2020 Chevrolet Blazer Other or unknown Problems
- Complaints
- 57about this part
- Share
- 25%of 224 total for the year
- Median mileage
- —not reported
- Trend
- RisingComplaints filed in the last 3 full calendar years are at least 25% higher than in the 3 years before.
NHTSA recorded 57 complaints about the other or unknown of the 2020 Chevrolet Blazer, 25% of the 224 complaints for this model year. 1 of these say a crash was involved, according to the filers.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“The backup camera in my preowned 2020 Chevy Blazer RS stopped operating within 7 months of purchasing Jan 13, 2024. It was replaced by local dealership. However, less than two weeks, it stopped working again. It's a safety feature that's not operational concerned may lead to accident. I did some research online where other owners have experienced the same problem.”
NHTSA complaint #11606605, filed 2024-08“AC blowing warm air when all the way on low and on full blast. Brought to repair shop and found that there was no freon, the radiator had a hole and the condensor had a hole. Had to have radiator, condensor and thermostat replaced along with adding freon. The total for this was $2077.02 I should not be having these problem with a 2020 Blazer. I purchased this vehicle on 28 May 2020.”
NHTSA complaint #11583967, filed 2024-04“While driving an alert came up adaptive steering limited, drive with care . At the same time, my AC stopped working a d my thermostat dropped to cold and will not move from there. From searching online, this is a common and known issue with Chevy SUVs yet there is no recall or attempt to correct.”
NHTSA complaint #11688073, filed 2025-09“After putting the vehicle into park I received an error message action required shift vehicle to park . I was then unable to completely shut the vehicle off or lock the doors and the alarm and notice continued to sound. I ended up spending over $1200 in repair costs and car rental to have the vehicle fixed.”
NHTSA complaint #11616774, filed 2024-09“When putting the vehicle into park, we are receiving a “Shift to Park” error. This issue appears to be common among thousands of General Motors vehicles. However, the dealership is unable to assist us because the repair bulletin only applies to the 2019 model year and does not include the 2020 model year. Despite this, the issue we are experiencing is identical to the one reported for the 2019 model.”
NHTSA complaint #11625547, filed 2024-11Related service bulletins
- 11037555Sep 26, 2026This PI provides Diagnostics tips on how the LIN bus works and how to diagnosis it.
- 11037253Sep 4, 2026This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
- 11035340Jul 21, 2026PI to help diagnose A/C concern
- 11030974Apr 1, 2026This preliminary information communicates information about how to determine if a wheel and tires size change is available.
- 11030092Mar 9, 2026This Preliminary information communicates the steps on how to save a GDS2 Session Log and upload to a Technical Assistance Case in CX Connect.
- 11030091Mar 9, 2026This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
- 11029950Mar 2, 2026This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no DTC'ss
- 11028658Feb 4, 2026This Preliminary information communicates the potential for condensation to freeze up inside the Crankcase Pressure Sensor causing dtc P04FB to set.
- 11027697Jan 16, 2026This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no DTC's
- 11027701Jan 14, 2026This PI advised dealer technicians of possible causes of diesel fuel contamination in gasoline powered vehicles and advises of warranty direction.
Other or unknown: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2025 | 9 | 26% |
| 2024 | 9 | 17% |
| 2023 | 3 | 7% |
| 2022 | 9 | 17% |
| 2021 | 24 | 17% |
| 2020 | 57 | 25% |
| 2019 | 54 | 29% |
| 2007 | 1 | 11% |
| 2004 | 1 | 2% |
| 2003 | 1 | 1% |
| 2002 | 7 | 3% |
| 2001 | 10 | 3% |
| 2000 | 17 | 3% |
| 1999 | 12 | 3% |
| 1998 | 14 | 2% |
| 1997 | 27 | 4% |
| 1996 | 14 | 1% |
| 1995 | 36 | 3% |
| 1994 | 8 | 1% |
| 1993 | 3 | 1% |
| 1992 | 2 | 1% |
| 1991 | 2 | 1% |
| 1990 | 2 | 6% |
| 1988 | 1 | 3% |
| 1987 | 1 | 3% |
| 1984 | 1 | 11% |
Other parts of the 2020 Chevrolet Blazer
78 complaintsTransmission and drivetrain
75 complaintsEngine
71 complaintsSteering
43 complaintsBrakes
11 complaintsFuel system
5 complaintsLane departure
5 complaintsSuspension
4 complaintsVehicle speed control
4 complaintsAir bags
3 complaintsEngine cooling
3 complaintsForward collision avoidance
3 complaints
← All problems reported for the 2020 Chevrolet Blazer
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 30, 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