2021 Chevrolet SILVERADO 6500: complaints, problems and recalls
Explore the records behind recurring owner reports.
Key facts
2 owner complaints analyzed
1 distinct recall campaigns
Not available median reported failure mileage
Scope: 2021 model year. Data snapshot: . 0 complaints include usable failure mileage.
This selection has limited data. It remains available for lookup but is excluded from search indexing.
Most common problems
Service Brakes is the most frequently named component, appearing in 2 of 2 complaints (100.0%). A complaint can name multiple components.
| Topic | Matching reports | Share of complaints |
|---|---|---|
| Braking behavior | 1 | 50.0% |
Topic matches use published keyword rules. They describe mentions, including negations or comparisons, and do not confirm a diagnosis. Read the matching rules.
Component breakdown
Number of unique complaints naming each component. Top eight shown.
| Category | Count |
|---|---|
| Service Brakes | 2 |
| Exterior Lighting | 1 |
Service Brakes: 2; Exterior Lighting: 1
Reported problems by failure mileage
Complaint counts in mileage bands. These are not failure rates per vehicle or mile.
| Category | Count |
|---|---|
| Under 25,000 | 0 |
| 25,000 to 49,999 | 0 |
| 50,000 to 74,999 | 0 |
| 75,000 to 99,999 | 0 |
| 100,000 to 149,999 | 0 |
| 150,000 and above | 0 |
Under 25,000: 0; 25,000 to 49,999: 0; 50,000 to 74,999: 0; 75,000 to 99,999: 0; 100,000 to 149,999: 0; 150,000 and above: 0
No usable failure mileage is recorded. 2 complaints have missing, zero or invalid mileage.
Complaints over time
Year the complaint was filed, not the vehicle model year or incident year. The snapshot year is partial.
| Category | Count |
|---|---|
| 2023 | 1 |
| 2025 | 1 |
2023: 1; 2025: 1
Pattern summary
Service Brakes leads the component reports. Braking behavior appears in 1 complaint narratives. Use these patterns to inspect individual reports and prepare questions for a mechanic.
Calculated from recorded counts. An AI narrative has not been published for this selection.
Examples from the source records
Examples provide context, not a representative sample or a verified diagnosis.
Owner report 11501622 · 2023-01-13 (January 13, 2023)
brake line fitting leaking at the main line pressure fitting. this caused brake fluid to leak out and loss of brakes occured.
Owner-reported narrative. Look up ODI 11501622 at NHTSA ↗
Owner report 11651246 · 2025-03-28 (March 28, 2025)
See attached document for complaint.
Owner-reported narrative. Look up ODI 11651246 at NHTSA ↗
Recall history
1 distinct campaigns affect this selection. Announcement dates below are different from vehicle model years. A campaign may cover multiple years.
25V390000 · Service Brakes, Hydraulic:Brake Fluid Low Warning:Switch/Sensor/Float
Reported: 2025-06-12 (June 12, 2025)
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 customer assistance number at 1-866-467-9700. GM's number for this recall is N242482680. Vehicles in this recall that were previously repaired under 23V266 will need to have the new remedy completed.
NHTSA campaign record ↗