2021 Chevrolet Blazer
Common Problems
Ranked from 41 federal NHTSA complaints. Every problem links to the complaint IDs behind it.
14 Common Problems
Ordered by how often owners reported each one to NHTSA. The bar shows how common a problem is relative to the most-reported on this vehicle. Expand any problem to see the federal complaint IDs.
- 1
Electrical System Malfunction
5complaintsHigh severityElectricalThe instrument cluster goes blank, affecting visibility and safety features like lane assist.
- 2
Brake Grinding Noise
4complaintsMedium severityBrakesThe brake pads are worn, causing a grinding noise when braking.
$250–$700est. brake pads + rotors (per axle) · 1–2.5 hrs laborGet local quotes - 3
Fuel Pump Control Module Failure
4complaintsHigh severityFuel systemThe fuel pump control module failed, causing the car to stall and require replacement.
$500–$1,100est. fuel pump replacement · 2–5 hrs laborGet local quotes - 4
Service Brakes Issues
4complaintsSafety riskBrakesService brakes fail or engage unexpectedly, posing a safety risk.
$150–$1,000est. brake system diagnosis + repair · 1–4 hrs laborGet local quotes - 5
Steering Assist Reduced Warning
4complaintsMedium severitySteeringThe steering assist reduced warning appeared frequently, indicating potential issues with the power steering system.
- 6
Engine Stall at Low Speeds
3complaintsMedium severityEngineThe engine stalls at low speeds, especially during turns or when accelerating from a stop.
$150–$1,200est. stalling / shutdown diagnosis + repair · 1–5 hrs laborGet local quotes - 7
Tire Wear Issues
3complaintsMedium severityOtherThe tires are wearing unevenly, leading to reduced traction and potential blowouts.
- 8
Coolant Sensor Issues
2complaintsMedium severityFuel systemCoolant sensors repeatedly failed, causing incorrect temperature readings and fan malfunctions.
- 9
Engine Cooling Issues
2complaintsMedium severityEngineCooling system malfunctions lead to overheating, coolant leaks, or abnormal engine sounds.
- 10
Engine Power Loss
2complaintsHigh severityEngineThe engine experienced sudden power loss, entering limp mode and reducing acceleration capability.
$150–$1,200est. stalling / shutdown diagnosis + repair · 1–5 hrs laborGet local quotes - 11
Forward Collision Avoidance System Malfunction
2complaintsMedium severityOtherForward collision avoidance system malfunctions or becomes unavailable, reducing safety features.
- 12
Radiator Failure
2complaintsHigh severityFuel systemThe radiator failed multiple times, leading to coolant loss and engine overheating.
$400–$1,000est. radiator replacement · 2–4 hrs laborGet local quotes - 13
Thermostat Malfunction
2complaintsMedium severityEngineThe thermostat malfunctioned, leading to incorrect temperature readings and engine fan issues.
$200–$600est. thermostat replacement · 1–3 hrs laborGet local quotes - 14
Transmission Shifting Issues
2complaintsMedium severityTransmissionThe transmission experienced delays and harsh shifts, especially when reversing, leading to safety concerns.
$200–$2,500est. drivetrain diagnosis + repair · 1–8 hrs laborGet local quotes
Other years & sources
Data source: U.S. National Highway Traffic Safety Administration (NHTSA) owner complaints and recalls. Problems are clustered and ranked from the complaint record; occurrence counts reflect corroborating complaints, not total incidence. Vehicle image is illustrative. Repair-cost figures are typical U.S. independent-shop ranges (parts + labor) for the class of repair shown — actual quotes vary by region, engine, and diagnosis; always confirm with a local shop.