Vehicles Affected: About 84,000 GM trucks from the 2011-12 model year, including certain Chevrolet Silverado and Avalanche pickup trucks and Tahoe and Suburban SUVs; GMC Sierra pickup trucks and Yukon and Yukon XL SUVs; and Cadillac Escalade and Escalade ESV SUVs and Escalade EXT pickup trucks. Certain 2007-14 models from that group with previous repairs may also need this recall because of defective replacement parts.
The Problem: If the cabin is warm, a faulty ignition lock actuator could cause the key to stick in the Start position when you turn the car on. (That's past the Off, Accessory and Run positions.) If you drive with the key stuck in Start and the cabin temperature falls or you hit a bump, the key could release from the Start position and rotate all the way past Run into the Accessory position. That would turn off the car, disabling important systems like power steering and airbags.
The Fix: The actuator is too large, spokesman Alan Adler told us, and a warm cabin may cause the piece to expand even more. GM dealers (Buick, Cadillac, Chevrolet or GMC) will inspect and replace the ignition lock housing if needed, according to The Detroit News. Adler told us GM expects fewer than 500 cars to need the repairs.
What Owners Should Do: Owners can call GM at 800-458-8006 for more info.
Need to Find a Dealer for Service? Go to Cars.com Service & Repair to find your local dealer.