2021 GMC Acadia Engine cooling Problems
- Complaints
- 3about this part
- Share
- 2%of 155 total for the year
- Median mileage
- 37,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 3 complaints about the engine cooling of the 2021 GMC Acadia, 2% of the 155 complaints for this model year. Where a mileage was given, the median is 37,000 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 2021 GMC Acadia. The contact stated while driving at an undisclosed speed, the check engine warning light illuminated and DTC: P04FB; was displayed. The vehicle was taken to the dealer where it was diagnosed with moisture of the crank case. The vehicle was repaired. The contact stated that the failure was a quick fix and was covered under the warranty. The contact stated that the failure had occurred several times and was covered under warranty. The contact was informed that there was no fix for the failure. The manufacturer was not made aware of the failure. …”
NHTSA complaint #11716760, filed 2026-02, 37,000 miles“The contact owns a 2021 GMC Acadia. The contact stated that while driving, he heard a loud rattling noise coming from the exhaust. The contact then stated that the RPM’s increased and the rattling noise became louder. No warning light was illuminated. The vehicle was taken to the dealer where it was diagnosed that the exhaust resonator failed the whole exhaust assembly needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 28,000.”
NHTSA complaint #11487664, filed 2022-10, 28,000 miles“The contact owns a 2021 GMC Acadia. The contact stated that while driving at an undisclosed speed, the check engine warning light illuminated. In addition, the coolant fan was running after the engine was turned off. The vehicle was taken to Auto Zone to be diagnosed due to the check engine warning light being illuminated. The contact was informed that DTC: P1098; was retrieved, which indicated a fault with the coolant control valve. The vehicle was taken to the dealer, where it was confirmed that the coolant control valve had failed. The vehicle remained at the dealer unrepaired. …”
NHTSA complaint #11725820, filed 2026-03, 69,000 milesEngine cooling: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2021 | 3 | 2% |
| 2020 | 1 | 1% |
| 2019 | 5 | 1% |
| 2018 | 1 | 0% |
| 2017 | 2 | 0% |
| 2014 | 2 | 0% |
| 2012 | 3 | 1% |
| 2011 | 4 | 1% |
| 2010 | 10 | 3% |
| 2009 | 8 | 2% |
| 2008 | 20 | 2% |
| 2007 | 12 | 3% |
Other parts of the 2021 GMC Acadia
39 complaintsEngine
30 complaintsFuel system
30 complaintsOther or unknown
22 complaintsBrakes
19 complaintsSteering
18 complaintsTransmission and drivetrain
17 complaintsAir bags
10 complaintsBack-over prevention (rear camera)
7 complaintsForward collision avoidance
7 complaintsVehicle speed control
7 complaintsLane departure
4 complaints
← All problems reported for the 2021 GMC Acadia
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