2021 Chevrolet Silverado 4500 recalls & complaints
Source: NHTSA, updated daily. Last checked 2026-10-19. Recalls apply to specific VINs — run your VIN to confirm.
1 safety recall, most serious first
1. Brakes
What's wrong, in plain English: Anything that slows the car down. Treat brake recalls as urgent. The brake pressure sensor assembly may leak brake fluid into the brake pressure switch and cause a short circuit.
What could happen: An electrical short in the brake pressure switch can overheat the circuit and increase the risk of a fire while driving or parked.
The fix: 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 th…
What to do
- Park outside, away from houses, garages and other cars — there is a fire risk even when the vehicle is off.
- Check whether your car is affected: enter your 17-digit VIN at nhtsa.gov/recalls. A recall covers specific VINs, not every 2021 SILVERADO 4500.
- Book a repair at any authorized Chevrolet dealer. Quote NHTSA campaign 25V390000 (manufacturer code N242482680).
- The repair is free. By US law, safety recall repairs cost the owner nothing, no matter the car's age or mileage.
- Manufacturer hotline: 1-866-467-9700.
- Buying this car used? Ask the seller for proof the recall was completed, or run the VIN yourself before paying.
Official wording from NHTSA
Component: SERVICE BRAKES, HYDRAULIC:BRAKE FLUID LOW WARNING:SWITCH/SENSOR/FLOAT
Summary: 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.
Notes:
Useful for owners
- OBD2 code reader — see what the car's computer is reporting
- Compact car fire extinguisher
- 2021 Chevrolet Silverado 4500 owner's manual
Owner complaints filed with NHTSA
Most complained-about parts: Brakes (2), Hydraulic (2).
Complaints are unverified reports from owners. A pattern (many complaints about the same part) matters more than any single one.
Read recent complaints (2)
05/30/2023 · Brakes
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 manufacturer had exceeded a reasonable amount of time for the recall re…
05/02/2023 · Brakes
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 exceeded a reasonable amount of time for the recall repair. The…