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2021 Chevrolet Trailblazer

Owner reports · Recalls · Investigations

More warning signs than most Trailblazer years

Owner complaints for the 2021 Chevrolet Trailblazer are substantially higher than the model-year median of 87.5.

About this comparison →

When problems were reported

Mileage at the reported incident

Limited mileage data: 32 of 193 reports include usable mileage. There isn’t enough coverage to show a useful chart.

NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.

What to inspect

Issues worth paying extra attention to based on owner reports.

  • Electrical System. Review the 41 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Power Train. Review the 40 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Engine. Review the 38 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

7 crash reports3 fire reports4 injury reports

Structure complaints

8 reports
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Mileage unknown · Apr 28, 2025
StructureUnknown Or Other

I could turn off the engine after driving, but the key stays in the position between the engine being on and the car being off (for example when you can listen to music but your car isn’t running). The battery light came on after the issue started and so the car service place charged us to replace the battery, because they had …

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I could turn off the engine after driving, but the key stays in the position between the engine being on and the car being off (for example when you can listen to music but your car isn’t running). The battery light came on after the issue started and so the car service place charged us to replace the battery, because they had to turn on and of the car a lot and the car had to continue to run. I took it to a car service place and they ran tests and called Chevy test support to run diagnosis tests. They can’t figure it out. They think it might be the body control module. Not sure what that is. The car only has 31,000 miles on it and this is a safety issue because what if this happens and the steering wheel locks or it becomes a rolling hazard. This would affect the driver and others. There were no lights or errors indicating a problem before this happened.

NHTSA ODI #11657328

Mileage unknown · Jan 16, 2025
StructureUnknown Or Other

Found standing water in spare tire well. Back seat constantly wet, growing mold. The whole back area is moldy, mold under driver seat. My back passenger door seal has mold and water. Seat belts in back, MOLD. I had to wear a mask just to drive to the store. The mold turning black the day I took it to a shop for a water test. It'…

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Found standing water in spare tire well. Back seat constantly wet, growing mold. The whole back area is moldy, mold under driver seat. My back passenger door seal has mold and water. Seat belts in back, MOLD. I had to wear a mask just to drive to the store. The mold turning black the day I took it to a shop for a water test. It's been two days and I still haven't heard anything about the water test.

NHTSA ODI #11636360

Mileage unknown · Jul 16, 2024
Electrical SystemStructureUnknown Or Other

I first noticed an issue about a year ago when an electrical blaring noise was coming from my speakers followed by popping and crackling noises. I have taken my car into the dealership several times without resolution. Since then, I have noticed excessive humidity in the vehicle and recently found the trunk was flooded. I took t…

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I first noticed an issue about a year ago when an electrical blaring noise was coming from my speakers followed by popping and crackling noises. I have taken my car into the dealership several times without resolution. Since then, I have noticed excessive humidity in the vehicle and recently found the trunk was flooded. I took the vehicle in to the dealership again, and they say the interior fabric is compromised now and the electrical sounds I was experiencing are coming from electrical damage inside the body. I have now read another review online from someone who had the exact same experience with this make and model. I believe this is a safety hazard to drivers who are unknowingly driving around for months in a vehicle that could be flooding and could cause severe damages like in my case. I have documents to support these claims, but I do not have electronic copies. If someone reaches out to me I can provide hard copies.

NHTSA ODI #11602667

23,520 miles · Jul 14, 2023
Structure

The contact owns a 2021 Chevrolet Trailblazer. The contact stated that during inclement weather, water accumulated inside all four door panels. The contact stated no warning light was illuminated. The vehicle was taken to the local dealer and the contact was informed that the failure was common in the year, make, and model vehic…

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The contact owns a 2021 Chevrolet Trailblazer. The contact stated that during inclement weather, water accumulated inside all four door panels. The contact stated no warning light was illuminated. The vehicle was taken to the local dealer and the contact was informed that the failure was common in the year, make, and model vehicle. The vehicle was not repaired. The manufacturer had been informed of the failure. The failure mileage was 23,520.

NHTSA ODI #11532225

5 miles · May 3, 2022
StructureInjury

The contact owns a 2021 Chevrolet Trailblazer. The contact stated that while outside the vehicle, the power liftgate opened and closed independently. The liftgate struck the driver on the head. The vehicle was taken to the local dealer but the vehicle was not diagnosed or repaired. The manufacturer was notified of the failure bu…

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The contact owns a 2021 Chevrolet Trailblazer. The contact stated that while outside the vehicle, the power liftgate opened and closed independently. The liftgate struck the driver on the head. The vehicle was taken to the local dealer but the vehicle was not diagnosed or repaired. The manufacturer was notified of the failure but no additional assistance was provided. The approximate failure mileage was 5. The contact stated that this issue happens a lot and at any time.

