Sunita Somvanshi
General Motors has issued a major recall for over 62,000 Chevrolet Silverado Medium Duty trucks due to a serious fire risk. The recall affects certain 2019-2024 Chevrolet Silverado Medium Duty 4500HD, 5500HD, and 6500HD models. Owners are being urged to take immediate precautions until repairs can be completed.
The issue stems from a faulty brake pressure sensor assembly that can leak fluid, creating a significant electrical short and fire hazard. Brake fluid can leak past the diaphragm seal and into the brake pressure switch, potentially causing a short circuit in the switch and its corresponding fuse. This electrical problem can generate enough heat to start a fire under the hood.
What makes this recall particularly concerning is that an underhood fire may occur even when the vehicle is turned off and unattended. GM strongly advises owners to park their trucks outdoors and away from structures until the recall repairs are completed.
The root cause has been traced to Kodiak Controls of Romeoville, Illinois, the supplier of the brake pressure sensor assembly. The defect was caused by the use of an unauthorized chemical that breaks down the diaphragm seal rubber. This chemical reacts with brake fluid, causing the rubber diaphragm in the assembly to break down and allowing fluid to leak where it shouldn’t.
The issue may present itself to consumers by the “service brake system” malfunction indicator lamp lighting up on the dashboard. If you see this warning in your Silverado, it could indicate that brake fluid has already contaminated the wiring harness.
Similar Posts
This issue is separate from, but related to, a 2023 recall (23V-266) that addressed a problem with zinc sealant in brake pressure sensors. Unfortunately, vehicles that were previously repaired under that recall will still need this new repair.
While the recall affects a large number of trucks, GM estimates that only 1%, or about 625 of the recalled vehicles, are actually impacted by this defect. GM confirmed 160 related reports, with one fire reported so far. The company is not aware of any accidents or injuries related to this condition.
What should owners do? Dealers will replace the brake pressure switch wire harness free of charge. GM plans to mail interim notification letters to owners starting July 28, 2025, with a second notice to follow once sufficient parts are available to complete the repairs.
If you want to check if your vehicle is affected, you can contact GM customer service at 1-866-467-9700 regarding recall number N242482680. You can also contact the National Highway Traffic Safety Administration (NHTSA) at 1-888-327-4236 and reference recall number 25V390, or visit their website at www.nhtsa.gov.
Remember: Until your truck is repaired, park it outdoors and away from buildings to reduce the risk of property damage should a fire occur.
