2021 Chevrolet Silverado 2500HD: Service Brakes complaints
Owner-reported issue (NHTSA complaints, not a recall)
Symptoms
NHTSA has 12 owner complaints for the 2021 Chevrolet Silverado 2500HD that list the service brakes component. Complaints are individual owner reports, not verified defects.
Examples:
- NHTSA complaint ODI #11728599 (filed 04/01/2026): “What component or system failed or malfunctioned, and is it available for inspection upon request? - the parking brakes were engaged and would not release / yes, it is available for inspection how was your safety or the safety of others put at risk? i was in traffic stopped at a train track and coul…”
- NHTSA complaint ODI #11716406 (filed 02/07/2026): “On 01/16/2026, quirk chevrolet completed product safety recall n242482680 for the brake pressure switch connector fire on my vehicle. shortly after, my vehicle would come to an abrupt stop on its own while driving. this happened twice on my way home and then the third time at home at which point, …”
- NHTSA complaint ODI #11699620 (filed 11/15/2025): “Took truck to dealer with concern of higher than normal braking force needed. couldn’t verify concern. looked today under the steering column and the brake booster is leaking fluid inside the cabin of the truck when the brake pedal goes through the firewall. there was almost no brake fluid inside th…”
Likely causes
These complaints do not establish a single root cause; read the examples above and get a diagnosis.
Fix, in plain English
No single fix is established by these reports. Check your VIN for open recalls at nhtsa.gov/recalls, ask a dealer about technical service bulletins (TSBs) or extended warranty coverage, then have the system diagnosed.
DIY difficulty: Moderate
Pads and rotors are a common DIY job with hand tools and a jack; ABS/hydraulic faults need a scan tool. (Our assessment.)
Cost
No sourced cost range for this issue. Get a written quote after diagnosis.
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