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BrakesPart report

2015 GMC Sierra 3500 Brakes Problems

Complaints
4about this part
Share
13%of 31 total for the year
Median mileage
46,500miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 4 complaints about the brakes of the 2015 GMC Sierra 3500, 13% of the 31 complaints for this model year. Where a mileage was given, the median is 46,500 miles. 1 of these say a crash was involved, according to the filers. 2 recall campaigns on record are filed under a similar system.

Fewer than 15 complaints name this part, so treat the figures as a rough indication only.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“I was traveling on a busy roadway at 40 MPH when fuel filter warning light came on suddenly and vehicle lost all power - including the loss of power steering and power braking. Thankfully I had not yet entered the highway and was able to slow vehicle down but with great difficulty and not injure anyone around and that day was not towing a load. Vehicle would not restart. I had it towed to nearest dealership who then informed me that the bosch cp4 fuel pump had exploded sending metal shrapnel throughout the entire engines fuel system. …”

NHTSA complaint #11209541, filed 2019-05, 103,000 miles

“This vehicle has had numerous electrical issue from the first few months of ownership. The trailer brake system failed and was replaced on october 2014. The vehicle has had many recalls that have been corrected by owner and service provider. The second summer of ownership the vehicle had radiator issues, and most recently electrical issues again and transmission issues. While driving the vehicle electrical dashboard goes into a flicker and shuts down. Gmc was able to fix this issue at the owners cost with the vehicle being out of service for 3 weeks. …”

NHTSA complaint #10991153, filed 2017-05, 50,000 miles

“The contact owns a 2015 GMC Sierra 3500. The contact stated that the brake pedal and accelerator pedal lifted while depressed, causing the engine to rev. There were no warning lights illuminated. The dealer was contacted and made aware of the failure. The vehicle was not taken to the dealer to be diagnosed or repaired. The manufacturer was not informed of the issue. The failure mileage was approximately 37,000.”

NHTSA complaint #11759074, filed 2026-08, 37,000 miles

Related recalls

Related service bulletins

Brakes: other model years

YearComplaintsShare of year
2026120%
2025529%
20241122%
202327%
2022413%
2021525%
2020714%
2019431%
2018643%
2017538%
2016632%
2015413%
2014114%
201317%
2012111%
200814%
2007319%
2006218%
20051042%
20041458%
2003343%
2002945%
20011644%
20001246%
1999947%
1998433%
1997440%

Other parts of the 2015 GMC Sierra 3500

Electrical system
6 complaints
Exterior lighting
6 complaints
Engine
4 complaints
Air bags
3 complaints
Other or unknown
3 complaints
Steering
3 complaints
Fuel system
2 complaints
Vehicle speed control
2 complaints
Visibility (wipers, defrost, mirrors)
2 complaints
Electronic stability control
1 complaints
Engine cooling
1 complaints
Seat belts
1 complaints

← All problems reported for the 2015 GMC Sierra 3500

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology