2015 GMC Yukon · symptom sheet
Brake pedal goes hard or the booster or vacuum pump fails
- 27owner reports
- 80,000median miles
- $500median quote
- 1involved a crash
Newest report Apr 23, 2026 · checked Sep 29, 2026
27 of the 87 reports of brake wear on the 2015 Yukon describe brake booster failure.
Part of Brakes grind, pulse or wear early (87 reports)
Tick what matches of 27 reports
Brake booster failure on other Yukon years
No other Yukon model year has enough reports of brake booster failure for a sheet of its own. See every Yukon year.
What this problem usually is
This is the narrower sheet inside brakes for reports about a hard pedal or a failed power assist. The pedal stops feeling normal: it turns stiff, takes far more force, and the car needs a longer distance to stop.
What got replaced
Owners who name the part that was replaced mention the vacuum pump (13 reports) and the brake booster (6 reports).
Recalls and investigations
2 recalls on the brakes cover the 2015 model year. A recall on the same system isn't always the same failure, so read the defect text.
If a wheel-speed sensor fails, while the vehicle is traveling between 41 and 60 mph in four-wheel or automatic mode, the Electronic-Brake Control Module (EBCM) software may activate the driveline-protection system.
The amount of vacuum created by the vacuum pump may decrease over time.
All 10 recalls on the 2015 GMC Yukon, with the owner complaints on each recalled system
NHTSA investigations into the brakes on the Yukon
Brake vacuum pump failure. Closed apr 10, 2022, led to recall 19V-645.
Brake line corrosion failure. Closed jan 5, 2011.
Unwanted low-speed abs activation. Closed sep 13, 2005, led to recall 05V-379.
What owners paid
5 of the 27 reports quote a price. Each dot is one quote. The middle half runs $500 to $600.
When it happens
The middle half of failures fell between 42,500 and 90,000 miles, from the 19 reports that gave a mileage.
Is this a known problem?
The manufacturer has sent NHTSA 1 service bulletin or notice for the 2015 GMC Yukon that deal with this problem. Newest first.
Federal rules make a manufacturer send NHTSA a copy of any notice about a defect that goes to more than one dealer or owner. Most of these are service bulletins, the repair instructions manufacturers send to dealers. NHTSA generally leaves safety recall bulletins out of this file, and recalls are listed separately.
This Preliminary Information communication provides information to the technician on the steps to diagnose and repair vehicles that may have issues were the customer will need increased effort to depress the brake pedal.
What owners wrote
“The brakes are hard to push to come to a stop. I brought it to a mechanic and he said it was my vacuum pump. The air bag light comes on when you hit a hard bump in the road.”
Filed Jul 29, 2024
“My breaks stop working in drive through, pulling in parking spots, backing out, slow speed of traffic. I found out it's the power break vacuum pump. It then says Service brakes on my dash when it occurs. This started about 2 weeks ago.”
Filed Jan 24, 2024
“I almost died today. My brakes failed pedal went hard still is. Had to drive home with a stiff pedal and almost no brakes. Just paid $50,000 for this truck”
Filed Oct 23, 2021
Should you keep driving it?
This page can't tell you that. 1 of 27 reports involved a crash. Owners who file are the ones who had a bad experience, and nobody checks their reports. If the problem affects steering, braking, power or a fire risk, treat it as a safety fault and have it inspected before a long or high-speed drive.
File your own report with NHTSA. Complaint counts are how a problem gets an investigation. How reports land on this sheet.
Guide Paid for this repair before a recall covered it? How recall reimbursement works
Other problems on this car
- Tail lights or brake lights fail 247 reports
- A/C blows warm or the compressor fails 35 reports