"How reliable is the 2015 Gmc Sierra 2500?"

"Based on 100 NHTSA complaints, the 2015 Gmc Sierra 2500 has a median complaint mileage of 34289 miles. The most common issue is Exterior Lighting."

"What are common problems with the 2015 Gmc Sierra 2500?"

"The most frequently reported component in NHTSA complaints for the 2015 Gmc Sierra 2500 is Exterior Lighting, accounting for a significant portion of the 100 total complaints filed."

2015 Gmc Sierra 2500: Reliability Data

Source: NHTSA — 100 complaints

100

Total Complaints

34,289mi

Median Mileage

Exterior Lighting

Top Issue

Crash Reports

When Do Complaints Happen?

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

7,000 25th Percentile

34,289 Median Mileage

97,149 75th Percentile

What Fails?

Most reported component issues from NHTSA complaints.

Exterior Lighting

Fuel/Propulsion System

Electrical System

Unknown Or Other

Power Train

Engine

Service Brakes

Steering

Seat Belts

Wheels

Severity Assessment

Crashes

Fires

Injuries

Deaths

Sample Complaint Reports

"TL* THE CONTACT OWNS A 2015 GMC SIERRA 2500. THE CONTACT STATED THAT WHILE DRIVING AT APPROXIMATELY 10 MPH, THE DEFROSTER SYSTEM FAILED TO DEFROST THE WINDSHIELD. IN ADDITION, THE WINDSHIELD WIPERS CAUSED ICE BUILD UP. THE FAILURE RECURRED ON MULTIPLE OCCASIONS. THE VEHICLE WAS NOT DIAGNOSED OR REPA..."

"VEHICLE LOW BEAM HEAD LIGHTS HAVE VERY POOR COVERAGE AND BRIGHTNESS. WHEN DRIVING AT NIGHT THEY BARELY LIGHT THE ROAD IN FRONT OF THE VEHICLE. COVERAGE SIDE TO SIDE IS VERY WEAK. ADDITIONALLY WHEN IT IS RAINING OUT, IT IS LIKE DRIVING WITH NO HEADLIGHTS ON AT ALL. I HAVE CONTACTED THE DEALER AND..."

"I HAVE THE TOW MIRRORS AND THEY HAVE LED LIGHTS IN THE MIRRORS FOR BLINKERS AND THEY ARE EXTREMELY BRIGHT! WHEN YOU USE YOUR TURN SIGNAL AT NIGHT THEY ARE SO BRIGHT THAT THEY MAKE IT SO YOU CAN NOT SEE ON COMING TRAFFIC VERY WELL FROM THE SIDES OF THE PICKUP WHILE AT A INTERSECTION OR WHEN YOU ARE ..."

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

When Were Complaints Filed?

Number of complaints by the year the issue occurred.

When Does Each Component Fail?

Median mileage at complaint for top components.

Exterior Lighting 26 complaints

25th: 400 mi Median: 8,000 mi 75th: 21,000 mi

Fuel/Propulsion System 10 complaints

25th: 81,010 mi Median: 103,876 mi 75th: 115,132 mi

Electrical System 10 complaints

25th: 87,910 mi Median: 106,074 mi 75th: 115,000 mi

Unknown Or Other 8 complaints

25th: 12,500 mi Median: 30,000 mi 75th: 97,149 mi

Power Train 8 complaints

Median: 7,000 mi

Where Are Complaints Coming From?

Top states by complaint count.

CA: 8 PA: 7 AZ: 6 LA: 6 MT: 5 MI: 5 NY: 5 IN: 5 ME: 4 FL: 4

Gmc Sierra 2500 — Other Years

See how this model compares across different model years.

Year	Complaints	Median Mileage	Top Issue	Crashes
1999	42	100,000	Service Brakes	3
2000	62	91,500	Service Brakes, Hydraulic	4
2001	171	66,500	Service Brakes, Hydraulic	19
2002	164	85,000	Service Brakes	13
2003	193	76,000	Service Brakes, Hydraulic	8
2004	175	60,000	Service Brakes	4
2005	159	58,483	Electrical System	5
2006	78	42,000	Service Brakes	4
2007	98	70,000	Air Bags	5
2008	77	71,800	Air Bags	6
2009	37	39,200	Electrical System	1
2011	81	57,000	Air Bags	2
2012	39	70,000	Air Bags	1
2013	57	60,000	Unknown Or Other	2
2014	39	39,500	Unknown Or Other	4
2016	75	25,000	Steering	2
2017	50	18,060	Service Brakes	4
2018	43	10,000	Engine	0
2019	38	25,458	Electrical System	0
2020	106	20,450	Power Train	1
2021	56	51,248	Power Train	6
2022	48	15,167	Electrical System	1
2023	34	33,000	Power Train	1
2024	118	7,000	Electrical System	3
2025	27	-	Steering	3

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