Question about GMC Sierra 1500

1 Answer

Removing the old resivoir to reuse when replacing the master cylinder

When replacing a master cylinder how do i remove the old resivoir to reuse

Posted by on


1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 840 Answers

Should be just connected with tube and bolt. just take them off.602-909-6450 Message
Mechanical Repairs in your area. Diy's, collision repair advice, Mechanical, Technical, insurance, What you should know! How to save money on repairs, recalls, service bulletins, 40-60% off Mechanical repairs in your area. Dentless Repairs in your area. Paint repairs in your area at better rates. Come check it out

Posted on Apr 23, 2009


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

This master cylinder has four lines. Which two are for the rear brakes?

Hi Robert:
The simplest way to find out is to follow the lines to the wheels.
If you're replacing the master cylinder you shoud be installing the same unit that you will be removing.
The brake lines are positioned to that they connect to the fittings.
If you are unsure, put some masking tape on the lines and identify which fitting to use before you remove the old master cylinder.
Replacing a master cylinder is fairly straightforward however, the proper function of your brakes is CRITICAL to your vehicle's safe operation.
If you are even REMOTELY unsure, find an experienced friend or a qualified mechanic to halp you.

Oct 11, 2015 | Cars & Trucks


Clutch bleeding

The problem with rangers and explorers is the angle of the master cylinder and slave cylinder.They tend to trap an air bubble inside the that is very difficult to remove.If you are replacing the master the you should completely bleed it before you install the new one.The way I do this is place it in a vice with the line attached and the line bungie corded to the floor, to hold it straight.Hold the resivoir in the air and add brake fluid till the bubbles stop( be patient).After bubbles have stopped pump the master using the rod , keep doing this till you cannot push in on the rod.If you cand push in on the rod there is air in the system.Then free the line from the floor and attach the slave to the line but keep it above the master so the air does not go back into master.Now have someone pump the master 4 times and hold it in , the brake the bleader loose making sure they do not release master so as to not **** air back in the line.Make sure to keep the resivoir full and continue to do this till you cannot compress master.Dissconnect the slave and install the parts.the system is bled.Good luck!

on Feb 22, 2011 | Ford Ranger Cars & Trucks

1 Answer

Has the 1994 honda civic lsi got a cable or hyrdraulic clutch? my pedal has no resistance and just drops when i touch it

Yes all 92-95 civics have a hydraulic clutch system. it starts at the pedal. Pedal pulls a plunger in the clutch master cylinder which is found bolted through the firewall under the hood on the drivers side. The master cylinders resivoir is bolted to the drivers side strut tower and connected to the master cylinder with a rubber hose. A line from the master cylinder runs along the firewall tirades the passenger side wheel then turns to the front of the car and is connected with a fitting to a rubber hose. The rubber hose runs to your clutch slave cylinder. The slave pushes the clutch arm. Your clutch pedal is staying on the floor because there is no back pressure to push it back up. You have air in your clutch system. First find out why (find leak or just top up clutch master cylinder with brake fluid if no leaks) then bleed your clutch. If your clutch line is rusted there is a coupler mid way in the line on the firewall. Will save you from removing the whole line maby. And there is no need to bench bleed the clutch master cylinder. My guess is your slave cylinder is leaking. It right on the front of the transmission. Pull back the rubber boot over the end of the slave cyl. and check for fluid leaks. The bleed screw is on top of the slave cyl. Find/fix leak, fill resivoir, pump clutch 10 times then HOLD. Open bleeder screw, watch for fluid and air sputtering out or just air. CLOSE valve, release clutch. REPEAT until clutch works keeping resivoir topped up. You may also open bleeder screw and pump clutch to get fluid into the system before you do the bleed process. Keep in mind brake fluid eats paint and is not very nice on your skin or in your eyes so be carefull with it. There may also be an off chance your pedal sticks because the clutch itself is badly broken but it's not really very likely.

Sep 17, 2011 | 1994 Honda Civic

2 Answers

I replaced the slave cylinder and there still isnt no pressure

Did you bench bleed the cylinder prior to installation?

