GMC Yukon Proportioning / Combination Valve Replacement Costs

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Proportioning / Combination Valve Replacement Service

How much does a Proportioning / Combination Valve Replacement cost?

On average, the cost for a GMC Yukon Proportioning / Combination Valve Replacement is $322 with $227 for parts and $95 for labor. Prices may vary depending on your location.

Car	Service	Estimate	Shop/Dealer Price
2012 GMC YukonV8-5.3L	Service typeProportioning / Combination Valve Replacement	Estimate$1209.23	Shop/Dealer Price$1485.29 - $2281.97
2003 GMC YukonV8-4.8L	Service typeProportioning / Combination Valve Replacement	Estimate$1181.23	Shop/Dealer Price$1457.31 - $2254.01
2006 GMC YukonV8-6.0L	Service typeProportioning / Combination Valve Replacement	Estimate$1181.23	Shop/Dealer Price$1457.31 - $2254.01
2009 GMC YukonV8-4.8L	Service typeProportioning / Combination Valve Replacement	Estimate$1181.23	Shop/Dealer Price$1457.28 - $2253.95
2007 GMC YukonV8-5.3L	Service typeProportioning / Combination Valve Replacement	Estimate$1181.23	Shop/Dealer Price$1457.33 - $2254.05
2012 GMC YukonV8-6.0L Hybrid	Service typeProportioning / Combination Valve Replacement	Estimate$1181.23	Shop/Dealer Price$1457.31 - $2254.01
1993 GMC YukonV8-5.7L	Service typeProportioning / Combination Valve Replacement	Estimate$1148.23	Shop/Dealer Price$1420.17 - $2213.76
1998 GMC YukonV8-5.7L	Service typeProportioning / Combination Valve Replacement	Estimate$664.82	Shop/Dealer Price$800.06 - $1157.34

Show example GMC Yukon 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.

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Nazareth

27 years of experience

275 reviews

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Nazareth

27 years of experience

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by Corie

GMC Yukon V8-5.3L - Car is not starting - San Gabriel, California

very good and fast

Tinashe

13 years of experience

605 reviews

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Tinashe

13 years of experience

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by Theon

GMC Yukon V8-6.2L - Headlight Bulb Replacement (Driver Side Low Beam) - Smyrna, Georgia

Great job done in a great timely manner. I would refer to anyone.

Ralph

38 years of experience

185 reviews

Ralph

38 years of experience

by Jonnice

GMC Yukon V8-5.3L - Power Steering Pump - Auburn, Washington

Ralph was amazing! He arrived on time, was very courteous. Ralph was patient with my situation and explaining the required and suggested services, as well as, the prices before and after work began. Appreciate all of his hard work and kindness.

Mung

21 years of experience

31 reviews

Mung

21 years of experience

by donald

GMC Yukon V8-6.2L - Exterior Door Handle Replacement (Passenger Side Rear) - Broken Arrow, Oklahoma

I believe Mung is a capable mechanic. Therefore, the three stars are for him. If I could rate the company he represents it would be one star. Thought I had a inner and outer door handle issue with the the rear passenger side of my Yukon Denali. Turned out that a cable had come loose inside the door and I didn't need the parts that were preordered and sent to Mung. He said he had no idea how to return the parts for credit or whether it was allowed. I tried to call the 800 number the company provided twice but after waiting on hold for over 20 minutes each time I ran out of patience. Bottom line is I am now stuck with $143.93 worth of parts I'll never need. Should have just taken it to the dealership. My recommendation is unless you know exactly what's wrong and exactly what parts are going to be required don't use this service. You'll most likely spend less at your local repair shop.

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