm, in order to deplete the brake booster power reserve. Why Your Old Chevy's Brakes Won't Bleed. Brakes won't bleed on 99 silverado Replaced all the brake lines, one line blew so I lost my brakes, all new lines, now I can't get any pedal even after trying to bleed the brakes several times. Howard your not happy with the hydroboost as is? The main reason I swapped besides the vacuum booster started leaking is I hated the pedal travel feel and on that note those guys in that link on FSC are idiots every single 95-98 chev with vacuum brakes Iv ever drove feel the same way all the brake work in the world wont make them feel any better. Do not sand or grind brake lining unless equipment used is designed to contain the dust residue. Front Right Brake Caliper Won't Bleed I suspect its the master cylinder, but wanted to change the very old looking brake fluid first. Now there is no brakes working on the right front. I replaced the master cylinder, front brake lines, calipers, pads and rotors. This is a two person method without using a bleeder pump. with the hose up. When it comes to your Chevrolet Silverado 1500, you want parts and products from only trusted brands. If I pump the brake fast I can get 4 inches of firm brake pedal height. Thanks for the reply but the 2013 Silverado has brake shoes. Bleed the hydraulic brake system. Bench Bleeding. This could be a sign that air has crept into the brake lines. Also please check out the statistics and reliability analysis of Chevrolet Silverado 1500 based on all problems reported for the Silverado 15. Replace all brake fluid. Next, bleed the old fluid out by attaching a bleeder hose to the bleeder nut located on the back of the brake assembly. The normal way if you pump the brakes is to have a helper slowly pump the pedel and hold it down and then you open the bleeder screw let it bleed and close the screw and tell them to pump slowly again. I am sure that if you bleed the brakes JUST to flush new fluid through that there would not be any problems. It would be best to bleed the brake lines at this time in order to flush out the old fluid and replace it with fresh DOT3 brake fluid. The problem is that the brake hydraulic system will release most of the residual pressure so you can drive the car, but it retains a little residual pressure, just enough to make the brakes drag a bit. Have a look at www. My 2004, V8, 1500, single cab, LWB Silverado only gets 13 MPG at best in town. Buy a 2008 Chevrolet Silverado 2500 HD Brake Pad Set at discount prices. Average repair cost is $720 at 90,250 miles. there are normally two bleed nipples on the abs block, for fron and rear. Most car manufacturers recommend renewing the hydraulic brake fluid every 18 to 24 months. Pressure brake bleeding is the best way to make sure you get all the air out. You know that air rises in the system. We`ll see, I`m gonna replace it tonight. Front brakes won't bleed Brakes. well, i have 2000 silverado 1500 4x4. well you were right its the booster. Find 2000 Chevrolet Silverado 1500 recalls information, reported by the NHTSA, and we will help you find a nearby service center where you can get your car fixed. I had a brake line blow out on my RR line so I bought brake line and replaced it. Next, fill up the master cylinder with oil to make sure it doesn't run dry. To see how frequently Chevrolet Silverado 1500 problems occur, check out our car reliability stats. to/2U3z6IR This applies to many cars, but I've noticed a lot of people have this issue on 73-87 Chevy Pickups. Today we are going to show you how to replace the front brake pads and rudders on this Chevy pickup truck. Check this ONLY if you are not getting brake fluid from the lines when you attempt to bleed them. When it comes to your Chevrolet Silverado 1500, you want parts and products from only trusted brands. Also, I like to form a hanger. Ok so a couple weeks ago, I noticed that my 04 chevy silverado 1500 4WD had a brake that was dragging. The flex hoses are good. Once it's reset the fluid should return to the rear wheels. URGENT: Front Brake Won't Bleed. When the brake fluid boils, it expands and causes the hard brake pedal that one feels. This video is about Cannot Bleed Brakes Here's Why. hey guys i replaced rotors, calipers and hoses on my 87 2wd, the front brake reservoir (larger one) drained down to empty during the process of the job, the rear brakes were not touched. There was no problem in the front, but when I tried bleeding the rears no fluid would come out of the bleeders on the new wheel cylinders. This is a two-man job that requires a coordinated effort. 2009 Silverado 1500 LS 4-Door, Crew Cab Pickup, Power Brake System, With Front Disc, With Rear Disc, 7700 Lb Vac Brakes, Active Apply Disc Brake(J92). It may look like the park brake shoe won't come off without taking off the axle, but it will. Consumer has concern over the abs brakes. Off Topic - Need Help With Bleeding ABS Brakes On 2003 2500HD Chevy - I had some troubles with the brakes on my 03 pickup last week. Please read part one before continuing with this article. Jack up the car on tire at a time. It's a 4x4, extended cab, 5. i did a search on "brake bleeding" and a detailed answer was given by "vile z" back in 1/07. Fill power steering reservoir to the bottom of the filler neck with specified fluid. Front wheels bled no problem. The ABS system, when it's idle, does not affect the brake system. I had to slam on brakes to avoid a accident. Taking this into consideration, there seems to be a dichotomy with your description. Bleed only one valve, or wheel brake unit at a time. Chevrolet Silverado 1500 Brake Problems. you first have to