The Lyriq is the first Cadillac to use the Ultium electric vehicle platform developed by its General Motors parent company. It’s a crossover that straddles the compact and mid-size categories, and was designed to appeal to the brand’s core demographic of shoppers looking for an upscale car with utility-vehicle practicality.
Issue:
On a small number of vehicles, the bolts securing the left or right front stabilizer bar brackets may not have been tightened properly and could become loose. If this happens, the stabilizer bar and/or bracket could separate and damage the high-voltage cables and/or battery coolant lines. This could cause a loss of power to the wheels.
Safety Risk:
A loss of power to the wheels could 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 inspect and, if necessary, tighten the stabilizer bar bracket bolts. If the stabilizer bar, bracket, high-voltage cables, or coolant lines are damaged, they will be repaired.
Issue:
Under certain conditions, a software problem could cause the antilock braking system (ABS) not to work properly. As a result, the ABS could cause reduced braking or a loss of brakes.
Safety Risk:
Reduced braking or a loss of brakes can increase the risk of a crash.
Corrective Actions:
General Motors will notify owners by mail and send a wireless over-the-air software update to eligible vehicles to update the electronic brake control module software. Alternatively, you may schedule an appointment to have the update performed at a GM dealership.
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 a small number of vehicles, the rear seat belt bracket may not have been properly welded to the seat frame. As a result, the seat belts for the rear left and centre seats could detach.
Safety Risk:
A seat belt that detaches in a crash could create an increased risk of injury.
Corrective Actions:
General Motors will notify owners by mail and advise you to take your vehicle to a dealership to replace the rear seat cushion frame. General Motors recommends not to use the rear left and centre seats until the recall repairs are completed.
Issue:
On one vehicle, connections within the high-voltage battery pack may be out of position or may not have been properly welded. As a result, the vehicle may enter a reduced power mode or this could cause a loss of power to the wheels.
Note: This problem could cause a battery warning light and "Service High Voltage System" message to display in the instrument panel. A "Charging Disabled" or "Vehicle Will Not Restart" message may also display.
Safety Risk:
A loss of power to the wheels could increase the risk of a crash.
Corrective Actions:
General Motors will notify the owner by mail and advise them to take their vehicle to a dealership to replace the high-voltage battery pack.
Issue:
On a small number of vehicles, a software problem could cause the pedestrian warning sounds not to work when the vehicle slows from 30 to 25 km/h. As a result, the vehicle may not produce enough sound to be detected by a pedestrian or cyclist. Electric vehicles are required to make a minimum sound level when operating at low speeds.
Safety Risk:
Pedestrian warning sounds that don't work could create an increased risk of injury for pedestrians and cyclists.
Corrective Actions:
General Motors will notify owners by mail and advise you to take your vehicle to a dealership to reprogram the body control module.
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