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Engine coolingPart report

2015 GMC Sierra Engine cooling Problems

Complaints
1about this part
Share
2%of 53 total for the year
Median mileage
170,000miles
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, 2% of the 53 complaints for this model year. Where a mileage was given, the median is 170,000 miles. 1 recall campaign on record is filed under a similar system.

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 1500. The contact stated while driving 65 MPH, there was a loud pop in the engine compartment. The vehicle was steered to the side of the road where condensation was observed in the middle of the road. The vehicle was towed to a dealer where it was diagnosed that the radiator and transmission needed to be replaced. The vehicle was not repaired. On another occasion, while driving at approximately 20 MPH, the vehicle lost motive power. The vehicle was towed to a dealer where it was determined that the engine needed to be replaced. The vehicle was repaired. …”

NHTSA complaint #11565112, filed 2024-01, 170,000 miles

Related recalls

Related service bulletins

Engine cooling: other model years

YearComplaintsShare of year
201512%
201213%
201112%
201013%
200913%
200723%
200612%
200598%
200442%
200394%
2002229%
2001228%
2000215%
1999173%
1998116%
1997156%
1996114%
199562%
199463%
1993710%
199213%
199016%
198916%

Other parts of the 2015 GMC Sierra

Exterior lighting
30 complaints
Steering
6 complaints
Transmission and drivetrain
6 complaints
Air bags
4 complaints
Brakes
3 complaints
Other or unknown
3 complaints
Engine
2 complaints
Fuel system
2 complaints
Seats
2 complaints
Body and structure
2 complaints
Visibility (wipers, defrost, mirrors)
2 complaints
Electrical system
1 complaints

← All problems reported for the 2015 GMC Sierra

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 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