Home › Chevrolet › Silverado 4500 › 25V768000

Chevrolet Silverado 4500 Brake Wiring Repair Redo

NHTSA campaign 25V768000 · Reported Nov 6, 2025 · General Motors, LLC

medium How serious is it? About this label

Damaged brake wires can cause the power brake assist to fail, which raises the risk of a crash. The notice does not tell owners to stop driving.

Key facts

NHTSA campaign number	25V768000
Reported to NHTSA	Nov 6, 2025
Manufacturer	General Motors, LLC
Part affected	Service Brakes, Hydraulic:power Assist
Vehicles covered	2 model/year combinations, model years 2019–2020
Do-not-drive advisory	No
Park-outside advisory	No
Repair	Free at any franchised dealer

What's wrong, in plain English

General Motors is recalling certain Chevrolet Silverado 4500HD, 5500HD, and 6500HD trucks. These vehicles already had a brake wiring fix done under an earlier recall, but the wire harness used in that repair was installed without protective tape. Without this tape, the wires can become damaged. Because of this, GM says these trucks need to have that earlier repair redone, with the tape properly added before the wiring harness is put back in place.

What you should do

1. Check your VIN at nhtsa.gov/recalls to see if your truck is included.
2. Contact your GM dealer, or call GM customer assistance at 1-866-467-9700.
3. The repair is free.

Where do I find my VIN, and what do I tell the dealer?

Your VIN is the 17-character code on the lower left of the windshield, on your registration and usually on your insurance card. Enter it at nhtsa.gov/recalls to see whether this recall is still open on your car. When you call the dealer, say you have an open safety recall and give them NHTSA campaign number 25V768000. More in how recalls work.

Affected vehicles (2)

2019 Chevrolet Silverado 5500
2020 Chevrolet Silverado 4500

Who to contact

Chevrolet — official Chevrolet recall lookup

Customer service: 1-800-222-1020

Any franchised dealer for the brand can do the repair. Phone numbers are taken from manufacturer sites and recent NHTSA notices; if one has changed, the number in your own recall letter is the one to use.

The bigger picture

Chevrolet Brake Recalls Include Fire Risks and Reduced Brake Assist · all 18 Chevrolet recalls in this area

Other Chevrolet Silverado 4500 recalls

Jun 12, 2025Chevrolet Medium Duty Silverado Brake Sensor Fire Riskcritical

Official notice

Component: SERVICE BRAKES, HYDRAULIC:POWER ASSIST
Summary: 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.
Safety risk: Damaged brake jumper wires can result in power brake assist failure, increasing the risk of a crash.
Remedy: 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.

Verify your specific vehicle by VIN at nhtsa.gov. Recall repairs are free of charge by law.