Feb 27, 2011 | 1996 Saturn SL

1 Answer

Brake fluid resivoir emptied out in 2 days and all calipers and drums are good. Is the resivoir bad or the master cylinder bad?

if there is no leaks that you can find, then the master cylinder must be leaking into the power brake booster. replace the master cylinder

Feb 14, 2011 | 1998 Kia Sportage

1 Answer

What is the name of the part attached on the right of the master cylinder on a 1994 buick century it has 4 brake lines and 2 sets of wires plugged into it. Also i need to know how to replace it

How do you know if you need a new master cylinder? Most of the time, if a brake component needs replacing, it leaves a trail to follow. This trail is made of stinky brake fluid. That's the good news. Following a trail of brake fluid will usually lead you to a current or future brake problem. There are lots of brake components that can go bad. You've got wheel cylinders, master cylinders, discs, boosters, ABS systems and even brake pads. Any of these things can make your brakes more exciting than you ever hoped. Excitement is not something we want out of our brakes.
  • Open end or box wrenches
  • Line or flare wrenches
  • Screwdrivers
  • Small pry bar or throwaway screwdriver
  • Turkey baster
  • New or Rebuilt master cylinder
  • Brake cleaner
  • Brake fluid
  • Brake lube
  • Safety glasses!Before you start wrenching on your braking system, you need to thoroughly clean all of the parts involved. The inside of a brake system is very sensitive to dirt and debris. Even the smallest piece can cause wear and malfunction. Spray the master cylinder, brake lines and other components liberally with brake cleaner. Let it soak and do it again. If it's extra gooey in there, you might need to steal your kid's toothbrush to take care of it. No matter how you do it, be sure the area is clean before you even remove the brake fluid cap. Once you've got everything ****-n-span, remove the fluid reservoir cap and **** the old brake fluid out with your turkey baster. Don't worry about getting every drop, you're just making the next steps a little cleaner.
    Note: Brake fluid can severely damage automotive paint, so keep it off the carIf your car has a "low brake fluid" sensor in the fluid reservoir cap or any other wiring (such as ABS) on the master cylinder, unplug them. Now take your flare wrench and loosen all four brake lines at the master cylinder, but don't unscrew them all the way yet! You want to leave them in there just a little bit. You'll see why in the next steps.!With the brake lines loosened but not removed, you can remove the bolts that hold the master cylinder in place. It's usually bolted to a brake booster of some shape or size, but you can look at your new master cylinder to see exactly what you should be removing. With the master cylinder bolts removed, you can lift the master cylinder up slightly (if needed) and remove the four brake lines. We left them screwed in slightly because often you aren't able to pull them all the way out because of shock tower clearance. It's not fun having to rethread all the brake lines just so you can get them out enough to remove.With the master cylinder removed you'll be able to see the rod that pushes the piston in the master cylinder. If it didn't come off with the master cylinder, there will also be a seal around the pushrod. Remove this seal. If your master cylinder came with a new seal you'll be replacing it. If not, clean it up for reuse. It still needs to come out temporarilyNow that you've removed the old master cylinder, you're ready to install the new part. But before you do, it's a good idea to bench bleed the master cylinder. It's much easier to get the air out now than later. It goes in just like it came out, so in the words of service manuals around the world, "installation is the reverse of removal."
    Once the new part is installed, you'll need to add new brake fluid (never try to reuse the old stuff) and bleed the brakes. Now you're ready to go!

Dec 11, 2010 | 1994 Buick Century

1 Answer

Power steering reservoir has a bad leak. How do I

I think but please dont quote me on this, there is a easy fix for the resivoir leaking from between the pump and the resivoir. you can remove the powersteering by removing the serpentine belt and then turn the pully to line up the 3 bolt that secure the p/s pump. removed the resivoir by removing the clips, replace the seal ("O") ring for the resivoir and reassemble, reinstall and then retest, Hope this helps

Mar 05, 2010 | 1992 Oldsmobile Cutlass Ciera

1 Answer

Do you have instructions on removing and replacing master cylinder in 1993 GMC Sierra K3500 pickup?

