The 2021 Chevrolet Trailblazer has 4 NHTSA recall campaigns affecting an estimated 139,202 vehicles. Recall repairs are always free at any authorized dealer. Owners have filed 259 complaints with NHTSA, most often about the unknown or other. Last updated July 5, 2026.
Recall campaigns
EQUIPMENT21V4400002021-06-10135,400 affected
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.
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…
SERVICE BRAKES20V5880002020-09-243,677 affected
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…
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…
SEATS20V5370002020-09-03105 affected
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.
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…
EQUIPMENT20V2950002020-05-2120 affected
Defect
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…
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.
Verbatim reports filed with NHTSA, lightly edited for readability and with personal
information removed.
“My 2021 chevy trailblazer rs is experiencing issues with the infotainment system and the onstar module they have stopped working and I have no backup camera and this issue is a safety concern to me and anyone who rides with me I have contacted both gm and onstar and got nowhere with them after I…”
“Shift assembly kit, it is available. Dealership has to order part for inspection. Still passed inspection. Possible unintended rollaway accidents. Not being able to lock the vehicle as well. Yes, it’s been confirmed. There’s also so many class action lawsuits against gm about this matter. Why…”
“While driving on thursday, june 4, 2026, the vehicle experienced a sudden and complete failure of the electronic braking/power brake assist system. Simultaneously, multiple safety warnings illuminated on the dashboard display, including a persistent service wrench icon, a traction control warning…”
“While driving on thursday, june 4, 2026, the vehicle experienced a sudden and complete failure of the electronic braking/power brake assist system. Simultaneously, multiple safety warnings illuminated on the dashboard display, including a persistent service wrench icon, a traction control warning…”
“While driving on thursday, june 4, 2026, the vehicle experienced a sudden and complete failure of the electronic braking/power brake assist system. Simultaneously, multiple safety warnings illuminated on the dashboard display, including a persistent service wrench icon, a traction control warning…”
“Amplifier lost connection, so speakers won’t work, collision warning won’t sound, and turn signal won’t sound.”
“I needed to have my muffler welded in november to pass inspection. I was told I would likely need the entire thing replaced in a year. I now hear another exhaust leak, and i’m preparing for a hefty car travel and have to deal with trying to get it fixed in 10 days time. This is ridiculous on a 5…”
“Dealership linwood inspected vehicle and certified power and ground module has internal fault-faulty front camera module.”
Recall, complaint, and investigation records from official NHTSA datasets (FLAT_RCL,
FLAT_CMPL, FLAT_INV), synced weekly. Counts reflect NHTSA records for the 2021 Chevrolet Trailblazer as of
July 5, 2026. Complaint narratives are consumer-submitted and unverified. This page
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