GM has issued a service update for certain 2024 GMC Sierra 1500 pickups that need to have an issue with the Brake System Control Module (BSCM) fixed, with several remedies currently available to vehicle owners.
According to Service Update N232428991 affected GMC Sierra brake system control modules will fail to set a diagnostic trouble code (DTC) or light up the Check Engine light when certain problems occur.
The incorrectly programmed brake system control modules will cause affected 2024 GMC Sierra trucks to fail to set a DTC or activate the Check Engine light if faults occur with the vehicle’s emissions control system. However, the brake system control will still display warnings for malfunctions of the stability control and traction control.
A fix is available for this issue in the form of reprogramming the BSCM of affected 2024 GMC Sierra units. This remedy can be applied directly by GM dealership service technicians, or as a specific over-the-air (OTA) update. In both cases the repair is available free of charge through February 29th, 2040.
As a reminder, the 2024 GMC Sierra 1500 is powered by one of four available engines. Three of these powerplants are gasoline engines, including the turbocharged 2.7L I4 L3B gasoline TurboMax engine developing 310 horsepower and 430 pound-feet of torque, the naturally aspirated 5.3L V8 L84 gasoline engine cranking out 355 horsepower and 383 pound-feet of torque, and the naturally aspirated 6.2L V8 L87 gasoline engine providing 420 horsepower and 460 pound-feet of torque.
The model’s single diesel powerplant choice is the 3.0L I6 LZ0 turbodiesel Duramax engine rated at 305 horsepower and 495 pound-feet of torque. Depending on the engine under the hood, power may be sent to the wheels by either the GM eight-speed automatic transmission or the GM 10-speed automatic transmission.
The 2024 Sierra 1500 rides on the light-duty variant of the GM T1 platform under the body panels. The truck was produced at two different factories, including the GM Fort Wayne plant in Indiana and GM Silao plant in Mexico.
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