US probes GM headlight failures, may add vehicles to recall

Detroit - The US government is investigating whether General Motors should add about 312 000 vehicles to a 2015 recall for headlights that can suddenly go dark.

The National Highway Traffic Safety Administration says 128 owners have complained that low-beam lights can fail.

Dating back to 2005

The investigation covers the 2005 and 2009 Buick Lacrosse; the 2006 and 2007 Chevrolet Trailblazer, GMC Envoy and Buick Rainier; the 2006-2008 Isuzu Ascender and Saab 9-7X; and the 2007 Pontiac Grand Prix.

At the time of the recall GM said the headlamp module in the engine compartment could overheat and stop working properly.

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The agency says complaints came from owners of vehicles that weren't covered by the recall but are within the model years it affected.

The 2015 recall and a related one from 2014 covered about 497 000 vehicles.