RoadVitals

2021 Chevrolet Trailblazer

Recalls, owner-reported complaints, investigations and safety data

Data refreshed

Owner complaintsComplaints are reports submitted to NHTSA by owners and drivers. NHTSA does not verify most reports before publishing them, and a complaint does not establish that a defect exists. Volume is influenced by how many of a vehicle were sold, how long it has been on the road, and how much attention an issue has received.
189
+7 complaints in 30 days
Safety recallsA safety recall is issued when a manufacturer or NHTSA determines that a vehicle has a safety-related defect or does not comply with a federal motor vehicle safety standard. Recall repairs are free. Whether a specific vehicle is covered depends on its VIN — a recall listed for a model year does not necessarily apply to every vehicle of that year.
4
Latest Jun 10, 2021
InvestigationsNHTSA opens an investigation to examine whether a safety defect may exist. An open investigation is not a determination that a defect exists, and many investigations close without a recall. Investigations can, however, lead to one.
0
Crash or fire reportedComplaints whose submitter recorded that a crash or a fire occurred. These are the reporter's own answers on the NHTSA form, not verified findings.
10
5 injuries, 0 deaths reported

Overview

Our database contains 189 NHTSA owner-reported complaints for the 2021 Chevrolet Trailblazer, most frequently naming the electrical, powertrain (other) and engine categories. 4 safety recalls have been issued covering this model year; and 748 manufacturer communications are on file.

Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.

What owners report

Complaints grouped by the component NHTSA recorded

Percentages are of component mentions. A single complaint can name more than one component, so these do not sum to the total complaint count.

Safety recalls

4 campaigns cover this model year

View all 4

Recalls apply to specific vehicles, not to every vehicle of a model year. Check your VIN with NHTSA or your manufacturer's dealer to confirm whether a recall affects your vehicle.

Check a VIN on NHTSA.gov
21V440000

EQUIPMENT:MECHANICAL:ACCESSORY SCISSOR/SCREW/BOTTLE JACK/LIFT:STAND

Jun 10, 2021
135,400 units potentially affected
The defect: 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.
The risk: A fractured jack can cause the vehicle to collapse, increasing the risk of injury.
The 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.
General Motors, LLCManufacturer number A212335470View on NHTSA.gov
20V588000

SERVICE BRAKES

Sep 24, 2020
3,677 units potentially affected
The defect: 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.
The risk: 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.
The 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.
General Motors LLCManufacturer number A202307260View on NHTSA.gov
20V537000

SEATS; SEATS:CRITICAL FASTENERS

Sep 3, 2020
105 units potentially affected
The defect: 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.
The risk: If an occupied front seat is missing the rear attachment bolts, it may move during a crash, increasing risk of injury to the occupant.
The 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.
General Motors LLCManufacturer number A202304380View on NHTSA.gov

Recent owner complaints

Reports submitted to NHTSA, shown in the owner's own words

View all 189
Engine
Filed Aug 3, 2026

My timing belt snapped prematurely, causing a total loss of engine power while driving on the highway, which is a severe safety hazard

NHTSA ID
11754543
Incident
Jul 29, 2026
Electrical
Filed Jul 31, 2026

I am submitting this report regarding my 2021 Chevrolet Trailblazer because it has been experiencing the "Shift to Park" issue described in the GM bulletin 19-NA-206. Even when the vehicle is shifted into Park, it intermittently displays a "Shift to Park" message and does not recognize that the transmission is in Park. This issue has been ongoing and has not resolved despite normal use of the vehicle. It is frustrating to deal with on a regular basis, and it appears to be the same condition addressed by GM in Technical Service Bulletin 19-NA-206 that is available to view on the NHTSA website. I believe the NHTSA should push General Motors to issue a recall for this problem rather than relying on a Technical Service Bulletin. The issue appears to affect many GM vehicles, and owners should not have to bear the burden of repeated repairs or diagnosis for a known defect. I respectfully request that the NHTSA investigate this issue further and require GM to provide a permanent remedy through a recall.

NHTSA ID
11754013
Incident
May 1, 2026
Powertrain (other)
Filed Jul 30, 2026

"shift to park" issue on a 21 traiblazer causing your car to not being able to shutdown entirely meanwhile the shift is perfectly on Park.

NHTSA ID
11753767
Incident
Oct 9, 2025
Filed Jul 25, 2026

Vehicle displays Shift to Park when vehicle is in park & you push the ignition button & audible chime occurs. Apparently this is a known issue for Chevrolet Trailblazers & Buick Encore GX vehicles model year 2021 & newer. You have to either wiggle the gear shifter several times & depress/wiggle the shift lever button in order to turn off the vehicle. Sometimes it takes 5 minutes to get it to work.

