General Motors is recalling nearly 55,000 vehicles because they may roll away unexpectedly.
The recall affects certain 2013 models of the Chevrolet Silverado, Suburban, Tahoe, Avalanche and Express. Also included are the GMC Sierra, Savana and Yukon, as well as the Cadillac Escalade.
The company says the vehicles may have been built with faulty park lock cables or malformed steering column lock gears. They may shift out of park even if the ignition key is in the off position or removed completely.
GM says about one in 1,000 vehicles have had the problem, but most have not been sold yet.
The company says it has not heard of any crashes or injuries caused by the problem.
Dealers will replace the steering column free of charge if necessary.