NHTSA // SAFETY RECORD
2021 Chevrolet Silverado 4500 Safety Record
The 2021 Chevrolet Silverado 4500 has not been crash-tested by NHTSA, so it carries no Safety Index. Its federal safety record shows 1 recall and 2 owner complaints on file.
Updated Oct 1, 2026 from NHTSA data · Reviewed by Ivanna Verstliar
CRASH
DATANot crash-tested
The 2021 Chevrolet Silverado 4500 carries no federal crash-test ratings, as NHTSA has not evaluated this model year. This absence of data means no Safety Index can be computed, and no star ratings are available for consumer guidance. The safety record, however, is marked by a Heavy recall and complaint burden band. Notably, one active recall campaign advises owners to park the vehicle outside or refrain from driving it due to a critical issue with the brake pressure system. This is supported by two unverified owner complaints, both referencing service brake problems. The lack of crash-test data for the 2021 Silverado 4500 does not allow for an assessment of its crashworthiness.
The 2021 Chevrolet Silverado 4500 was not crash-tested by NHTSA, carries a Heavy recall and complaint burden band, and has one active recall campaign per NHTSA records at nhtsa.gov.
MotorCaliber Safety Desk // NHTSA data, verified Oct 1, 2026
- shoppers who want the full federal safety picture in one place
| NHTSA crash test | Not crash-tested |
|---|---|
| Recall and complaint burden | Heavy |
| Recalls on file | 1 (includes park-outside) |
| Owner complaints | 2 (unverified allegations) |
| Data verified | Oct 1, 2026 |
ANALYSISHow safe is the 2021 Chevrolet Silverado 4500?
The 2021 Chevrolet Silverado 4500 carries a critical “park outside” or “do not drive” recall related to a brake pressure sensor. This single campaign, affecting a broad spectrum of Silverado HD medium-duty trucks, indicates that potential brake fluid warning failure is severe enough to warrant restricted vehicle use until rectified. Two owner complaints on file for this model year directly relate to brake and hydraulic component issues, further underscoring that brake system performance is the primary safety concern for the 2021 Silverado 4500. No crash test data or star ratings are available for this vehicle.
NHTSA // RECALLSDoes the 2021 Chevrolet Silverado 4500 have any recalls?
The 2021 Silverado 4500 carries one recall campaign targeting the service brakes, specifically the hydraulic brake fluid low-warning switch, sensor, or float. GM has designated this a park-outside or do-not-drive campaign, meaning affected owners are advised not to garage the vehicle indoors and, depending on guidance, may be told not to drive it until the remedy is completed. Shoppers and current owners should verify their VIN status immediately.
SERVICE BRAKES, HYDRAULIC:BRAKE FLUID LOW WARNING:SWITCH/SENSOR/FLOAT25V390000
Risk: 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 un
Reported 2025-06-12
NHTSA // COMPLAINTSWhat do owners report about the 2021 Chevrolet Silverado 4500?
Two owner complaints have been reported to NHTSA for the 2021 Silverado 4500. Both allege problems with the service brakes and hydraulic system. These are unverified consumer allegations and have not been confirmed as defects by NHTSA or GM.
2 owner complaints on file. These are unverified allegations reported to NHTSA.
USED BUYERWhat should used buyers know about the 2021 Chevrolet Silverado 4500?
A critical safety consideration for the 2021 Silverado 4500 involves a brake-system recall. Potential owners should use the free NHTSA VIN lookup at nhtsa.gov to verify that this recall has been addressed on any specific unit before purchase. An unresolved "park-outside" or "do-not-drive" recall is a material safety concern, not a routine maintenance issue.
- The 2021 Silverado 4500 has not been crash-tested by NHTSA, so no federal star ratings or Safety Index score exist for this model year.
- A park-outside or do-not-drive recall is active for the 2021 Silverado 4500, targeting the hydraulic brake fluid low-warning switch, sensor, or float; owners should verify their VIN status at nhtsa.gov immediately.
- Both of the two unverified owner complaints on file for this model year allege problems with the service brakes and hydraulic system, matching the component area named in the recall.
- The Heavy burden band assigned to this model year reflects recall and complaint activity only and is not a substitute for a crash-test rating; no tested sibling years are available to provide a crash-safety reference point.
RANKINGSWhere the 2021 Chevrolet Silverado 4500 places
The 2021 Chevrolet Silverado 4500 qualifies for these MotorCaliber safety rankings:
FAQ2021 Chevrolet Silverado 4500 safety questions
Was the 2021 Chevrolet Silverado 4500 crash-tested by NHTSA?
No. NHTSA has not run a New Car Assessment Program crash test on this configuration, so it carries no Safety Index. Its safety record here is built from 1 recall and 2 owner complaints on file.
How many recalls does the 2021 Chevrolet Silverado 4500 have?
According to NHTSA recall data, 1 vehicle recall is on file for the 2021 Chevrolet Silverado 4500, including a park-outside or do-not-drive campaign, which is the most serious class of recall. Confirm your VIN at nhtsa.gov to see which apply to your car.
How many complaints have owners filed about the 2021 Chevrolet Silverado 4500?
According to NHTSA's complaint database, 2 owner complaints are on file for the 2021 Chevrolet Silverado 4500. These are unverified allegations submitted by owners, not confirmed defects.
Cross-check this record against independent expert reviews and the live NHTSA database before you buy.
- DATA Pulled directly from NHTSA: the recallsByVehicle and complaintsByVehicle records for the Chevrolet Silverado 4500 2021.
- SCORE This configuration was not crash-tested by NHTSA, so it carries no Safety Index. We report its recall and complaint record only.
- EDITED Written by the MotorCaliber Safety Desk and reviewed for accuracy and plain-language clarity by Ivanna Verstliar, Editor, against the source figures on this page.
- VERIFIED Data last synced Oct 1, 2026. Recalls change; confirm your VIN at nhtsa.gov/recalls. See our corrections policy and disclosure.