2014 GMC Sierra 1500 · symptom sheet
Brake pedal goes hard or the booster or vacuum pump fails
- 64owner reports
- 76,470median miles
- $1,000median quote
- 4involved a crash
Newest report Jun 12, 2026 · checked Sep 29, 2026
64 of the 144 reports of brake wear on the 2014 Sierra 1500 describe brake booster failure.
Part of Brakes grind, pulse or wear early (144 reports)
Tick what matches of 64 reports
Brake booster failure on other Sierra 1500 years
Report counts are for each model year on its own, so a newer car has had less time to collect them. Model years with too few reports of it for a sheet: 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026.
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 (26 reports), the brake booster (13 reports) and the master cylinder (3 reports).
Recalls and investigations
2 recalls on the brakes cover the 2014 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 9 recalls on the 2014 GMC Sierra 1500, with the owner complaints on each recalled system
NHTSA investigations into the brakes on the Sierra 1500
Brake vacuum pump failure. Closed apr 10, 2022, led to recall 19V-645.
What owners paid
5 of the 64 reports quote a price. Each dot is one quote. The middle half runs $400 to $1,100.
When it happens
The middle half of failures fell between 57,000 and 102,000 miles, from the 55 reports that gave a mileage.
Is this a known problem?
The manufacturer has sent NHTSA 1 service bulletin or notice for the 2014 GMC Sierra 1500 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
“This vehicle has the same issue as other recalled GMC Sierra vehicles - the brake booster pump is failing, causing braking difficulty, particularly at low RPM and after repeated presses of the brake pedal.”
Filed Dec 18, 2024
“Says I have no recalls. I have terrible gas smell and steering light abs light traction light abs light and hard brake pedal. Seats and mirrors move by there selves. Steering wheel shakes. Overall this truck is worrying me so much I won't put my kids in it. Oh also airbag light on also.”
Filed Aug 14, 2023
“I was driving my truck when the Brake assist light came on. When applied the brakes they started pulsing and grabbing. I took it in for service and was told that the Electronic Brake Control Module needed to be replaced and the brake fluid flushed.”
Filed Dec 7, 2021
Should you keep driving it?
This page can't tell you that. 4 of 64 reports involved a crash and 2 people were hurt. 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
- Headlights too dim or fail 104 reports
- A/C blows warm or the compressor fails 83 reports
- Power steering cuts out or goes heavy 78 reports
- Engine stalls or loses power while driving 75 reports
- Traction control or StabiliTrak light comes on 56 reports
- Infotainment, screen or backup camera fails 29 reports
- Battery dies or the car will not start 27 reports