2015 GMC Sierra 3500 Vehicle speed control Problems
- Complaints
- 2about this part
- Share
- 6%of 31 total for the year
- Median mileage
- 38,500miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the vehicle speed control of the 2015 GMC Sierra 3500, 6% of the 31 complaints for this model year. Where a mileage was given, the median is 38,500 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“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 milesRelated service bulletins
- 11014171Jan 31, 2025This service bulletin provides information on proper use of floor mats.
Vehicle speed control: other model years
Other parts of the 2015 GMC Sierra 3500
6 complaintsExterior lighting
6 complaintsBrakes
4 complaintsEngine
4 complaintsAir bags
3 complaintsOther or unknown
3 complaintsSteering
3 complaintsFuel system
2 complaintsVisibility (wipers, defrost, mirrors)
2 complaintsElectronic stability control
1 complaintsEngine cooling
1 complaintsSeat 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