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NHTSA-Verified · Common Problems

2020 Chevrolet Blazer
Common Problems

Ranked from 123 federal NHTSA complaints and 1 recalls. Every problem links to the complaint IDs behind it.

4
High severity
3
Medium

7 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.

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  1. 1

    Transmission Failure and Hard Shifting

    64complaints
    High severityTransmission

    The transmission fails and exhibits hard shifting, jerking during acceleration, and loss of power, making it difficult to reach highway speeds.

    $2,500–$5,500est. transmission rebuild/replacement · 8–16 hrs labor
    Get local quotes

    Related recall: 20V668000

  2. 2

    Thermostat Malfunction

    54complaints
    High severityEngine

    The thermostat malfunctions, leading to overheating, loss of coolant, and issues with the engine cooling system, including the air conditioning and temperature gauge.

    $200–$600est. thermostat replacement · 1–3 hrs labor
    Get local quotes
  3. 3

    Reduced Steering Assist

    49complaints
    High severitySteering

    The steering assist system malfunctions, reducing the steering response and potentially increasing the risk of accidents.

  4. 4

    Steering Wheel Assist Reduced and Temperature Gauge Malfunction

    41complaints
    Medium severitySteering

    The steering wheel assist is reduced and the temperature gauge malfunctions, showing a constant 'cold' reading and affecting the air conditioning.

  5. 5

    Shift to Park Error

    37complaints
    High severityOther

    The vehicle displays a 'Shift to Park' error message even when in park, preventing the car from shutting off.

    $200–$2,500est. drivetrain diagnosis + repair · 1–8 hrs labor
    Get local quotes
  6. 6

    Electrical System Glitches

    24complaints
    Medium severityElectrical

    The electrical system frequently malfunctions, causing dashboard warnings, system failures, and overall vehicle instability.

  7. 7

    Engine Coolant Temperature Sensor Issues

    23complaints
    Medium severityEngine

    The engine coolant temperature sensor malfunctions, causing the temperature gauge to read incorrectly and the air conditioning to fail.

Other years & sources

2019 Chevrolet Blazer2021 Chevrolet BlazerAll NHTSA complaints for this vehicle →

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.