GM recalls 2019–2020 Chevrolet Silverado 4500HD, 5500HD and 6500HD vehicles over brake wire harness missing protective tape
A brake jumper wire harness installed in an earlier repair under recall 25V390 was assembled without protective tape, which can let the wires get damaged and cause power brake assist failure, raising the risk of a crash.
What to do
Dealers will remove the wire harness, apply protective tape, and reinstall it free of charge. Owners may contact GM customer assistance at 1-866-467-9700 and mention GM's recall number N252531990.
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Recall details
- Product
- Chevrolet Silverado 4500, Silverado 6500, Silverado 5500 2019–2020
- Company
- General Motors, LLC
- Hazard
- Damaged brake jumper wires can result in power brake assist failure, increasing the risk of a crash.
- Units
- 891 vehicles
- Owner notification
- December 3, 2025
- Reported to NHTSA
- November 6, 2025
- Identifiers
- NHTSA campaign number: 25V768000
- Manufacturer campaign number: N252531990
- Model years: 2019–2020
The headline, summary and steps above are written in plain English from the official notice below. Identifiers are copied exactly as the agency published them. Always check the official notice before you act.
Official notice
The notice's own wording from NHTSA.
- Component
- SERVICE BRAKES, HYDRAULIC:POWER ASSIST
- Defect
- General Motors, LLC (GM) is recalling certain 2019-2020 Chevrolet Silverado Medium Duty 4500HD, 5500HD, and 6500HD vehicles. These vehicles were remedied under NHTSA Recall 25V390 with a brake jumper wire harness that was assembled without protective tape. A wiring harness that is missing protective tape can allow the wires to become damaged.
- Consequence
- Damaged brake jumper wires can result in power brake assist failure, increasing the risk of a crash.
- Corrective action
- Dealers will remove the installed wire harness, apply protective tape, and reinstall the wire harness, free of charge. Owner notification letters are planned to be mailed December 22, 2025. Owners may contact GM customer assistance number at 1-866-467-9700. GM's number for this recall is N252531990. Vehicles in this recall were previously repaired under 25V390 and will need to have the new remedy completed. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov beginning November 6, 2025.
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