Incorrect software in the transmission control module may result in reduced power, unintended deceleration, rear-wheel lockup, or cause the vehicle to move in an unintended direction, the regulator said. GM on Wednesday recalled more than 461,000 vehicles over a separate issue related to its transmission.

A transmission issue in some diesel engine vehicles can cause harsh shifting and rear-wheels to lock, according to documents filed with regulators.

The automotive world is no stranger to recalls, but every now and then, one comes along that makes you raise an eyebrow. This time, it’s General Motors facing the music with a recall affecting over 500,