General Motors has announced the recall of certain 2012 Cadillac CTS models, built between October 21, 2011 and October 26, 2011. During assembly, the power vacuum brake pushrod retention nut may not have been torqued to the proper specification.

As a result, the nut can work loose, allowing the pushrod to disengage from the brake pedal, resulting in a loss of braking ability.

Some 674 Cadillac CTS models are affected by this recall, which began on November 1. Since the problem was spotted by GM’s engineers on October 28, and since a stop sale was issued on October 29, it’s unlikely that many affected cars are in customer hands.

Cadillac dealers will notify customers via first class mail, and will inspect and repair the CTS models as needed. Owners with questions or concerns can reach Cadillac’s customer service at (800) 458-8006, or may contact the National Highway Traffic Safety Administration’s Vehicle Safety Hotline at (888) 327-4236 for the latest information on this recall campaign.