2021 CHEVROLET SILVERADO 6500 — Problems, Recalls & Safety Data
N/A
Safety Rating
3
Owner Complaints
1
Recall
2
Service Bulletins
0
Investigations
Overview of the 2021 CHEVROLET SILVERADO 6500
The 2021 CHEVROLET SILVERADO 6500 has received a total of 3 safety complaints filed with the National Highway Traffic Safety Administration (NHTSA). There has been 1 recall campaign affecting this vehicle, covering issues with SERVICE BRAKES, HYDRAULIC:BRAKE FLUID LOW WARNING:SWITCH/SENSOR/FLOAT. 2 technical service bulletins have been issued by General Motors, LLC for this model year. The most commonly reported problem area is the Service Brakes (2 complaints).
Recalls for the 2021 CHEVROLET SILVERADO 6500
NHTSA has recorded 1 recall for the 2021 CHEVROLET SILVERADO 6500, potentially affecting up to 62,468 vehicles.
Recall 25V390000 — SERVICE BRAKES, HYDRAULIC:BRAKE FLUID LOW WARNING:SWITCH/SENSOR/FLOAT
| 62,468 vehicles affected
Defect: General Motors (GM) is recalling certain 2019-2024 Chevrolet Silverado Medium Duty 4500HD, 5500HD, and 6500HD vehicles. The brake pressure sensor assembly may leak brake fluid into the brake pressure switch and cause a short circuit.
Consequence: An electrical short in the brake pressure switch can overheat the circuit and increase the risk of a fire while driving or parked.
Remedy: Owners are advised to park outside and away from structures until the recall repair is complete. Dealers will replace the brake pressure switch wire harness, free of charge. Owner notification letters were mailed September 11, 2025. Owners may contact GM...
View full details →Owner Complaints for the 2021 CHEVROLET SILVERADO 6500
3 complaints have been filed with NHTSA for the 2021 CHEVROLET SILVERADO 6500. Below is a breakdown by vehicle component.
| Component | Complaints | Crashes | Fires | Injuries | Deaths |
|---|---|---|---|---|---|
| Service Brakes | 2 | 0 | 0 | 0 | 0 |
| Exterior Lighting | 1 | 0 | 0 | 0 | 0 |
Most Recent Complaints
See attached document for complaint.
brake line fitting leaking at the main line pressure fitting. this caused brake fluid to leak out and loss of brakes occured.
brake line fitting leaking at the main line pressure fitting. this caused brake fluid to leak out and loss of brakes occured.
Safety Rating for the 2021 CHEVROLET SILVERADO 6500
NHTSA has not yet tested the 2021 CHEVROLET SILVERADO 6500 in its New Car Assessment Program.
Technical Service Bulletins for the 2021 CHEVROLET SILVERADO 6500
General Motors, LLC has issued 2 technical service bulletins (TSBs) for the 2021 CHEVROLET SILVERADO 6500. TSBs are notices sent by manufacturers to their dealers describing a known issue and the recommended repair procedure.
23-NA-032 — ENGINE AND ENGINE COOLING
The informational bulletin advises the tech to use the glow plug bore cleaner to reduce the chance of soot building up on the glow plug causing a premature failure.
22-NA-101 — ELECTRICAL SYSTEM
This technical bulletin provides repair information to correct a customer concern of PTO (Power Take-Off) Kicks Out or Intermittently Disengages Unwanted.
NHTSA Investigations for the 2021 CHEVROLET SILVERADO 6500
There are no NHTSA defect investigations on record for this vehicle.
Other Model Years of the CHEVROLET SILVERADO 6500
- 2019 CHEVROLET SILVERADO 6500 — 0 complaints
- 2020 CHEVROLET SILVERADO 6500 — 0 complaints
- 2021 CHEVROLET SILVERADO 6500 (current)
- 2022 CHEVROLET SILVERADO 6500 — 0 complaints
- 2023 CHEVROLET SILVERADO 6500 — 0 complaints
- 2024 CHEVROLET SILVERADO 6500 — 0 complaints
- 2025 CHEVROLET SILVERADO 6500 — 0 complaints
Other CHEVROLET Models
- CHEVROLET MALIBU — 28,991 total complaints
- CHEVROLET SILVERADO 1500 — 22,175 total complaints
- CHEVROLET IMPALA — 15,197 total complaints
- CHEVROLET TAHOE — 12,511 total complaints
- CHEVROLET EQUINOX — 12,135 total complaints
- CHEVROLET BLAZER — 11,032 total complaints
- CHEVROLET SILVERADO — 10,928 total complaints
- CHEVROLET SUBURBAN — 10,375 total complaints