2021 Chevrolet Blazer Fuel system Problems
- Complaints
- 18about this part
- Share
- 13%of 141 total for the year
- Median mileage
- 81,123miles
- Trend
- RisingComplaints filed in the last 3 full calendar years are at least 25% higher than in the 3 years before.
NHTSA recorded 18 complaints about the fuel system of the 2021 Chevrolet Blazer, 13% of the 141 complaints for this model year. Where a mileage was given, the median is 81,123 miles. 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.
“I was driving down 776 (a busy highway)Blazer completely shut off, so scary almost got hit by a semi, I don’t know how he managed to get around me , I jumped out of car! Sure thought it was my day to die! Called police for help! Had it towed home then to garage , was told it was the electrical fuel modular! Haven’t slept right in 3 days ! I’m still so shaken up!”
NHTSA complaint #11684653, filed 2025-09“Car was running fine yesterday, today does not want to start. Thought it was the battery, bought anew battery. Still wouldn't start. Rest of cat is getting great power. Code reader is reading its a fuel pump control moduler which just so happens to be in an open recall for my exact year of vehicle yet my vin number does not pop up on the GMC website under active recall. I have a 2021 chevy blazer .”
NHTSA complaint #11699684, filed 2025-11“I was driving at approx 45 mph when my car lost all ability to accelerate and shut down in the street. Flashing check engine light and esc warning on the screen. It would try to start but wouldn't. I had it towed to a mechanic who diagnosed and informed me that it is the Fuel pump power control module. Upon review he I formed me that there was a recall posted in September 2025 for 2021 Blazer on this exact issue. My car has now been unusable for a week as my mechanic recommends it be repaired via recall at dealership.”
NHTSA complaint #11695649, filed 2025-10“The Transmission valve control body went out while I was on the freeway.I was able to pull off to the side safely but has rendered my vehicle inoperable until I get this repaired. I have confirmed this with the dealership. This is a large enough issue with vehicles that the necessary parts are on back order. Anecdotally, the dealership told me there was a vehicle that was waiting for almost 3 months for a replacement part. For context I have regularly maintained this vehicle and just 10000 miles ago got my transmission flushed.”
NHTSA complaint #11649350, filed 2025-03“I am reaching out regarding an ongoing issue with my 2021 Chevrolet Blazer. The vehicle is experiencing a noticeable stutter or hesitation when shifting between second and third gear. In addition, there are instances where the vehicle accelerates unexpectedly or more aggressively than intended. This behavior is particularly concerning, as it presents a potential safety issue during normal driving conditions. These concerns have become increasingly noticeable, and I am concerned they may indicate a transmission or related mechanical problem that requires prompt inspection and resolution. …”
NHTSA complaint #11735127, filed 2026-05Related service bulletins
- 11028909Feb 19, 2026Emission Recall. General Motors has decided to conduct a Voluntary Emission Recall. Certain vehicles listed above may have a condition which can cause the fuel pump power control…
- 11028382Feb 5, 2026Emission Recall. Additional VINs moved to Open status.
- 11027870Jan 29, 2026Emission Recall. Additional VINs Moved to ‘Open’ Status
- 11027666Jan 15, 2026Emission Recall. Fuel Pump Power Control Module. Additional VINs Moved to ‘Open’ Status
- 11026626Dec 17, 2025Emission Recall. Additional VINs moved to Open status.
- 11024191Oct 9, 2025Emission Recall. Population Expansion.
- 11023730Oct 3, 2025Emission Recall. Fuel Pump Power Control Module.
- 11023093Sep 11, 2025Emission Recall. General Motors has decided to conduct a Voluntary Emission Recall. Certain vehicles listed above may have a condition which can cause the fuel pump power control…
- 11019378Apr 12, 2025This service bulletin provides a procedure to replace the FPDCM if found to cause customers concerns of Crank No Start, Stalling, Malfunction Indicator Lamp (MIL) Illuminated…
- 11017173Mar 21, 2025This informational bulletin instructs the tech when fuel/fluid is needed to be tested and where it can be sent for analysis.
Fuel system: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2025 | 1 | 3% |
| 2024 | 4 | 8% |
| 2023 | 3 | 7% |
| 2022 | 7 | 13% |
| 2021 | 18 | 13% |
| 2020 | 5 | 2% |
| 2019 | 2 | 1% |
| 2007 | 5 | 56% |
| 2006 | 11 | 58% |
| 2005 | 7 | 47% |
| 2004 | 1 | 2% |
| 2003 | 10 | 13% |
| 2002 | 22 | 9% |
| 2001 | 33 | 10% |
| 2000 | 84 | 14% |
| 1999 | 30 | 7% |
| 1998 | 29 | 4% |
| 1997 | 84 | 11% |
| 1996 | 36 | 3% |
| 1995 | 112 | 9% |
| 1994 | 45 | 7% |
| 1993 | 22 | 4% |
| 1992 | 11 | 4% |
| 1991 | 7 | 3% |
| 1989 | 4 | 11% |
| 1988 | 1 | 3% |
| 1987 | 3 | 10% |
| 1984 | 2 | 22% |
Other parts of the 2021 Chevrolet Blazer
42 complaintsElectrical system
40 complaintsOther or unknown
24 complaintsBrakes
21 complaintsTransmission and drivetrain
19 complaintsSteering
15 complaintsForward collision avoidance
8 complaintsTires
5 complaintsSuspension
4 complaintsEngine cooling
3 complaintsLane departure
3 complaintsAir bags
2 complaints
← All problems reported for the 2021 Chevrolet Blazer
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 29, 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