NHTSA ODI #11463175

Mileage unknown · Dec 19, 2021
Forward Collision AvoidanceStructureWheels

I have had multiple issues with the car since I've purchased it. The brakes continuously make noise, and the automatic Emergency Braking DOES not work. The tire pressure sensors don't work, they have the wrong tire pressure for each tire, and the tires constantly over inflate. Also, my front bumper is coming off. I've taken it t…

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I have had multiple issues with the car since I've purchased it. The brakes continuously make noise, and the automatic Emergency Braking DOES not work. The tire pressure sensors don't work, they have the wrong tire pressure for each tire, and the tires constantly over inflate. Also, my front bumper is coming off. I've taken it to the dealership for all of these things, the dealership said the brakes seem fine, the front bumper clips seem to have warn down for some reason, and that they reset my tire pressure. There was no permanent solution. They put a band aid on my problem and I still have all of these issues.

NHTSA ODI #11444324

Mileage unknown · Oct 3, 2021
Structure

I was driving on the freeway and my panoramic moonroof literally exploded from the inside out. It sounded like a gunshot almost. Then the glass shattered. I am glad that the screen was closed otherwise all the glass would have gotten in my car.

NHTSA ODI #11435288

150 miles · Oct 28, 2020
Structure

PURCHASED ON 7/24/20. ON 8/1, FOUND A DEFECT SPOT ON GRILL. DEALERSHIP ORDERED NEW GRILL. ON 8/9, NOTICED PAINT BUBBLING/PEELING ON HOOD. 8/15 - 8/20, DEALERSHIP HAD GRILL REPLACED AND HOOD PAINTED. 8/21, NOTICED HOOD NOT PAINTED COMPLETELY. 8/24 - 8/28, DEALERSHIP HAD VEHICLE TO REPAINT HOOD. 9/17 FOUND FENDER CLIPS ON FR…

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PURCHASED ON 7/24/20. ON 8/1, FOUND A DEFECT SPOT ON GRILL. DEALERSHIP ORDERED NEW GRILL. ON 8/9, NOTICED PAINT BUBBLING/PEELING ON HOOD. 8/15 - 8/20, DEALERSHIP HAD GRILL REPLACED AND HOOD PAINTED. 8/21, NOTICED HOOD NOT PAINTED COMPLETELY. 8/24 - 8/28, DEALERSHIP HAD VEHICLE TO REPAINT HOOD. 9/17 FOUND FENDER CLIPS ON FRONT PASSENGER SIDE MISSING.10/2 BACK TO HAVE CLIPS INSTALLED. DEALER DIDN'T ORDER ENOUGH CLIPS SO WAITING ON MORE CLIPS TO ARRIVE. 10/16 BACK TO HAVE REMAINING CLIPS INSTALLED. 10/27 NOTICED PAINT PEELING UNDER PASSENGER SIDE HEADLIGHT. I HAVE AN OPEN CLAIM WITH GM REGARDING ALL OF THIS.

NHTSA ODI #11366803

Official recalls

4

21V440000 · Equipment:mechanical:accessory Scissor/screw/bottle Jack/lift:stand

Jun 10, 2021

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.

Consequence & remedy

Consequence: A fractured jack can cause the vehicle to collapse, increasing the risk of injury.

Remedy: Dealers will replace the jack, free of charge. Interim owner notification letters informing owner of the safety risk are expected to be mailed July 26, 2021. A second notice will be mailed once remedy parts become available. Owners may contact Buick customer service at 1-800-521-7300 or Chevrolet customer service at 1-800-222-1020. GM's number for this recall is A212335470.

20V588000 · Service Brakes

Sep 24, 2020

General Motors LLC (GM) is recalling certain 2020 Chevrolet Corvette and Cadillac CT4, CT5 and XT4, 2021 Chevrolet Trailblazer, and 2020-2021 Buick Encore GX vehicles. Sensor connection contamination in the electronic brake boost system may cause an interruption of communication between the sensor and the brake boost system.

Consequence & remedy

Consequence: If communication with the sensor is interrupted, the electronic brake boost assist could be lost. Extra pedal force will be required to slow and stop the vehicle, increasing the risk of a crash.

