Non stopbbreak noise. No matter what you do, what is or isn't added, how clean they are, they constantly squeak and loud! Dealers won't help. Tell you to get on the brakes hard. That helps for a few minutes! Over 50k fix the brakes!!!
2021 Chevrolet Silverado HD brakes problems
severe 10 complaints filed with NHTSA · avg repair $450 · see brakes across all vehicles →
Complaints
10
Recalls
0
Avg fix
$450
1crash
What stands out
Among the 5 model years of Chevrolet Silverado HD in our records for brakes problems, this one ranks #2 by owner-complaint volume.
No new NHTSA brakes complaint has been filed on this vehicle in over 4 years — the issue may be aging out of the active population.
The failure pattern owners describe
Brake problems on 2021 Silverado HD trucks span from design and manufacturing defects to post-recall complications. The most dangerous issue is sudden parking brake engagement after the brake pressure switch fire recall (N242482680)—owners describe abrupt stops with zero warning while driving, unable to restart motion without a tow. One owner identified potential causes as a faulty jumper harness or a software update, and notes this has become a known problem online.
Equally serious are total brake failures. One owner lost all braking power at a McDonald's drive-through; another experienced loss of brakes with check engine and traction control lights two miles into a drive. Both created immediate crash hazard. A third reported hard brake pedal response and discovered the brake booster leaking fluid into the cabin—a slow bleed that leaves the reservoir nearly empty.
Parking brake actuator failure immobilized one truck in traffic. Loose rear brake bolts caused squeaking at 15,000 miles. But the most widespread complaint is relentless brake squeal at low speeds (under 10 MPH) starting from new—owners say it persists regardless of pad replacement or cleaning, and Chevy refuses warranty coverage, telling owners dealers can fix it only at their own expense.
Same Chevrolet Silverado HD brakes reports on nearby years: 2024
Failure modes owners describe
Post-Recall Parking Brake / Emergency Brake Engagement
After brake pressure switch recall N242482680, vehicles experience sudden unintended engagement of parking brake while driving, causing abrupt stops with no ability to move forward or backward. Consumer reports identify faulty jumper harness (missing protective tape), defective C-clip in cylinder, or software update automatically engaging the parking brake as possible root causes.
When: Shortly after recall work completed (01/16/2026 in one case)
Symptoms owners cite: Vehicle stops abruptly while driving; Cannot move forward or backward after stopping; No warning lamps or messages before failure; Issue reproduced across multiple 2021 Chevy 5500 models online
Repairs/costs cited: Dealership required owner to pay out-of-pocket for repairs pending future official GM/Chevy recall; replacement of brake pressure switch wiring harness or jumper harness referenced
Recalls/TSBs owners mention: Recall N242482680 (Brake Pressure Switch Connector Fire) completed; no official secondary recall acknowledged despite post-recall failures reported
Brake Booster Leaking Fluid Into Cabin
Brake booster develops internal leaks, allowing brake fluid to escape into the cabin through the firewall area where the brake pedal passes through. Fluid loss from reservoir creates risk of complete brake failure. Multiple examples noted at low mileage (10,000–22,000 miles).
When: As early as 10,000 miles; documented at 22,000 miles
Symptoms owners cite: Higher than normal braking force needed to stop; Brake fluid pooling under dashboard/steering column; Brake fluid reservoir nearly empty; Complete loss of brake function possible
Repairs/costs cited: Complete brake booster assembly replacement required
Rear Brake Actuator Failure / Parking Brake Stuck
Rear parking brake actuator fails, leaving parking brakes engaged and unable to release. Vehicle immobilized in traffic. Dealership diagnosis confirmed faulty actuator requiring replacement.
When: Not specified
Symptoms owners cite: Parking brakes engaged and would not release; Vehicle immobilized and unable to move; Parking brake function described as 'nonexistent' during diagnosis; Potential risk of driving with engaged parking brakes undetected
Repairs/costs cited: Rear actuator replaced under warranty by dealership
Brake Pulsation / Loose Rear Brake Bolt
Abnormal squeaking from rear brakes during braking caused by brake pulsation related to loose rear brake bolt. Independent mechanic tightened bolt and resolved issue.
When: At approximately 15,000 miles
Symptoms owners cite: Abnormal squeaking sound from rear while braking at various speeds
Repairs/costs cited: Rear brake bolt tightened; no parts replaced
Complete Brake Failure While Driving
Total loss of braking power accompanied by illumination of check engine light and traction control light. Brake pedal described as having no effect. Incident occurred 2 miles from start of drive with no prior warning.
When: During routine drive; occurred early in trip
Symptoms owners cite: Check engine light illuminates; Traction control light illuminates; All braking power lost immediately; No prior warning signs
Codes mentioned: Check Engine Light, Traction Control Light
Repairs/costs cited: Vehicle towed to dealership; no repair details provided
Complete Brake Failure at Drive-Through
Brakes fail suddenly at low speed while in drive-through. Brake pedal goes to floor with no resistance. Vehicle immobilized by engaging park mode and engine shutdown. Brakes function normally after engine restart.
When: Not specified
Symptoms owners cite: Complete loss of braking pressure; Brake pedal goes to floor; Intermittent failure (brakes work after restart)
Persistent Brake Squeal
Continuous squealing noise from brakes occurs at low speeds (under 10 MPH). Noise present from new on multiple examples. Temporary relief only from hard braking. Affects vehicles across mileage spectrum and has generated numerous online complaints.
When: From new; persists across mileage from 5,500 miles to 50,000+ miles
Symptoms owners cite: Loud squealing at low speeds (under 10 MPH); Noise during light braking; Persistent despite cleaning and maintenance; Temporary relief from hard braking only
Repairs/costs cited: Dealers offer brake pad replacement at owner cost; no permanent solution reported
Recalls/TSBs owners mention: Chevy stated nothing can be done; dealers decline warranty coverage
Synthesized from 10 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 3 most recent
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 the reservoir causing the brakes to fail with no warning. Looked at similar trucks and all have brake…
My fiance started the truck. Drove about 2 miles from my mothers house, the check engine light came on. The traction control light came on and then she informed me that it felt like all braking power was lost. Truck is being towed to dealership. Could have killed or badly injured someone.
Had brakes trouble with your 2021 Chevrolet Silverado HD?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the brakes problem on the 2021 Chevrolet Silverado HD?
It's a meaningful issue. 10 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $450.
At what mileage does the brakes typically fail?
Based on the 10 complaints filed, brakes issues most often appear around 15,000 miles. Some report problems earlier; some make it well past 150,000 with no symptoms. Maintenance habits matter — vehicles that received timely fluid services and were not regularly overworked tend to last longer.
What does it cost to fix?
Independent shops typically charge around $450 for brakes repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to brakes?
No active recalls currently cover brakes issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2021/Chevrolet/Silverado HD.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.