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Engine coolingPart report

2019 GMC Sierra 3500 Engine cooling Problems

Complaints
1about this part
Share
8%of 13 total for the year
Median mileage
27,000miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 1 complaints about the engine cooling of the 2019 GMC Sierra 3500, 8% of the 13 complaints for this model year. Where a mileage was given, the median is 27,000 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 2019 GMC Sierra 3500. The contact stated that while operating the vehicle with the air conditioner on and blowing air the occupants had experienced an acid/chemical burning sensation to the eyes and throat. The failure was intermittent and had affected multiple occupants. The vehicle was taken to the local dealer who was unable to duplicate the failure and no service was performed. The manufacturer was also contacted. The failure mileage was 27,000.”

NHTSA complaint #11421959, filed 2021-06, 27,000 miles

Related service bulletins

Engine cooling: other model years

YearComplaintsShare of year
202516%
202412%
202314%
202012%
201918%
201615%
201513%
2009120%
200716%
200619%
200528%
200215%
2001617%
2000312%
1999211%
1997110%

Other parts of the 2019 GMC Sierra 3500

Brakes
4 complaints
Electrical system
3 complaints
Engine
2 complaints
Equipment
2 complaints
Other or unknown
2 complaints
Air bags
1 complaints
Exterior lighting
1 complaints
Fuel system
1 complaints
Steering
1 complaints
Transmission and drivetrain
1 complaints
Vehicle speed control
1 complaints

← All problems reported for the 2019 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