General Motors (GM) has issued a major safety recall affecting 62,468 Chevrolet Silverado Medium Duty trucks—specifically the 4500HD, 5500HD, and 6500HD models from 2019 to 2024. The issue involves a faulty brake pressure sensor that can leak brake fluid into the pressure switch, potentially causing an electrical short and engine compartment fire, even when the vehicle is turned off and parked.
What Caused the Problem
The defect was traced to a degraded rubber diaphragm in the brake pressure sensor. Over time, brake fluid can leak through this weakened diaphragm and seep into the sensor’s wiring harness. This fluid intrusion can create an electrical short, generating excessive heat and potentially igniting a fire.
Incidents Reported
- GM has received over 160 field reports related to this defect.
- At least one confirmed fire has occurred due to this issue, though no injuries or crashes have been reported so far.
- GM estimates about 1% of the affected trucks may develop this problem.
Who Is Affected
- Owners of Chevrolet Silverado Medium Duty trucks built from May 2018 to September 2024.
- Trucks built after September 2024 with a newly designed silicone-sealed harness are not included in this recall.
What GM Will Do
GM will offer a free repair, which involves replacing the faulty brake pressure switch wiring harness with an updated, sealed version designed to prevent fluid leaks.
- Notification letters will start going out on July 28, 2025, with instructions on how to schedule the repair.
- The recall is officially listed under NHTSA Campaign No. 25V390 and GM’s internal reference N242482680.
Safety Recommendations
Until repairs are completed, GM strongly advises owners to:
- Park the vehicle outdoors, away from garages, homes, and other structures.
- Watch for dashboard warnings such as the “service brake system” light and be alert to any unusual smells from the engine compartment.
What You Should Do Now
- Check if your vehicle is affected using your VIN via the NHTSA recall lookup or on VinCheckPro’s dedicated recall page.
- Follow GM’s parking and safety recommendations to reduce fire risks.
- Schedule a free repair as soon as you receive your official recall notice.
Call to Action
Don’t wait to protect your vehicle and property.
Run a GM recall check today to verify your VIN and find a nearby dealership offering the free fix.
Frequently Asked Questions
What exactly is the problem with the brake pressure sensor?
The brake pressure sensor’s diaphragm can degrade and allow brake fluid to leak into the sensor’s wiring, potentially causing an electrical short that could start a fire.
Can a fire really start even if my truck is parked and turned off?
Yes. The electrical short can occur when the truck is parked and not running, making this issue especially dangerous.
How do I know if my truck is affected?
You can check using your VIN number on the NHTSA website or on VinCheckPro’s GM Recalls page.
What should I do if I suspect a problem before receiving my recall notice?
Follow GM’s safety advice immediately: park your truck outdoors, away from structures, and contact your local GM dealer to discuss your options.
Will I have to pay for this repair?
No. GM will perform this repair free of charge as part of the safety recall.
How long does the repair take?
Once parts are available, the repair is expected to be straightforward and typically completed within a day at a GM-authorized service center.
What if I already had a similar recall repair in the past?
Even if your truck was previously repaired, it may still need this updated fix. Check your VIN to confirm.
By acting now, you’ll help protect your truck, yourself, and your property from serious risks. For complete details and to check your vehicle, visit https://www.vincheckpro.com/recalls-check-by-vin/gmc-recall/
