The National Highway Traffic Safety Administration (NHTSA) have increased their investigation of twenty-one General Motors pickup truck and SUV models, that have experienced engine compartment fires that can erupt even when the ignition is turned off. The investigation is checking only the model years 2006 to 2008, which affects 2,700,000 vehicles. Forty-one non crash engine compartment fires have been reported from the incidents, eight of which caused property damage. "GM provided ODI with 41 allegations of non-crash engine compartment fires including 16 allegations of fires origination with the ignition in the off position," stated the NHTSA. The organization is examining the vehicles electrical system, engine compartment, cooling system, battery cables, fuses, circuit breakers and more. No official recall has been made from General Motors yet.

The GM vehicles under investigation are:

• Cadillac Escalade ESV and EXT from the 2007 and 2008 model years
• Chevrolet Avalanche 1500 from the 2007 and 2008 model years
• 2007 Chevrolet Avalanche 2500
• 2007 Chevrolet Silverado
• Chevrolet Silverado 1500, 2500 and 3500 from the 2007 and 2008 model years
• Chevrolet Surburban 1500 and 2500 from the 2007 and 2008 model years
• Chevrolet Tahoe from the 2007 and 2008 models year
• 2008 GMC Sierra
• GMC Sierra 1500, 2500 and 3500 from the 2007 and 2008 model years
• 2007 GMC Sierra Classic
• 2007 GMC Silverado, GMC Yukon from the 2007 and 2008 model years
• GMC Yukon XL 1500, XL 2500 from the 2007 and 2008 model years
• Hummer H2 from the 2006 to 2007 model years
• 2008 Hummer H2 Utility
• Hummer H2 from the 2006 to 2008 model years.

Source: ConsumerAffairs.com