repaired · 2026 Q3
Brake fluid low warning: switch/sensor/float
Park outsideRisk. An electrical short in the brake pressure switch can overheat the circuit and increase the risk of a fire while driving or parked.
2021 Chevrolet Silverado 4500Problems, recalls & complaints
NHTSA has logged 2 owner complaints about the 2021 Chevrolet Silverado 4500, most often about the service brakes, hydraulic. It is covered by 1 safety recall, and for recall 25V-390 the manufacturer reports only 53% of affected cars repaired.
Source: NHTSA complaints, recalls, investigations and manufacturer recall reports, through June 12, 2025. Updated daily.
Complaints by system
Where the 2021 Chevrolet Silverado 4500 has problems
2 complaints grouped by the system owners reported.
2Service brakes, hydraulic
| System | Complaints | Crash, fire or injury |
|---|---|---|
| Service brakes, hydraulic | 2 | 0 |
Source: NHTSA Office of Defects Investigation. Complaints are submitted by the public and are not verified by NHTSA.
1 recall
2021 Chevrolet Silverado 4500 recalls and how many were fixed
Each ring shows the share of affected cars repaired, from the manufacturer’s latest quarterly report to NHTSA. Recall repairs are free at authorized dealers.
Recalls apply to specific cars. To see whether a recall is still open on yours, enter the 17-character VIN at nhtsa.gov/recalls or with Chevrolet.
Best & worst years
2021 vs. every other Silverado 4500 year
Bars show complaints per model year. Colors show the CarFlaw verdict: complaints weighted for crashes, fires and injuries, adjusted for years on the road and compared with the Silverado 4500 median. How we score
'19'20'21'22'23'24
- Avoid
- Caution
- Solid
- Best
- Not rated
In owners' words
What Silverado 4500 owners report
Recent service brakes, hydraulic complaints filed with NHTSA, shortened. Personal details are removed.
The contact owns a 2021 Chevrolet Silverado 4500HD. The contact received notification of NHTSA Campaign Number: (TBD); Manufacturer Recall Campaign Number: N222375270 (Service Brakes, Hydraulic) however, the part to do the recall repair was not yet available. The contact stated that the…
The contact owns a 2021 Chevrolet Silverado 4500HD. The contact received notification of Manufacturer Recall Number: N222375270 (Service Brakes, Hydraulic), NHTSA Campaign Number: (TBD) however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had…
Own a 2021 Silverado 4500?
Decode your VIN to see the recalls for your exact car, then confirm open recalls with NHTSA.