The official notice
Defect
On certain vehicles, the adjustable rear toe link may not have been properly tightened during a previous service repair. As a result, the toe link could loosen and eventually separate. This could cause a sudden loss of vehicle stability. Note: You may notice the following warning symptoms if a rear toe link is loose: - sway or wander while driving; - loud metallic or other unusual noise from the rear suspension; - the steering wheel may be off-center; - the Stabilitrak malfunction indicator lamp (MIL) may stay on or flash while driving; - Uneven wear between the rear tires. If you detect these symptoms, you should stop driving and have the vehicle towed to the nearest dealership.
Safety Risk
A loss of stability could increase the risk of a crash.
Remedy
General Motors will notify owners by mail and instruct you to take your vehicle to a dealer to replace the adjustable rear toe links with a newly designed part.