2025 GMC Sierra 2500 Engine Problems
- Complaints
- 4about this part
- Share
- 14%of 28 total for the year
- Median mileage
- 600miles
- Trend
- Too newThis model year is less than 4 years old, so a trend is not meaningful yet.
NHTSA recorded 4 complaints about the engine of the 2025 GMC Sierra 2500, 14% of the 28 complaints for this model year. Where a mileage was given, the median is 600 miles.
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.
“We were towing a fifth wheel camper with our truck on an interstate highway in Pennsylvania when our serpentine belt burst suddenly and without warning. Our truck is a 2025 model with only 10,000 miles driven. We lost all power steering and power brakes of both the truck and the camper and the motor shut off while we were driving at 65 mph. My husband struggled to gain control of the truck and camper which was severely fishtailing and was eventually able to get over to the shoulder and stop the vehicles. …”
NHTSA complaint #11691951, filed 2025-10“The contact owns a 2025 GMC Sierra 2500. The contact stated that while driving at an undisclosed speed, the vehicle failed to accelerate as intended while depressing the accelerator pedal. The check engine warning light was illuminated. In addition, the contact stated that the RPM was fluctuating while driving. The vehicle was towed to a local dealer however, the vehicle was not diagnosed or repaired due to the warranty. The manufacturer was made aware of the failure. The failure mileage was approximately 600.”
NHTSA complaint #11634563, filed 2025-01, 600 miles“Component / System Failure The exhaust system, specifically the exhaust manifolds and previously the EGR system components, appear to have failed or malfunctioned, allowing exhaust gases to enter the passenger cabin. The dealer initially replaced the EGR cooler diverter on December 23, 2025. However, the condition persisted. On February 3, 2026, cracked exhaust manifolds were identified by the dealership, and a major front-end teardown was advised to complete the repair. The vehicle is currently available for inspection upon request. …”
NHTSA complaint #11717926, filed 2026-02“Burning an unusual amount of oil. Have seen several instances of blue smoke in the exhaust. Have had to add over a quart of oil twice in less than 6500 miles.”
NHTSA complaint #11714116, filed 2026-01Related service bulletins
- 11024330Sep 6, 2025This technical bulletin provides a procedure to replace the camshaft actuator magnet to correct customer concerns of engine related shudder.
- 11026101Jun 5, 2025This bulletin provides a procedure to check and replace the oil cooler seals before just replacing the oil cooler, for an oil leak.
- 11026017Jun 5, 2025This service bulletin provides information on replacing the intake manifold when the engine is replaced after severe internal engine damage.
- 11024486May 16, 2025This bulletin advises the tech to inspect deeper into what may be to main cause of an engine failure.
- 11024485May 15, 2025The service bulletin advises the tech of a normal transmission shift condition and the delay in throttle response when the throttle plate is opened rapidly and advises the…
Engine: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2026 | 1 | 8% |
| 2025 | 4 | 14% |
| 2024 | 12 | 11% |
| 2023 | 3 | 9% |
| 2022 | 4 | 9% |
| 2021 | 8 | 15% |
| 2020 | 10 | 13% |
| 2019 | 6 | 19% |
| 2018 | 8 | 23% |
| 2017 | 6 | 16% |
| 2016 | 9 | 15% |
| 2015 | 7 | 8% |
| 2014 | 3 | 10% |
| 2013 | 1 | 2% |
| 2012 | 3 | 10% |
| 2011 | 5 | 8% |
| 2010 | 1 | 10% |
| 2009 | 2 | 6% |
| 2008 | 4 | 6% |
| 2007 | 1 | 1% |
| 2005 | 5 | 4% |
| 2004 | 9 | 6% |
| 2003 | 6 | 4% |
| 2002 | 2 | 1% |
| 2001 | 8 | 6% |
Other parts of the 2025 GMC Sierra 2500
7 complaintsSteering
7 complaintsOther or unknown
6 complaintsTransmission and drivetrain
3 complaintsAir bags
2 complaintsEquipment
2 complaintsExterior lighting
2 complaintsBody and structure
2 complaintsSuspension
2 complaintsElectrical system
1 complaintsFuel system
1 complaintsVehicle speed control
1 complaints
← All problems reported for the 2025 GMC Sierra 2500
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 29, 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