2015 GMC Sierra 1500 Service Brakes Problems
- 140
- Owner complaint records in our dataset
Records are owner complaints, not a measured failure rate.
Owner complaint recordsComplaint records reflect reports in our dataset and do not measure how frequently the problem occurs across all vehicles.
Among these 140 stored complaint records:
- 11 indicate a crash
- 0 indicate injury
- 1 indicate fire
What owners report
- brake pedal · 80 records
- vacuum pump · 42 records
- brake booster · 11 records
- brake vacuum · 10 records
- pedal became · 8 records
- pedal becomes · 8 records
Mileage in stored records
| Band | Records |
|---|---|
| 30–60k mi | 69 |
| 60–100k mi | 40 |
| 1–30k mi | 15 |
| 100–150k mi | 8 |
Complaint records
Owner-submitted complaint content, presented as stored.
Service Brakes
Hard to no braking at low speed. Power brake assist failure.
ODI 11207211
Service Brakes
Brake failure at parking lot speed. While reversing in truck, brakes became hard and failed. Almost hit another vehicle.
ODI 11205085
Service Brakes
Increased / inconsistent brake pedal effort at low speeds; truck takes more effort to stop, increased breaking distance
ODI 11205731
Service Brakes
At low idle the braking become very stiff and extreme pressure on the brake peddle is need to stop the vehicle. Hank graff of durand mi indicated it is due to a failed brake assist vacuum pump. The service rep. Also experienced the issue when they pulled the vehicle into the repair bay. As the owner, i have experienced this braking issue multiple times.
ODI 11203807
Service Brakes
While pulling into a parking lot my brakes failed to stop my truck twice. The brake pedal was very stiff, like it was a manual brake and not power. Had to depress brake pedal very hard to get my truck to stop. I shut off the engine and then restarted and the brake pedal returned to normal.
ODI 11203010
Service Brakes
Tl* the contact owns a 2015 gmc sierra 1500. While driving 50 mph, the brakes failed to respond and the contact lost control of the vehicle. The contact drove on the shoulder and was able to park in a rest area to inspect the vehicle. The contact drove the vehicle back home. The vehicle was taken to mcgovern buick gmc (located at 2806, [redacted], westborough, ma 01581, [redacted]) where it was diagnosed that the…
ODI 11203169
Service Brakes
Brake pedal won't go down and is stiff . Brakes don't react.
ODI 11202695
Service Brakes
Brake booster vacuum faulty. Causing a near miss in drive thru almost rear ending another car. Vacuum pump faulty.brakes become hard to push and get no response. This is a very dangerous. Gm needs to have a re-call before people get killed. It is a known issue lots of the same complaints.
ODI 11202621
Service Brakes
At first the issue started as i was parking in reverse, pressed the brakes and the truck did not want to stop until i put a lot of pressure on the brakes. Then pulled forward to check and it did the same thing so i parked the truck and left it overnight. It worked fine in the morning and the next few days. Then it happened again after about a five hour drive home from work i exited the freeway exit 99 in tumwater…
ODI 11202879
Service Brakes
Brake vacuum pump. At slow speeds my brakes almost don't seem to work. I'm sure it's the same problem i've read about.
ODI 11196679
Service Brakes
Tl* the contact owns a 2015 gmc sierra 1500. While backing out of a parking space, the contact depressed the brake pedal, but the vehicle did not stop. As a result, the contact struck a parked vehicle. A police report was not filed and there were no injuries. The vehicle was taken to an independent mechanic who determined that the brake vacuum pump was damaged and needed replacement. The dealer and manufacturer were…
Crash reported
ODI 11196400
Service Brakes
Yesterday afternoon while backing out of parking spot, my brakes became unresponsive. The pedal was extremely hard to press and would not stop the vehicle. The result was the vehicle rolling down an inclined parking lot and hitting another vehicle. Normal braking had resumed when leaving the accident. This is the second time for the brakes to become unresponsive at low speeds. Approximately 1 month ago the same…
Crash reported
ODI 11194870
Service Brakes
Brakes failed to reser at low speeds, resulting in near collision. Brake pedal became stiff and unresponsive. Has also happened previously, was told brake vacuum pump failure is the cause. Was notified this does not qualify under vehicle warranty despite reading of multiple reports of failure, technical bulletin release, and immediate safety issues.