Remedy: GM will notify owners, and dealers will replace the electronic brake boost module, free of charge. The recall began December 9, 2020. Owners may contact Chevrolet customer service at 1-800-630-2438, Cadillac customer service at 1-800-333-4223, or Buick customer service at 1-800-521-7300. GM's number for this recall is A202307260.

20V537000 · Seats; Seats:critical Fasteners

Sep 3, 2020

General Motors LLC (GM) is recalling certain 2020 Buick Encore GX and 2021 Chevrolet Trailblazer vehicles. The rear attachment bolts of one or both front seats may not have been installed.

Consequence & remedy

Consequence: If an occupied front seat is missing the rear attachment bolts, it may move during a crash, increasing risk of injury to the occupant.

Remedy: GM will notify owners, and dealers will inspect seat attachments for both front seats and install attachment bolts as needed, free of charge. The recall began October 1, 2020. Owners may contact Chevrolet customer service at 1-800-630-2438 or Buick customer service at 1-800-521-7300. GM's number for this recall is A202304380.

Additional source detail variants (2)

Seats:critical Fasteners

General Motors LLC (GM) is recalling certain 2020 Buick Encore GX and 2021 Chevrolet Trailblazer vehicles. The rear attachment bolts of one or both front seats may not have been installed.

Consequence: If an occupied front seat is missing the rear attachment bolts, it may move during a crash, increasing risk of injury to the occupant.

Remedy: GM will notify owners, and dealers will inspect seat attachments for both front seats and install attachment bolts as needed, free of charge. The recall began October 1, 2020. Owners may contact Chevrolet customer service at 1-800-630-2438 or Buick customer service at 1-800-521-7300. GM's number for this recall is A202304380.

Seats

General Motors LLC (GM) is recalling certain 2020 Buick Encore GX and 2021 Chevrolet Trailblazer vehicles. The rear attachment bolts of one or both front seats may not have been installed.

Consequence: If an occupied front seat is missing the rear attachment bolts, it may move during a crash, increasing risk of injury to the occupant.

Remedy: GM will notify owners, and dealers will inspect seat attachments for both front seats and install attachment bolts as needed, free of charge. The recall began October 1, 2020. Owners may contact Chevrolet customer service at 1-800-630-2438 or Buick customer service at 1-800-521-7300. GM's number for this recall is A202304380.

20V295000 · Equipment:other:labels; Tires

May 21, 2020

General Motors LLC (GM) is recalling certain 2021 Chevrolet Trailblazer vehicles factory-equipped with optional 17-inch sport terrain tires. The certification label on these vehicles does not provide the tire size and cold tire pressure information for front and rear tires, as required. As such, these vehicles fail to comply with Federal Motor Vehicle Safety Standard Number 110, "Tire Selection and Rims."

Consequence & remedy

Consequence: If drivers are uninformed and overinflate or underinflate their tires, this may increase the risk of a crash.

Remedy: GM will notify owners, and will mail corrected labels for customers to apply, free of charge. The recall began July 1, 2020. Owners may call Chevrolet customer service at 1-800-222-1020. GM's number for this recall is A202304070.

Additional source detail variants (2)

Equipment:other:labels

General Motors LLC (GM) is recalling certain 2021 Chevrolet Trailblazer vehicles factory-equipped with optional 17-inch sport terrain tires. The certification label on these vehicles does not provide the tire size and cold tire pressure information for front and rear tires, as required. As such, these vehicles fail to comply with Federal Motor Vehicle Safety Standard Number 110, "Tire Selection and Rims."

Consequence: If drivers are uninformed and overinflate or underinflate their tires, this may increase the risk of a crash.

Remedy: GM will notify owners, and will mail corrected labels for customers to apply, free of charge. The recall began July 1, 2020. Owners may call Chevrolet customer service at 1-800-222-1020. GM's number for this recall is A202304070.

Tires

General Motors LLC (GM) is recalling certain 2021 Chevrolet Trailblazer vehicles factory-equipped with optional 17-inch sport terrain tires. The certification label on these vehicles does not provide the tire size and cold tire pressure information for front and rear tires, as required. As such, these vehicles fail to comply with Federal Motor Vehicle Safety Standard Number 110, "Tire Selection and Rims."

Consequence: If drivers are uninformed and overinflate or underinflate their tires, this may increase the risk of a crash.

Remedy: GM will notify owners, and will mail corrected labels for customers to apply, free of charge. The recall began July 1, 2020. Owners may call Chevrolet customer service at 1-800-222-1020. GM's number for this recall is A202304070.

Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗

NHTSA investigations

0

No exact-year investigations in this snapshot.