YearToAvoid

2021 GMC Sierra 1500 Brakes Problems

NHTSA lists 24 brake complaints for the 2021 GMC Sierra 1500, about 4% of its 570 total complaints for the year. Median mileage at failure was 21,539 miles. No related recalls are listed for this issue.

Brakes complaints
24
4% of 570
Crashes reported
1
Fires reported
1
Injuries reported
0
Median mileage
21,539 mi
Related recalls
0

Typical brake symptoms owners report

  • Owners report sudden brake failure warnings appearing on the dash, sometimes with the vehicle continuing to roll and, in one case, striking another vehicle in stop-and-go traffic.
  • Several complaints describe combined power steering, ESC, and brake warning messages appearing together, along with steering wheel vibration or stiffness and difficulty stopping the truck.
  • Some owners with trailer brake controllers report the system disconnecting and reconnecting intermittently, showing a check-trailer warning on the instrument panel.
  • One owner reported smoke and a fire linked to the trailer brake controller that damaged the vehicle interior.
  • A few complaints mention the brake pedal feeling loose or rough, with one owner needing a master cylinder replacement around 22,500 miles.
  • One report describes the brakes locking up momentarily while towing in tow/haul mode, causing the trailer to fishtail.

When 2021 GMC Sierra 1500 brake complaints were filed

First complaint Dec 7, 2020, latest Sep 9, 2026.

2021 GMC Sierra 1500 brakes complaints: complaints filed per month2Dec 2020May 2022Dec 2022Aug 2023May 2024Jan 2025Sep 2025Jul 2026
24 complaints filed with NHTSA from Dec 2020 to Sep 2026; peak Jun 2025 (2).

Brakes recalls for the 2021 GMC Sierra 1500

No safety recalls on record for this model year.

Brakes complaints by Sierra 1500 model year

Raw complaint counts per model year; newer years have had less time to accumulate complaints.

  1. 200592 (31%)
  2. 200697 (48%)
  3. 200741 (13%)
  4. 200817 (4%)
  5. 200913 (5%)
  6. 20107 (3%)
  7. 201121 (6%)
  8. 201215 (10%)
  9. 20138 (5%)
  10. 2014201 (24%)
  11. 2015250 (32%)
  12. 2016118 (31%)
  13. 2017129 (30%)
  14. 201848 (15%)
  15. 2019124 (18%)
  16. 202060 (13%)
  17. 202124 (4%)
  18. 202231 (5%)
  19. 202317 (4%)
  20. 202412 (3%)
  21. 20256 (5%)

Frequently asked questions

How many brake complaints does the 2021 GMC Sierra 1500 have?
NHTSA lists 24 brake-related complaints for the 2021 Sierra 1500, which is about 4% of the 570 total complaints filed for that model year.
Is there a brake recall for the 2021 GMC Sierra 1500?
No related recalls are listed in the data for the brake complaints on the 2021 Sierra 1500.
At what mileage do brake problems usually show up on the 2021 Sierra 1500?
The median mileage at failure among reported brake complaints is 21,539 miles.
What kind of brake problems do owners report on the 2021 Sierra 1500?
Owners describe sudden brake warning messages combined with steering and stability control alerts, intermittent trailer brake controller disconnects, a brake controller fire, and occasional brake lockup while towing.
Were there any crashes or injuries linked to brake complaints on the 2021 Sierra 1500?
The data shows 1 crash and 1 fire among the 24 brake complaints, with 0 injuries reported.

Sources: NHTSA Office of Defects Investigation complaint and recall databases; U.S. EPA fuel economy data; NHTSA 5-Star Safety Ratings. Complaints are unverified owner reports.

Data updated Sep 24, 2026. Read the methodology and data sources. The Complaint Index is based on NHTSA owner complaints and recalls; it is not a reliability rating.