bleed the block. Shop for discount priced 2010 Chevrolet Silverado 3500 HD Brake Master Cylinder. Bleeding brake system on a 1997 Chevy silverado. never having done this before i am not sure about certain details. The configuration can vary depending on the manufacturer. Free Same Day Store Pickup. The rear wheel cylinder no longer actuates either. the point is may be I have to do it in the proper sequence and I don't know that need. Thus, causing the pads and rotors to get very hot. Hydro-Boost Tips & Hints All power steering pump operated power brake boosters. I am confused on why replacing the back brakes would cause the front brakes to lock up. 1 ©2003-2006 InteractivePHP, Inc. Order Chevrolet Silverado 2500 HD Anti-Lock Brake Control Module online today. But I felt I could do better, for less. The worst complaints are abs activates at low speed for no reason, brake lines rusted from front to rear, and. Mechanic's Assistant: Thanks. We replaced the broken brake line, added new fluid and bled the brakes for about an hour and there still seems to be air in the lines or something else because the brake pedal still goes to the floor. 98 GMC C1500 Sierra 5. I am sure that if you bleed the brakes JUST to flush new fluid through that there would not be any problems. SOURCE: how to bleed brakes on 1500 1999 silverado In order to do this. Choose a Year for your Chevrolet Silverado 3500 HD 's Brake Master Cylinder. Well after poking around on the web I read that without the scan tool you have to remove the two sm. Bleeding the brake fluid will ensure that your Chevy Silverado is safe to drive. The front ones have no fluid coming out of them when I try to bleed them. Attach a hose to the valve, then run the valve into a jar filled with brake. Ok so a couple weeks ago, I noticed that my 04 chevy silverado 1500 4WD had a brake that was dragging. 1 ©2003-2006 InteractivePHP, Inc. Removed them and reinstalled the old pads and rotors and everything is working ok. The brake pipes also pass through a. well guys, as yall know, i finished the lift on my truck and i have two questions. Hi all, I need to get the brakes operational ASAP. Using a 2000-07 Chevy Silverado as the example, this video demonstrates how to remove and replace a truck's rear brakes. While you're down there, check those rotors. Fill power steering reservoir to the bottom of the filler neck with specified fluid. the contact had to place excessive pressure on the brake pedal just to get the vehicle to slow down. Yes, my password is:. My brake aint working like they suppose to when i slam on my brakes truck wont stop and pedal gets hard and stays like that. that is done the same way as the calipers, basically pressing the pedal with the bleed nipple open, closing the nipple and then releasing the pedal, so as on the pedal return it sucks in fresh brake fluid rather than air. 5 engine without abs, just want to know the brake bleeding eloquence, I,m having spongy brake pedal after I replace the brake lines and master cylinder, I bleed the system more than once. Is there anything special about bleeding the brakes on 1999 silverado 1500 after replacing the right front brake line. The 2006 Chevrolet Silverado has 4 problems reported for brake lines rusted from front to rear. I bled the system with a pressure bleeder but still have a spongy pedal. It is best to use a pressure bleeder. I just got done bleeding it the "ol fashioned way". It may be necessary to bleed the system at all four wheels if a low fluid level allowed air to enter the system, or the brake pipes have been disconnected at the master cylinder or combination valve. 2002 chevrolet silverado 2500 hd without warning, exhibits very soft brake pedal accompanied by sensation that brake pedal "goes to the floor," apparent activation of abs, and difficulty stopping safely. First, the brakes have never been great but they should be better then what they are now. Recently I had to replace a brake line that had a hole worn in it. Posted by Anonymous on Oct 13, 2012. always start with the longest line in the truck and work your way to the shortest. Bleeding the brakes allows you to remove all air from the brake fluid system to allow the fluid to build pressure again. it may take a while to bleed them but it will. I had to slam on brakes to avoid a accident. When the brake fluid boils, it expands and causes the hard brake pedal that one feels. I recently had to replace all the brake lines in my 2001 Chevrolet Silverado 2500HD as well as all new calipers, rotors and pads. start at the right rear brake and bleed until you get fluid and then move to the left. Slowly depress and release the brake pedal. Consumer has concern over the abs brakes. e-brake was backed off all the way so as to eliminate any confusion about brake adjustment. Anyway, we have been trying to bleed the back brakes and the won't bleed. there are normally two bleed nipples on the abs block, for fron and rear. well the same thing happened there. We replaced the broken brake line, added new fluid and bled the brakes for about an hour and there still seems to be air in the lines or something else because the brake pedal still goes to the floor. There's not any way to check for this, but bleeding your brakes will remove the bad stuff and replace it with new fluid. Look underneath the car and you should see a bleeder valve. I have a 1996 chevy Silverado. This could be a sign that air has crept into the brake lines. 2009 Chevrolet Silverado Battery Technical Service Bulletins (TSBs). Chevrolet Silverado 2007-2013: How to Bleed Brakes. Bleeding the brakes will flush that air out. It has always had a soft spongy pedal.