2015 GMC Sierra 3500 Engine cooling Problems
- Complaints
- 1about this part
- Share
- 3%of 31 total for the year
- Median mileage
- 48,815miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 1 complaints about the engine cooling of the 2015 GMC Sierra 3500, 3% of the 31 complaints for this model year. Where a mileage was given, the median is 48,815 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.
“The contact owns a 2015 GMC Sierra 3500. The contact stated while driving approximately 70 MPH, the vehicle abruptly lost motive power and decelerated to 25 MPH. The contact stated that the message “Engine Power Reduced” was displayed. The contact stated that the failure was intermittent, but always occurred while driving at high speeds. The contact had taken the vehicle to a local dealer however, the failure could not be duplicated. The vehicle was not repaired. The manufacturer was informed of the failure. The failure mileage was 48,815,”
NHTSA complaint #11567785, filed 2024-01, 48,815 milesRelated service bulletins
- 10251890Mar 13, 2024This technical bulletin advises of a new fuel injection cleaner kit used for decarbonizing the intake valves to correct conditions of rough idle, Crank no start, extended crank…
- 10250775Feb 22, 2024This service bulletin provides service information to technicians on guidelines to replace Oil Cooler, Oil Cooler Lines and Oil Tank if the engine was replaced where large…
- 10250505Feb 7, 2024This service bulletin provides information on the cold start control system in DI engines to reduce cold start emissions and improve fuel economy.
- 10250503Feb 7, 2024This bulletin provides information on Engine Concerns that could result from lack of scheduled maintenance, improper service or aftermarket calibrations.
- 10250347Feb 2, 2024This Warranty Admin service bulletin provides guidelines for Dealers Not Required and for Dealers Required to Contact the PQC for engine or transmission assembly replacement and…
- 10249579Jan 12, 2024This PI bulletin advises the technician on the proper way to install the pistons in an engine.
- 10247192Dec 8, 2023This warranty administration bulletin provides policy information on the requirements for 12V battery testing and warranty replacements.
- 10245395Nov 6, 2023This service bulletin provides a vibration analysis worksheet the technician can use in conjunction with the appropriate Vibration Analysis-Road testing procedure when diagnosing…
- 10244273Oct 6, 2023This service bulletin provides guidelines and diagnostic/repair information to technicians regarding vehicle engine oil consumption.
- 10242844Sep 8, 2023This service bulletin explains the difference in oil filters for gas engines with new oil pump control systems and the possibilities of what may happen using the incorrect filter.
Engine cooling: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2025 | 1 | 6% |
| 2024 | 1 | 2% |
| 2023 | 1 | 4% |
| 2020 | 1 | 2% |
| 2019 | 1 | 8% |
| 2016 | 1 | 5% |
| 2015 | 1 | 3% |
| 2009 | 1 | 20% |
| 2007 | 1 | 6% |
| 2006 | 1 | 9% |
| 2005 | 2 | 8% |
| 2002 | 1 | 5% |
| 2001 | 6 | 17% |
| 2000 | 3 | 12% |
| 1999 | 2 | 11% |
| 1997 | 1 | 10% |
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 complaintsVehicle speed control
2 complaintsVisibility (wipers, defrost, mirrors)
2 complaintsElectronic stability control
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 28, 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