Buick Skyhawk Brake Master Cylinder Replacement at your home or office.

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Brake Master Cylinder Replacement Service

How much does a Brake Master Cylinder Replacement cost?

On average, the cost for a Buick Skyhawk Brake Master Cylinder Replacement is $198 with $103 for parts and $95 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
1985 Buick SkyhawkL4-2.0LService typeBrake Master Cylinder ReplacementEstimate$427.97Shop/Dealer Price$514.34 - $748.70
1987 Buick SkyhawkL4-2.0L TurboService typeBrake Master Cylinder ReplacementEstimate$354.77Shop/Dealer Price$428.36 - $624.34
1988 Buick SkyhawkL4-2.0LService typeBrake Master Cylinder ReplacementEstimate$309.97Shop/Dealer Price$372.36 - $534.73
1989 Buick SkyhawkL4-2.0LService typeBrake Master Cylinder ReplacementEstimate$309.97Shop/Dealer Price$372.33 - $534.69
1984 Buick SkyhawkL4-1.8LService typeBrake Master Cylinder ReplacementEstimate$380.43Shop/Dealer Price$461.82 - $683.43
1985 Buick SkyhawkL4-1.8L TurboService typeBrake Master Cylinder ReplacementEstimate$405.97Shop/Dealer Price$492.36 - $726.73
1978 Buick SkyhawkV6-3.8LService typeBrake Master Cylinder ReplacementEstimate$395.43Shop/Dealer Price$477.66 - $699.89
1983 Buick SkyhawkL4-2.0LService typeBrake Master Cylinder ReplacementEstimate$614.65Shop/Dealer Price$753.57 - $1147.26
Show example Buick Skyhawk Brake Master Cylinder Replacement prices

What is the brake master cylinder and how does it work?

The brake master cylinder has a piston that pressurizes fluid in the brake lines to each wheel cylinder as you apply force to the brake pedal. That pressure moves the pistons that are in the wheel cylinders. As the pistons in those wheel cylinders move, they force the brake pads or shoes tightly against the rotors or drums allowing the car to stop quickly.

The size of the pistons in the master cylinder and in the wheel cylinders are carefully selected when designing a car. This allows drivers to apply moderate pressure on the brake pedal when stopping, but creates tremendous pressure applied at the wheel cylinders. A car can then stop quickly even at high speeds. Depending on how much force is applied to the brake pedal, the pressure in a car’s brake lines will typically be in the range of 800 PSI to 2,000 PSI.

Master Cylinder

When to replace the master cylinder?

  • External fluid leaks. There should be no fluid visible on the external surfaces of any portion of the master cylinder or the plastic fluid reservoir.
  • Low, slowly falling, or spongy brake pedal. Faulty internal seals on the piston can cause internal leaks and also seepage of brake fluid into the power assist brake booster. Internal leaks will typically be accompanied by a low pedal, a spongy brake pedal, or a pedal that slowly sinks as you maintain pressure. In all cases, you will experience reduced braking abilities.
  • Discolored brake fluid. No brake fluids, other than those specified for the year, make, and model, are fully compatible with a car’s internal rubber seals in the master cylinder. Discoloration of brake fluid can also occur due to moisture and particulate contaminants in the fluid.
  • Warning lights on the dash. If the brake system warning light illuminates, there are several potential causes but failure of the master cylinder is in the list of causes that would have to be investigated.

How do mechanics replace the brake master cylinder?

  • On vehicles with power brakes, the master cylinder is bolted to the metal housing of the power brake booster. There is usually an electrical plug connecting to a brake fluid level sensor on the master cylinder reservoir and that plug must be disconnected.
  • Once all steel brake lines are disconnected from the master cylinder, the master cylinder is unbolted from the brake booster and removed from the vehicle.
  • The new master cylinder must be bench-bled to expel air from internal passages that contain the piston. Then the new master cylinder is bolted to the brake booster and the brake lines are reattached. The electrical plug for the fluid level sensor is reconnected.
  • Whenever a new master cylinder is installed, brakes lines to wheel positions must be bled to remove air, old fluid and contaminants. If your vehicle is equipped with anti-lock brakes, the mechanic may use a bidirectional scan tool during brake bleeding to actuate the ABS pump, thus ensuring that all air is removed from the complex valving in the ABS system.
  • All brake line connections that were removed during the master cylinder replacement are inspected for any leakage and the vehicle is road tested to ensure normal operation of the brakes.

Is it safe to drive with a master cylinder problem?

No, any fault in the master cylinder, which is part of the braking system creates a safety risk. A fully operational brake system is essential to quickly stopping your car. Driving a vehicle isn’t safe, if the master cylinder is leaking or has other faults, as braking distances might be longer than normal. The braking system on a vehicle is among the most important safety systems and must be fully functional to safely drive your vehicle.

When replacing the master cylinder keep in mind:

  • The master cylinder is only one component of many in a vehicle’s braking system. During replacement of the master cylinder, all vehicle braking system components should be inspected to ensure maximum braking power is available.
  • The amount of friction material remaining on the brake pads and brake shoes should be verified.
  • Brake lines and flexible rubber hoses at each wheel position should be inspected for corrosion and deterioration.
  • The power brake booster should be evaluated to ensure that power assist is working properly.

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Real customer reviews from Buick owners like you.

Excellent Rating

(9)

Rating Summary
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Carlos

12 years of experience
77 reviews
Carlos
12 years of experience
Buick Skyhawk L4-2.0L - Car is not starting - Buena Park, California
Carlos was right on time, which is the first point of professionalism. He was able to diagnose the vehicle and was desirous of getting us up and running without suggesting extra items that need attention, but won't prevent the vehicle from running. We booked another appointment with him for future work. We were very pleased with him as a person and his knowledge of the vehicle (1987 Buick Skyhawk). Definitely would use this service again as long as Carlos is available.

David

32 years of experience
107 reviews
David
32 years of experience
Buick LeSabre V6-3.8L - Brake Master Cylinder - Phoenix, Arizona
What a way to start off my New Year, David was an excellent mechanic. I was going to have my brake master cylinder replaced because the cap was broken and what I thought was irreplaceable. David replaced it and explained to me that I didn't need to replace it because it was operating correctly. I did need brake fluid and when added my brake light went off. I asked him many more questions about my old car and he explained everything and also put this info in the report that was send to me. I have had a lifetime of bad experience with mechanics and that all ended today. I will be using, Your Mechanic again and I hope all the other mechanics you have are as good as David. I would prefer him to do my work but I'm willing to take the chance because of him. I am very happy. Thanks, David. Thumbs up to, Your Mechanic.

Jimmi

27 years of experience
231 reviews
Jimmi
27 years of experience
Buick Century V6-3.1L - Brake Master Cylinder - Orlando, Florida
Happy with services.

Walter

46 years of experience
341 reviews
Walter
46 years of experience
Buick LeSabre V6-3.8L - Brake Master Cylinder - Tulsa, Oklahoma
Walter is very friendly and professional. He was very informative of what he had to do as well as pointing out advice on keeping my car healthy. I felt very comfortable with my choice to go with Your Mechanic. I’ll choose Your Mechanic much more in the future!

Excellent Rating

(9)

Rating Summary
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Number of Buick Brake Master Cylinder Replacement services completed
99+
services done by our mechanics
TOTAL NUMBER OF EXPERT Buick MECHANICS
800+
experts on our platform

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