The 2021 Buick Encore GX has 2 NHTSA recall campaigns affecting an estimated 139,077 vehicles. Recall repairs are always free at any authorized dealer. Owners have filed 66 complaints with NHTSA, most often about the engine. Last updated July 13, 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…
Complaints by component
ENGINE
15
POWER TRAIN
10
FUEL/PROPULSION SYSTEM
7
SERVICE BRAKES
7
1injuries
UNKNOWN OR OTHER
6
ELECTRICAL SYSTEM
4
EQUIPMENT
2
VEHICLE SPEED CONTROL
2
AIR BAGS
1
1crashes1injuries
ENGINE AND ENGINE COOLING
1
Total complaints66
What owners report
Verbatim reports filed with NHTSA, lightly edited for readability and with personal
information removed.
“While driving check engine suddenly illuminated following by a "warning reduced engine power" message. Car began driving sluggish and driving over 35mph caused serious trembling. After multiple diagnosis with several engine codes pointing to issues with ecm, and mass air flow sensor, and the…”
“While driving check engine suddenly illuminated following by a "warning reduced engine power" message. Car began driving sluggish and driving over 35mph caused serious trembling. After multiple diagnosis with several engine codes pointing to issues with ecm, and mass air flow sensor, and the…”
“The contact owns a 2021 buick encore gx. The contact stated that while driving at an undisclosed speed, the brake pedal was firm while depressed, with several unknown warning lights illuminated. The vehicle was taken to an independent mechanic, and several unknown diagnostic trouble codes were…”
“Due to defective lin bus 2 failure to read mass air flow sensor, vehicle suddenly goes into limp mode. This speed control issue is documented in gm technical service bulletins (tsbs) #22-na-008 and pip5934, 2022.”
“A 2021 buick encore gx with 66,828 miles experienced sudden transmission failure while driving. The vehicle lost forward gear engagement and began slipping, creating an immediate safety risk to the driver and other motorists due to unexpected loss of vehicle propulsion and control. The vehicle was…”
“My vehicle suddenly stalled and completely shut off while I was driving. No warning lamps, messages or other symptoms to alert me there was any engine issues. I was definitely put in danger as I was driving at rush hour in a 6 lane busy us 1 federal highway. The vehicle was stalled, without any…”
“My vehicle suddenly stalled and completely shut off while I was driving. No warning lamps, messages or other symptoms to alert me there was any engine issues. I was definitely put in danger as I was driving at rush hour in a 6 lane busy us 1 federal highway. The vehicle was stalled, without any…”
“Turbocharger is defective. Reduced engine power. Engine power reduced shows up on my dashboard. I bought the car brand new at lindsey buick in ohio. This car is too young for this problem. Lindsey buick and gm need to stand up to accountability and transparency when it comes to delivering top…”
Recall, complaint, and investigation records from official NHTSA datasets (FLAT_RCL,
FLAT_CMPL, FLAT_INV), synced weekly. Counts reflect NHTSA records for the 2021 Buick Encore GX as of
July 13, 2026. Complaint narratives are consumer-submitted and unverified. This page
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