GM Vehicle Recall Total Hits 29 Million Units

General Motors Co. is launching six new global recalls covering 8.4 million vehicles produced between 1997 and 2014 most of them to remedy ignition switches that can be jolted out of the "run" position.

The new batch of campaigns pushes GM's recall total to a record 29 million vehicles since January. Of that total, nearly 17.2 million units will get a new ignition switch or modified ignition key.

The largest of the new recalls will fix "unintended ignition key rotation" in 7.6 million 1997-2008 midsize sedans:

• 1997-2005 Chevrolet Malibu
• 1998-2002 Oldsmobile Intrigue
• 1999-2004 Oldsmobile Alero
• 1999-2005 Pontiac Grand Am
• 2000-2005 Chevrolet Impala and Monte Carlo
• 2004-2008 Pontiac Grand Prix

A third recall will repair a possible short circuit in module in the driver's door that controls the power windows and door locks. The campaign covers 188,700 of GM-produced 2005-2007 Buick Rainier, Chevy TrailBlazer, GMC Envoy, Isuzu Ascender and Saab 9-7x crossovers.

A fourth campaign will replace engine block heater cords in about 20,100 recent-model Buick Encore crossover and Verano small sedans and Chevy Cruze sedans, Sonic minicars and Trax mini-crossovers. Most of those models are outside the U.S.

A fifth callback will fix an underhood electrical problem that could cause a fire in 12,000 of the company's 2007-2011 heavy-duty Chevrolet Silverado and GMS Sierra fullsize pickup trucks.

Finally, GM will tighten a loose fastener in 100 of its 2014-model Buick Regal sedans, Cadillac XTS large sedans and Chevy Camaro sports coupes and Impala midsize sedans.