Engine coolingPart report
2020 GMC Sierra 3500 Engine cooling Problems
- Complaints
- 1about this part
- Share
- 2%of 51 total for the year
- Median mileage
- —not reported
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 1 complaints about the engine cooling of the 2020 GMC Sierra 3500, 2% of the 51 complaints for this model year.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
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 2020 GMC Sierra 3500
Transmission and drivetrain
19 complaintsElectrical system
9 complaintsBrakes
7 complaintsEngine
6 complaintsFuel system
6 complaintsOther or unknown
6 complaintsBody and structure
5 complaintsTires
4 complaintsVisibility (wipers, defrost, mirrors)
2 complaintsAir bags
1 complaintsExterior lighting
1 complaintsForward collision avoidance
1 complaints
19 complaintsElectrical system
9 complaintsBrakes
7 complaintsEngine
6 complaintsFuel system
6 complaintsOther or unknown
6 complaintsBody and structure
5 complaintsTires
4 complaintsVisibility (wipers, defrost, mirrors)
2 complaintsAir bags
1 complaintsExterior lighting
1 complaintsForward collision avoidance
1 complaints
← All problems reported for the 2020 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