"A loss of power-steering assist may increase the risk of a crash," said NHTSA in its recall summary.
GM issued a stop-delivery order on the 2016 Regal on February 19.
There are no accidents or injuries linked to the recall, GM spokesman Tom Wilkinson told Edmunds on Sunday.
The affected vehicles were built from August 30, 2015 to February 12, 2016.
GM told federal safety regulators it is working with the supplier to obtain the required parts as quickly as possible.
Edmunds says: Owners will have to wait for their official recall notice and then schedule a service appointment with their dealer. But if you have an immediate concern, it's best to contact your dealer now.