Cadillac CT5

Issue: 
Over time, the transmission control valve could wear and lose pressure. If this happens, the transmission could shift harshly and could cause the wheels to lock up. 
Note: This recall only affects vehicles equipped with a 10-speed automatic transmission. 

Safety Risk: 
Wheels that lock suddenly could cause a loss of control and increase the risk of a crash. 

Corrective Actions: 
General Motors will notify owners by mail and advise you to take your vehicle to a dealership to update the transmission control module software to detect excess wear in advance of a wheel lock up. If detected, a service engine light would turn on, a message would display in the instrument panel and the vehicle would be limited to fifth gear.

Issue: 
On certain vehicles, a software problem could cause the lower beam headlamps not to turn on as it becomes dark outside if the multi-function switch is in the "OFF" or "PARKING LAMP" position. This could also cause the daytime running lamps (DRLs) to turn off when the vehicle is moving. As a result, the vehicles may not meet certain requirements of Canadian regulations. 

Safety Risk: 
Headlamps and/or DRLs that don't turn on could reduce visibility, make the vehicle less visible to others and increase the risk of a crash. 

Corrective Actions: 
General Motors will notify owners by mail and advise you to take your vehicle to a dealership to update the body control module (BCM)software.

Issue: 
On certain vehicles, the daytime running lamps (DRLs) may stay on when the headlamps are on. Canadian regulations require the DRLs to turn off when the headlamps are on. 

Safety Risk: 
Daytime running lamps that stay on could cause glare for oncoming drivers and increase the risk of a crash. 

Corrective Action: 
General Motors will notify owners by mail and instruct you to take your vehicle to a dealership to update the body control module (BCM) software.

Issue: 
On certain vehicles, the roof-rail airbags may not have been installed correctly. As a result, the airbags may not inflate properly in a crash. 

Safety Risk: 
A roof-rail airbag that does not inflate properly could create an increased risk of injury in a crash. 

Corrective Actions: 
General Motors will notify owners by mail and instruct you to take your vehicle to a dealer to inspect the roof-rail airbags. If necessary, they will be reinstalled correctly.

Issue: 
On certain vehicles, a software problem could cause the airbag warning light not to turn on when there is a fault in the airbag system. As a result, a driver might not be alerted of the problem and the airbags may not work properly in a crash. 

Safety Risk: 
An airbag system that does not work properly could create an increased risk of injury in a crash. 

Corrective Actions: 
General Motors will notify owners by mail and send a wireless over-the-air software update to each vehicle. Alternatively, you may schedule an appointment to have the update performed by a dealer.