Buick Park Avenue Proportioning / Combination Valve Replacement at your home or office.

Our mobile mechanics offer services 7 days a week. Upfront and transparent pricing.

Estimate price near me

Service Location

Customer Ratings

(107)

Included for free with this service

Online Booking

Mechanic comes to you

12-month / 12k-mile warranty

Free 50 point safety inspection

Our certified mobile mechanics can come to your home or office 7 days a week between 7 AM and 9 PM.

Customer Ratings

(107)

Proportioning / Combination Valve Replacement Service

How much does a Proportioning / Combination Valve Replacement cost?

On average, the cost for a Buick Park Avenue Proportioning / Combination Valve Replacement is $153 with $59 for parts and $95 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
1993 Buick Park AvenueV6-3.8LService typeProportioning / Combination Valve ReplacementEstimate$231.99Shop/Dealer Price$271.24 - $366.49
2004 Buick Park AvenueV6-3.8LService typeProportioning / Combination Valve ReplacementEstimate$1143.23Shop/Dealer Price$1415.31 - $2209.00
1992 Buick Park AvenueV6-3.8LService typeProportioning / Combination Valve ReplacementEstimate$211.99Shop/Dealer Price$251.26 - $346.52
1998 Buick Park AvenueV6-3.8L TurboService typeProportioning / Combination Valve ReplacementEstimate$211.99Shop/Dealer Price$251.24 - $346.48
1997 Buick Park AvenueV6-3.8L TurboService typeProportioning / Combination Valve ReplacementEstimate$211.99Shop/Dealer Price$251.27 - $346.55
2001 Buick Park AvenueV6-3.8LService typeProportioning / Combination Valve ReplacementEstimate$1143.23Shop/Dealer Price$1415.31 - $2209.00
2001 Buick Park AvenueV6-3.8L TurboService typeProportioning / Combination Valve ReplacementEstimate$1148.23Shop/Dealer Price$1420.17 - $2213.76
1999 Buick Park AvenueV6-3.8LService typeProportioning / Combination Valve ReplacementEstimate$216.99Shop/Dealer Price$256.49 - $351.94
Show example Buick Park Avenue Proportioning / Combination Valve Replacement prices

What is the Proportioning / Combination Valve all about?

Your braking system relies on hydraulic pressure to operate. When you depress the brake pedal, brake fluid is pushed through the system to the wheels. Fluid pressure is responsible for actuating both disc brake calipers, as well as drum brakes. However, there are numerous components in line between the brake pedal and the brakes themselves, including the combination valve.

The combination valve is responsible for metering fluid to disc brakes, as well as fulfilling tasks done by both the pressure differential switch and proportioning valve (which is responsible for reducing the fluid pressure in the lines leading to the rear drum brakes). This is necessary because of how brakes work in terms of lockup – the more weight there is on a wheel, the more force can be applied without locking up the brakes. In rear drum brakes, the weight on the wheel is comparatively small (the weight of the engine on the front wheels is considerable).

Keep in mind:

  • In modern cars that employ combination valves, replacing the entire valve body is necessary if the proportioning valve fails.
  • There is no way to check operation on this type of valve unless it has failed completely.
  • The valve may have failed due to many reasons, including debris in the brake fluid.

How it's done:

  • The defective proportioning combination valve brake lines are disconnected
  • The defective proportioning combination valve is removed from the vehicle
  • The new proportioning combination valve is installed and the brake lines are connected to valve
  • The brake system is bled and purged of air in the system and the brake fluid is refilled
  • The vehicle is road tested for proper brake operation

Our recommendation:

Follow your automaker’s recommendations on brake system service to ensure that the fluid remains in good condition and free of debris. Have your braking system maintained by our expert mechanics to ensure that any potential problems are caught as soon as possible. Driving with a failing proportioning valve puts you at increased risk.

What common symptoms indicate you may need to replace the Proportioning / Combination Valve?

  • Rear brakes lock up easily, particularly on wet pavement

How important is this service?

While it is still possible to drive with a failed or failing proportioning valve, it’s not recommended because it decreases your safety while increasing the risk of being involved in an accident because your rear brakes lock up under even light loads. Have the entire combination valve assembly replaced immediately.

Fast and easy service at your home or office

Backed by 12-month, 12.000-mile guarantee


Meet some of our expert Buick mechanics

Real customer reviews from Buick owners like you.

Excellent Rating

(107)

Rating Summary
100
5
1
0
1
100
5
1
0
1

Patrick

33 years of experience
1422 reviews
Patrick
33 years of experience
Buick Park Avenue V6-3.8L - Radiator - Austin, Texas
We really like Patrick. He arrived early, worked quickly, and did a fantastic job. When it was done, he patiently answered all our questions. We hope to see him again soon to work on our other car. Thank you, Patrick!

Pardeep

21 years of experience
1098 reviews
Pardeep
21 years of experience
Buick Park Avenue V6-3.8L - Oil Change - Fremont, California
Pardeep is always friendly, on time, and quick.

Shaun

10 years of experience
542 reviews
Shaun
10 years of experience
Buick Park Avenue V6-3.8L - Crankshaft Harmonic Balancer Replacement - Tempe, Arizona
Very helpful and communicative

Rigoberto

11 years of experience
739 reviews
Rigoberto
11 years of experience
Buick Park Avenue V6-3.8L Turbo - Brake System Flush - Chicago, Illinois
ALL AROUND COOL DUDE VERY INFORMATIVE AND HELPFUL

Excellent Rating

(107)

Rating Summary
100
5
1
0
1
100
5
1
0
1
Number of Buick Park Avenue services completed
1177+
services done by our mechanics
TOTAL NUMBER OF EXPERT Buick MECHANICS
800+
experts on our platform

Recent articles & questions

What Is the Best Way to Clean Car Mirrors?
Like Like the rest of your car, your car’s mirrors need to be clean and well maintained. If the glass is dirty or filmed over, your view to the rear and the sides is obstructed. What’s the best way to...
How to Rid Your Car of Ice
It’s It’s no secret that ice is not fun to drive on (https://www.yourmechanic.com/article/safe-winter-driving-techniques-by-kevin-woo). It can make it hard to steer your vehicle, and even harder to stop it. But the tarmac isn’t the only place that ice is a hindrance...
How to Replace a Cooling Fan Relay on Most Vehicles
Cooling fan relays fail when the radiator cooling fan no longer receives an electrical signal. A broken fan relay means the radiator cannot cool down.

My 2002 Buick Regal no dash lights and no tail lights

Looking at the wiring diagram for this vehicle, it does not appear that these two items share a common ground or fuse. These appears to be two separate problems. The instrument clusters on these vehicles are known for failing internally....

If a speed sensor on a 08 Dodge Caliber goes will the car drive real slow

It is possible for a speed sensor to limit the throttle opening since the failed sensor system can cause the powertrain to get damaged or not know how fast you are going and will cause failsafe mode on some vehicles....

Remote start quit working, check engine light came on...why?

Hi Kat. Thanks for the question tonight. Anytime a check engine light is illuminated, it means the onboard computer (ECU) has detected a fault from a sensor that impacts the operation of the vehicle. It then stores a code in...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1 (855) 347-2779 · hi@yourmechanic.com