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.

General Motors is recalling nearly 462,000 pickup trucks and SUVs with diesel engines because the rear wheels can lock up, increasing the risk of a crash.