ODI 11193805
Engine · Service Brakes · Visibility/Wiper
Tl* the contact owns a 2015 gmc sierra 1500. While an independent mechanic was inspecting the vehicle, the contact was informed of a radiator leak. There were no warning indicators illuminated. The vehicle was taken to goodwin chevrolet brunswick (located at [redacted], brunswick, me 04011, [redacted]) where it was diagnosed that the radiator and air conditioner condenser needed to be replaced. The contact also…
ODI 11234276
Service Brakes
Backing up the truck the brake pedal became hard and the truck would not stop like i lost power i almost hit my dog and the garage it was very scary
ODI 11192311
Service Brakes
At low speed and on a number of occasions, the brakes have seemed to lose power and it required a lot of brake pressure to stop the vehicle and avoid hitting another vehicle, my garage, etc. It had been happening intermittently over the past month or so. Went in to the dealer and they replaced the vacuum pump at a cost of approx $600.
ODI 11186319
Service Brakes
Very difficult to stop the truck while going at a low rate of speed 5 to 10 mph. Had to forcefully apply pressure to the brake pedal to get it to stop still required more stopping distance. Brakes did not become fully functional until after placing the vehicle in park and shutting the vehicle down waiting for approximately 15 minutes. Restarted the vehicle and brake were functioning properly. This event occured at…
ODI 11186215
Service Brakes
Vacuum pump failed at 58000 miles. Lost brake assist at parking lot speeds. Could have caused an accident.
ODI 11185487
Service Brakes
The brakes at a low rate of speed (1-10 mph) partially gives out which prolongs the stopping distance of the vehicle. It seems as though the abs kicks in but for no reason. Must strongly push down on the pedal to get vehicle to stop, which still requires additional stopping distance. Has occurred sporadically from mid-2018 to march 2019. No resolution through dealership.
ODI 11184349
Service Brakes
On several occasions slow driving in parking lots i have lost power assist braking and almost hit a car parked in the spot in front of me. I have read online about the issue with the brake vacuum pump and am thinking that is my issue. My brake pedal after a few pumps will get super stiff. On every occasion that this happened it was slow moving adjusting into a parking spot and had pumped the brakes several times.…
ODI 11192072
Service Brakes
Brakes completely failed. Replaced brakes on all 4 wheels, but to no avail. Then replaced the master cylinder and still no brakes. My fence pole and mailbox stopped my vehicle.
Crash reported
ODI 11183112
Service Brakes
I pushed on the brakes when slowly pulling into a parking spot and the brakes got squishy and barely stopped before i hit another parked car. This happened a few times before i got the vehicle home. Then a message popped up that said "service brake assist system". I took the truck in and they said they would need to replace the vacuum pump and 2 belts.
ODI 11181123
Service Brakes
Brakes not working. Had to replace the vacuum pump belt, brake booster vacuum pump, and ac belt. Cost $573.86. Vehicle only has 40k miles. Very dangerous, vehicle would not stop when applying brakes
ODI 11174963
Engine · Service Brakes
Tl* the contact owns a 2015 gmc sierra. While driving low speeds, the vehicle violently vibrated and made an abnormal noise. Also, the stabilitrak and check engine indicators illuminated. The contact mentioned that the check engine indicator periodically illuminated and flashed. Also, while driving, extra force was needed to depress the brake pedal and stop the vehicle. The vehicle was taken to boulevard buick gmc…
ODI 11246710
Service Brakes
At low speeds breaking becomes extremely difficult leading to longer stopping distance.
ODI 11173689
Catalog parts for this system
Catalog year/make/model rows for 2015 GMC Sierra 1500.
Catalog fitment does not by itself prove OEM-equivalent compatibility.