NHTSA ID
11752759
Incident
Jul 1, 2026
EnginePowertrain (other)
Filed Jul 23, 2026

My trailblazer will not shift properly into drive from park or reverse. GM calls this a "loss of forward motion" or "delayed forward engagement" in their service bulletin TSB-24-NA-009. It is a safety issue because you never know when or how long the vehicle will take to engage and allow forward movement. This causes issues when leaving a parking spot or a driveway, especially on busy roads. If the car will not move forward, my family is stuck in the road until it finally engages into gear and allows forward movement. When this occurs, the vehicle engine will shutter and not allow any forward movement. I usually have to move the drive selector back to park and back to drive again. This creates an immediate and unreasonable safety risk because the vehicle will not move for several seconds while I am sitting in traffic. This generates a P2714 code. I had the car looked at by a GM dealer as well as an independent transmission repair shop and both indicate it will likely need a new transmission. GM is fully aware of the defect and has issued a service bulletin, TSB-24-NA-009 to instruct dealers how to diagnose and repair the problem. The bulletin proves a widespread engineering or manufacturing flaw exists. However, GM is treating this as a maintenance issue rather than the severe safety hazard that it is. It is my understanding, GM has since abandoned this transmission on the newer models, further indicating that GM knew these transmissions were not designed well. I am requesting the NHTSA office cross-reference my complaint with GM TSB-24-NA-009 and upgrade the component defect to a mandatory, manufacturer-funded safety recall before it causes a collision or fatal injury. Thank You

NHTSA ID
11752367
Incident
Jun 30, 2026
Engine
Filed Jul 18, 2026

Reduced engine powers caused by turbo charger underboost, at 91200 miles.

NHTSA ID
11751316
Incident
Jul 18, 2026
Powertrain (other)
Filed Jul 16, 2026

Vehicle has 67,000 miles and suffered a catastrophic CVT transmission failure, documented by dealership diagnostic code P2714. The transmission severely slips and exhibits a dangerous 15-second delay to engage forward gear after shifting into Drive. More critically, the vehicle suffers from unpredictable engine stalling. The car completely shut down and stalled in traffic while trying to accelerate into a driving lane after shifting. The vehicle did not trigger any dashboard safety warnings, limp mode, or "Reduced Engine Power" messages prior to shutting down, causing an un-warned loss of motive power on a public road. This creates an immediate, severe risk of a high-speed rear-end collision. General Motors has acknowledged internal CVT chain slippage and hydraulic failure points in Technical Service Bulletins 24-NA-009 and PIP6033 but has not issued a safety recall.

NHTSA ID
11750836
Incident
Jul 1, 2026
Filed Jul 15, 2026

When putting the vehicle in park an error displays, SHIFT TO PARK, and the vehicle does not turn off completely and will ding although you’ve put it in PARK. This has been happening for well over a year and the dealership says it’s a known issue but not a recall. There are times it’s taken up to 25 mins that I’ve had to sit in the vehicle to get the vehicle to turn off by wiggling the shifter or just putting it in drive and back into park, hitting the shifter button, etc. I’ve had to let the battery die in the very beginning because I panicked when it happened and had to get into work. My son has been late to class when he uses the vehicle to drive to school. It’s been such an inconvenience and a safety issue because the vehicle doesn’t turn off and won’t lock and who knows if it’s really securely engaged in the park position or not.

NHTSA ID
11750520
Incident
Feb 11, 2024

Manufacturer communications

A bulletin sent by a manufacturer to its dealers. Not a recall, and repairs are not necessarily free.

PIC6589B

This Preliminary information communicates to the techicians a diagnostic tip if a customer has a complaint of a whistle/wind noise at highway speeds.

PIC6548B

This Preliminary information communicates to the technician the direction needed when encountering an issue with switching between adaptive cruise control and regular cruise control or an issue with automatic high beam feature after the front camera was replaced.

PIT5099J

PI to help diagnose A/C concern

PIT5966F

This Preliminary information communicates an issue with an OTA pending message still displayed after an OTA event and how to reset/clear the message.

PIP6032C

PIP6032B provides diagnostic direction for dealers when encountering transmission leaks

PIC6551B

This Preliminary information communicates to dealer to perform a MEC reset for wireless projection issues

Manufacturers file copies of the bulletins they send to dealers with NHTSA. These often describe diagnostic or repair procedures for a known condition. They are not recalls: repairs described in a bulletin are usually only free if the vehicle is still under warranty or the manufacturer has extended coverage.

Compare model years

Complaint and recall counts across every year of this model

Chevrolet Trailblazer by model year
YearComplaintsRecallsInvestigationsIssue Index
2027000—
2026400—
2025190038.1
2024320042.1
2023620045.5
20221071048.4
2021Viewing1894057.4
2020000—
2019000—
2018000—
2017000—
2015000—
2014100—
2013000—
2009270150.8
20081930145.1
20077325462.1
20061,1078461.6
20051,4662254.1
20041,0812458.0
20039018863.4
20021,149131065.2
2001200035.6
2000260038.7
1999400—
1998000—

Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers. Older model years have had longer for reports to accumulate.