General Motors (GM) is recalling 62,468 vehicles due to a fault in the brake pressure sensor assembly that could cause fluid to leak, increasing the risk of a fire, the National Highway Traffic Safety Administration (NHTSA) announced on Thursday.
A fault in the brake pressure sensor assembly can cause brake fluid to leak beyond the seal into the pressure switch. The fluid could seep into the electrical components, increasing the risk of an electrical short.
The electrical short can generate an excessive amount of heat, leading to an underhood fire. Unfortunately, a fire may occur even when the vehicle is not in use. Currently, GM is unaware of any accidents or injuries related to the recall.
The recall number is 25V390, and it covers certain 2019–2024 Chevrolet Silverado Medium Duty 4500HD, 5500HD and 6500HD pickups. GM estimates that only 1%, or 625, of the recalled vehicles, are impacted by this defect.
The issue may present itself to consumers by the “service brake system” malfunction indicator lamp.
Until a permanent resolution is reached, GM advises customers to park their vehicles outdoors. In the meantime, dealers will replace the brake pressure switch wire harness free of charge. The replacement components will contain a silicone sealant that prevents the brake fluid from seeping into the harness.
The supplier of the brake assembly used an unauthorized chemical during the manufacturing process of the rubber diaphragm. The component reacted negatively with the fluid, causing the seal to deteriorate over time and resulting in leakage.
The automaker will begin to notify customers of the safety concerns on July 28. An additional follow-up letter will be sent once a permanent remedy is available.
