2015 Gmc Sierra: Reliability Data

Source: NHTSA — 67 complaints
67
Total Complaints
1,800mi
Median Mileage
EXTERIOR LIGHTING
Top Issue
4
Crash Reports

When Do Complaints Happen?

Distribution of NHTSA complaints by vehicle mileage at time of report.

200 25th Percentile
1,800 Median Mileage
12,000 75th Percentile

What Fails?

Most reported component issues from NHTSA complaints.

EXTERIOR LIGHTING
29
POWER TRAIN
6
STEERING
6
AIR BAGS
4
ENGINE
2
EXTERIOR LIGHTING:HEADLIGHTS
2
UNKNOWN OR OTHER
2
SERVICE BRAKES
2
SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
1
STEERING: STEERING WHEEL/HANDLE BAR
1

Severity Assessment

4
Crashes
2
Fires
1
Injuries
0
Deaths

Sample Complaint Reports

"TL* THE CONTACT OWNS 2015 GMC SIERRA K3500 DENALI. THE CONTACT STATED THAT WHILE DRIVING AT NIGHT, THE HEADLIGHTS FAILED TO PROVIDE ENOUGH LIGHTING CAUSING THE CONTACT'S VISIBILITY TO BE DIMINISHED. AS A RESULT, THE CONTACT WAS ONLY ABLE TO DRIVE THE VEHICLE WITH HIGH BEAMS ON AT NIGHT. THE VEHICLE ..."
"TL* THE CONTACT OWNS 2015 GMC SIERRA K3500 DENALI. THE CONTACT STATED THAT WHILE DRIVING AT NIGHT, THE HEADLIGHTS FAILED TO PROVIDE ENOUGH LIGHTING CAUSING THE CONTACT'S VISIBILITY TO BE DIMINISHED. AS A RESULT, THE CONTACT WAS ONLY ABLE TO DRIVE THE VEHICLE WITH HIGH BEAMS ON AT NIGHT. THE VEHICLE ..."
"THE PROJECTOR HEAD LIGHTS ARE VERY POOR AT BEST. VERY LOW ILLUMINATION. IT IS VERY DIFFICULT TO SEE THE ROAD AT NIGHT. DRIVING IN SOME CONDITIONS IT IS EXTREMELY DIFFICULT TO SEE THE ROAD AND THE SIDES OF THE ROAD. WHEN MAKING A RIGHT HAND TURN THE DRIVER CANNOT SEE ANYTHING ON THE RIGHT. WHEN RAINI..."

Source: NHTSA ODI Complaints Database. Names and identifying details omitted.

Data source: View this vehicle on NHTSA.gov | NHTSA ODI Complaints Database. Public domain.

Methodology: Complaint counts and mileage distributions are computed directly from consumer-reported NHTSA complaints. This data represents reported issues, not failure rates — vehicles without complaints are not represented. Full methodology.

Data through: 2026-03-28