Chevrolet · Known Issues
2021 Chevrolet TrailBlazer Problems: 6 Known Issues
2021 model year · 140+ owner reports · Updated September 2026
2021 · All trims · All engines
Choose the year and equipment for your written issues and visual request.
2021 model year · 140+ owner reports · Updated September 2026
2021 · All trims · All engines
Choose the year and equipment for your written issues and visual request.
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According to Au7o's analysis of 140+ owner reports, the 2021 Chevrolet TrailBlazer has 6 documented known issues. None of the listed issues is rated critical; this is not a complete reliability assessment. The most commonly reported issue is Turbocharger Oil Leak and Failure with 140 owner reports. Across all issues with published estimates, repair costs range from $300 to $3,500. DIY maintenance guides at au7o.io.
BACK OVER PREVENTION: SENSING SYSTEM: CAMERA
General Motors, LLC is recalling certain 2024-2025 Buick Envista, 2024-2026 Buick Encore GX, Chevrolet Trailblazer, and 2025 Chevrolet Trax vehicles. The rearview camera screen may display a distorted or blank image.
EQUIPMENT:MECHANICAL:ACCESSORY SCISSOR/SCREW/BOTTLE JACK/LIFT:STAND
General Motors, LLC. (GM) is recalling certain 2020-2022 Buick Encore GX and 2021-2022 Chevrolet Trailblazer vehicles. The emergency jack, if not positioned as directed in the vehicle owner's manual, can fracture while in use.
Enter your VIN at NHTSA.gov to check recalls specific to your vehicle.
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According to Au7o's analysis of 140+ owner reports, the 2021 Chevrolet TrailBlazer has 6 documented issues. The most frequently reported are: Turbocharger Oil Leak and Failure, CVT Transmission Shudder and Hesitation, 1.2L/1.3L Turbo Engine Oil Consumption. None are rated critical, but regular maintenance is recommended.
The 2021 Chevrolet TrailBlazer has 6 known issues documented across 140+ owner reports. None of the matching records is rated critical; this is not a complete reliability assessment. Regular maintenance following the manufacturer's schedule helps prevent many common problems.
Repair costs for known Chevrolet TrailBlazer issues range from $0 to $3,500, depending on the specific problem and whether you choose DIY or professional repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
The 1.2L and 1.3L turbocharged three-cylinder engines in the Trailblazer can develop turbo oil seal leaks, causing oil consumption and blue smoke on startup. The turbo oil feed and return lines are also prone to seepage. In severe cases, the turbo can fail completely. Repairs typically run $300-$2,200. Severity: medium.
The Trailblazer with the 1.2L turbo and CVT automatic develops shudder during light acceleration and hesitation from stops. Some owners report a rubber-band feel typical of CVT calibration issues. Repairs typically run $0-$3,500. Severity: medium.
The small-displacement turbo engines in the Trailblazer can consume oil between changes, particularly the 1.2L 3-cylinder. Some owners report needing to add oil between the 7,500-mile change intervals. Repairs typically run $0-$2,000. Severity: medium.
Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.
GM recalled 2021-2022 Chevrolet TrailBlazer vehicles because the emergency jack supplied with the vehicle can fracture while in use if it is not positioned exactly as the owner's manual directs. On a TrailBlazer, that jack is the tool an owner reaches for at the roadside to chang… Severity: low.
The Chevrolet Infotainment 3 system freezes, goes to a black screen, or reboots spontaneously. Bluetooth connectivity drops and Apple CarPlay/Android Auto connections are lost. The system may become unresponsive to touch input, requiring a manual reboot. Software stability issues… Repairs typically run $0-$800. Severity: low.
The small-displacement turbocharged 3-cylinder engines exhibit significant turbo lag and hesitation during initial acceleration from a stop, particularly when the A/C compressor is engaged. The ECM calibration is aggressive on fuel economy, which delays throttle response. The CVT… Repairs typically run $0-$150. Severity: low.