General Motors has decided that a defect which relates to motor vehicle safety exists in certain 2011-2012 model year vehicles, including Escalade, Escalade ESV, Escalade EXT, Avalanche, Silverado, Suburban, Tahoe, Sierra, Yukon and Yukon XL.
Affected vehicles may have ignition lock actuators with an outer diameter that exceeds specifications, the recall bulletin states. This may make turning the ignition key difficult, and the ignition key could get stuck in the “start” position if the vehicle’s interior ambient temperature is sufficiently high. If the vehicle is driven with the key stuck in the “start” position and the vehicle’s interior temperature cools or the vehicle experiences a significant jarring event, the ignition lock cylinder could move out of the “start” position, rotate past the “run” position and move into the “accessory” position.
GM warns that if the key moves into the “accessory” position, engine power, power steering and power braking will be affected, increasing the risk of a crash. In the event of a crash, the timing of the key movement into the “accessory” position relative to the activation of the sensing algorithm of the crash event may result in the airbags not deploying, increasing the potential for occupant injury.
To remedy this condition, dealers will need to inspect the steering column for identifying information and, if necessary, replace the ignition lock housing.
Please contact your ARI or manufacturer representative if you have any questions or concerns.