A software failure in the parking brake system has resulted in incomplete disengagement of the parking brake pads from the rotors, causing excessive brake wear and heat leading to a potential fire hazard. Increased heat in the brakes limits the ability to stop effectively, and accelerating under braking can cause damage to the transmission. Dealers will reprogram the braking module with new software to remedy the problem.
These vehicles have power steering units which may fail while driving. Loss of power steering is most noticeable while driving slowly or parking, resulting in a heavier feel at the steering wheel. Slow speed maneuvers can become difficult and potentially unsafe. Dealers will replace the affected components free of charge. This recall is an expansion of an earlier GM recall (14V-153) to cover additional vehicles.
The ignition switch actuator can bind causing the ignition switch to stick in the "start" position. If this were to occur the actuator can unexpectedly release, cause the ignition switch to snap back into the "Accessory" position. This would cause the engine to turn off with an associated loss of brake and steering power assist. If these conditions were to lead to a crash the airbags may not deploy as expected. Dealers will inspect and replace the ignition lock housing as necessary to correct this concern.
Certain trucks are being recalled because the rear axle shaft may not have been properly heat treated prior to vehicle assembly and could fail while driving. If this were to occur a rear wheel could separate from the vehicle, increasing the risk of a crash. Dealers will inspect and replace the affected axles to correct this concern.
These vehicles are being recalled because the headlamp driver module (HDM) can overheat and fail. This will cause the headlights and daytime running lights to stop working. Loss of this lighting will affect the ability of the driver to see the road and reduce the vehicle's visibility to oncoming vehicles, both of which increase the risk of a vehicle crash. The remedy for this problem is still under development and not yet available.
A fault can develop with the Electric Power Steering resulting in sudden loss of power steering assist, increasing the risk of a crash. Dealers will replace the power steering assist motor kit to correct this concern.
Certain vehicles equipped to run on compressed natural gas are being recalled because the high pressure natural gas regulator could develop a leak, increasing the risk of a fire or explosion. Dealers will replace the natural gas regulator to correct this concern.
The driver's and/or passenger's seat may suddenly drop to its lowest position because a bolt securing the height adjuster can fall out. This unexpected movement of the driver's seat could cause a distraction, increasing the risk of a crash. Dealers will replace the height adjuster bolts in both front seats to correct this concern.
Excess weight on the key ring can cause the ignition switch to move out of the run position without warning, turning off the engine. This defect can also affect the safe operation of the airbag system. Until this recall is performed, customers should remove all items from their key rings, leaving only the ignition key. The key fob (if applicable), should also be removed from the key ring. Dealers will provide two replacement key rings and key cover on all ignition keys to correct this concern.
In cold temperatures, the insulation on the engine block heater cord can become damaged, allowing the wires to be exposed. Exposed wires increase the risk of electrical shock and personal injury if the cord is handled while it is plugged in. Dealers will replace the block heater cord to correct this concern. The new cord is rated for temperatures of -40C.