Removing the master cylinder is really simple, only requiring a few steps. Keep in mind that brake fluid will eat the paint of the car. So use a plastic or vinyl type fender cover to protect the vehicle's paint. Brake fluid is water soluble so if you should get some on the paint, wash it off with plenty of water as quickly as possible.
  1. Using a siphon, an old turkey baster works great, empty the master cylinder reservoir and dispose of the old brake fluid in the proper manner.
  2. Disconnect the wire connector for the brake fluid level and/or brake pressure-warning switch, if your vehicle is so equipped.
  3. Disconnect the brake lines from the master cylinder with a line wrench. A line wrench is specially designed to remove and install hydraluic fittings without rounding them off.
  4. Remove the master cylinder mounting nuts, then the master cylinder.
  5. On non-power brake vehicles, disconnect the master cylinder linkage from the brake pedal underneath the dash.
  6. On models with separate fluid reservoirs, remove the reservoir.
Before installing the new master cylinder on the vehicle, it must first be bled using a specialized bleeder kit. The master-cylinder bleeder kit comes with tubing, clips and multiple adapters. Most new or rebuilt master cylinders come with a bleeder kit for that particular master cylinder.
  1. Begin by removing the cap.
  2. Follow the directions that come with the kit to select the suitable adapters, and then connect the adapters and tubes to the ports on the cylinder. The other ends of the tube extend down into the master cylinder, and are held in place by a plastic clip. Figure 2.
  3. With the bleeder kit installed, fill the master cylinder about halfway with new brake fluid. Use a large screwdriver to depress the valve assembly inside the master cylinder. If you do not have a vise you can mount the master cylinder on the vacuum brake booster and bleed the master cylinder.
  4. Small bubbles will appear in the fluid. Continue working the valve assembly until no more bubbles appear. This indicates that the cylinder has been thoroughly bled.Reverse the removal procedure to install the master cylinder, noting the following Refer to your service manual for any Master Cylinder Push Rod Adjustment procedures if your vehicle requires it.Bleed brakes as described under Brake Bleeding.Operate the brakes several times and check for external hydraulic leaks.This is fairly straightforward job. Replacing a master cylinder should take you about 1 to 2 hours, depending on the make and model of car. If you are rebuilding the master cylinder, add about another hour or so.

Oct 12, 2009 | 1993 GMC Sierra K3500

1 Answer


no thats not normal did all the fluid come from the master or resivoir if not hes replacing the wrong parts unless the resivoir is cracked they dont go bad check your mechanic and call the buereau of auto repair if you think hes tryin to take you for a ride on most new cars the master and resivoir are sold seperate you might have an abs pump problem

Dec 22, 2008 | 2005 Dodge Dakota

1 Answer

Clutch not responding

well if you have mixed a wrong type of fluid (such as power steering or oils) you are going to have to replace the clutch master cylinder and slave cylinder. Before you install the new parts be sure to drain all the old fluid out of the clutch line, and flush the clutch line with brake cleaner and blow compressed air thru until its clean and dry. install your new parts and fill with fresh (NEW) fluid whatever the manufacturer recommends most any DOT 3 or DOT 4 brake fluids will work (read the cap on the resivoir) and proceed with bleeding the air from the system, i usually fill up the resivoir with the bleed screw open(on the slave) until fluid with no air comes out and then proceed with the bleeding process this is called gravity bleeding and will help speed things along be sure to rate this and good luck this is not very hard to do and should take about an hour HERE IS THE MASTER
AND HERE IS THE SLAVE about $80 in parts altogether including fluid please rate _JEFF

Sep 13, 2008 | 1996 Toyota Camry

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

103 people viewed this question

Ask a Question

Usually answered in minutes!

Top GMC Experts


Level 3 Expert

78267 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22326 Answers

Ronny Bennett Sr.
Ronny Bennett Sr.

Level 3 Expert

6927 Answers

Are you a GMC Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides