The vehicle dossier US · 2021
2021 Chevrolet
TRAILBLAZERProblems & recalls
193 distinct owner reports in the NHTSA snapshot. Other components appears in 79 of them. Explore what was reported—and which official actions are on file.
01 / Owner-reported evidence
What owners reported.
Categories attached to 193 distinct reports. A report can mention more than one component, so category totals can overlap.
See original component labels
These are reports made to NHTSA, not verified diagnoses. More reports can reflect more vehicles, more time on the road, or greater reporting activity.
The reporting timeline
When reports arrived.
Reports by year filed, not by the year a problem occurred. Showing the latest 7 years with reports.
20,000 miles is the median among 32 reports with usable mileage. The middle half spans 2,100–40,000 miles.
This describes the submitted reports. It does not predict when a vehicle will fail.
02 / Official safety campaigns
4 recall campaigns on file.
A campaign can cover only certain production dates or configurations. The count does not tell you whether an individual car has an open recall.
EQUIPMENT:MECHANICAL:ACCESSORY SCISSOR/SCREW/BOTTLE JACK/LIFT:STANDCampaign 21V440000
Reported concern
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.
Manufacturer’s stated response
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.
Manufacturer campaign: A212335470
Read campaign 21V440000 at NHTSASERVICE BRAKESCampaign 20V588000
Reported concern
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.
Manufacturer’s stated response
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.
Manufacturer campaign: A202307260
Read campaign 20V588000 at NHTSASEATS:CRITICAL FASTENERSCampaign 20V537000
Reported concern
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.
Manufacturer’s stated response
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.
Manufacturer campaign: A202304380
Read campaign 20V537000 at NHTSAEQUIPMENT:OTHER:LABELSCampaign 20V295000
Reported concern
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."
Manufacturer’s stated response
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.
Manufacturer campaign: A202304070
Read campaign 20V295000 at NHTSA03 / The manufacturer’s record
Instructions. Updates. Responses.
753 distinct communications list this model-year. Showing the latest 12. A matching model-year does not establish that every engine, trim or reported symptom is covered.
PIP4902WThis preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.NHTSA ID 11037253
This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
Components: UNKNOWN OR OTHER. Confirm detailed applicability in the original document.
Source record 11037253 at NHTSAPIT5995BThis Preliminary Information provides the dealer information of the location of the rear seat child anchors.NHTSA ID 11037252
This Preliminary Information provides the dealer information of the location of the rear seat child anchors.
Components: UNKNOWN OR OTHER. Confirm detailed applicability in the original document.
Source record 11037252 at NHTSAPIT6196AThis Preliminary Information provides a diagnostic tip for diagnosing an issue with Cruise Control, Adaptive Cruise and Lane Keep Assist Turns Off or Inoperative.NHTSA ID 11036693
This Preliminary Information provides a diagnostic tip for diagnosing an issue with Cruise Control, Adaptive Cruise and Lane Keep Assist Turns Off or Inoperative.
Components: UNKNOWN OR OTHER. Confirm detailed applicability in the original document.
Source record 11036693 at NHTSAPIC6551CThis Preliminary information communicates to dealer to perform a MEC reset for wireless projection issuesNHTSA ID 11036392
This Preliminary information communicates to dealer to perform a MEC reset for wireless projection issues
Components: UNKNOWN OR OTHER. Confirm detailed applicability in the original document.
Source record 11036392 at NHTSAPIC6589BThis Preliminary information communicates to the techicians a diagnostic tip if a customer has a complaint of a whistle/wind noise at highway speeds.NHTSA ID 11035696
This Preliminary information communicates to the techicians a diagnostic tip if a customer has a complaint of a whistle/wind noise at highway speeds.
Components: UNKNOWN OR OTHER. Confirm detailed applicability in the original document.
Source record 11035696 at NHTSAPIC6548BThis 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 …NHTSA ID 11035349
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.
Components: UNKNOWN OR OTHER. Confirm detailed applicability in the original document.
Source record 11035349 at NHTSAPIT5099JPI to help diagnose A/C concernNHTSA ID 11035340
PI to help diagnose A/C concern
Components: UNKNOWN OR OTHER. Confirm detailed applicability in the original document.
Source record 11035340 at NHTSAPIT5966FThis Preliminary information communicates an issue with an OTA pending message still displayed after an OTA event and how to reset/clear the message.NHTSA ID 11034769
This Preliminary information communicates an issue with an OTA pending message still displayed after an OTA event and how to reset/clear the message.
Components: UNKNOWN OR OTHER. Confirm detailed applicability in the original document.
Source record 11034769 at NHTSAPIP6032CPIP6032B provides diagnostic direction for dealers when encountering transmission leaksNHTSA ID 11033723
PIP6032B provides diagnostic direction for dealers when encountering transmission leaks
Components: UNKNOWN OR OTHER. Confirm detailed applicability in the original document.
Source record 11033723 at NHTSAPIC6423APi created to provide GM dealers with information on gathering information for projection issueNHTSA ID 11032764
Pi created to provide GM dealers with information on gathering information for projection issue
Components: UNKNOWN OR OTHER. Confirm detailed applicability in the original document.
Source record 11032764 at NHTSAPIC6551BThis Preliminary information communicates to dealer to perform a MEC reset for wireless projection issuesNHTSA ID 11032763
This Preliminary information communicates to dealer to perform a MEC reset for wireless projection issues
Components: UNKNOWN OR OTHER. Confirm detailed applicability in the original document.
Source record 11032763 at NHTSAPIP6029AThis PI instructs dealers to install foam around the shifter cable to stop rattlingNHTSA ID 11031713
This PI instructs dealers to install foam around the shifter cable to stop rattling
Components: UNKNOWN OR OTHER. Confirm detailed applicability in the original document.
Source record 11031713 at NHTSARecords below contain the NHTSA bulk summary unless a document-reviewed explainer is linked. A service bulletin is not a safety recall or a promise of a free repair. Records may be revised or superseded; verify the current document with the manufacturer.
04 / Agency investigations
Official inquiries.
An investigation is an inquiry into a potential concern. Its presence does not establish a defect, and a closed case does not certify a car’s condition.
Your next step
Take good questions
to the inspection.
Use these prompts with a qualified inspector. This page is research, not a diagnosis or a substitute for a hands-on inspection.