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Other or unknownPart report

2015 GMC Sierra 3500 Other or unknown Problems

Complaints
3about this part
Share
10%of 31 total for the year
Median mileage
45,520miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 3 complaints about the other or unknown of the 2015 GMC Sierra 3500, 10% of the 31 complaints for this model year. Where a mileage was given, the median is 45,520 miles. 1 a fire, according to the filers.

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.

“My vehicle is being hacked and controlled by other drivers using cell phones to gain access to my vehicle while driving! , and when passing or sitting in traffic! This has been going on for over six months now, every day! All day long!! Have contacted Gmc over and over, have been to their shops over and over! , they laugh at me , and tell me nothing is wrong every time. Fcc, onstar, s. Xm radio, all refuse to help me with this problem, over and over , my vehicle starts to smoke when they are doing this, they are beside me laughing with their cell phones in hand. …”

NHTSA complaint #10949520, filed 2017-02, 40,000 miles

Related service bulletins

Other or unknown: other model years

YearComplaintsShare of year
2025212%
2024714%
2023311%
2022516%
2021315%
2020612%
2019215%
2017215%
2015310%
201317%
2012222%
2011210%
200814%
200215%
200014%

Other parts of the 2015 GMC Sierra 3500

Electrical system
6 complaints
Exterior lighting
6 complaints
Brakes
4 complaints
Engine
4 complaints
Air bags
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