In 2009, GM recalled approximately 8,000 Pontiac G6 because the brake lights may not come on when the pedal is pressed, or the lights illuminate for no reason.
NHTSA is currently investigating complaints from 2005-2009 Pontiac G6, 2004-2011 Chevrolet Malibu and 2007-2009 Saturn Aura owners about the same problems.   NHTSA states that if the brake lights don’t illuminate, drivers behind the cars won’t be warned and that could lead to a crash.  In addition owers are complaining that the G6’s cruise control may not engage or will disengage unintentionally.  GM says that it has received no reports of crashes or injuries and is cooperating with the NHTSA investigation. 
GM says that owners who suspect brake light or cruise control problems should take their cars to any Chevrolet, Buick, Cadillac or GMC dealer. GM closed down the Pontiac and Saturn brands in 2010 as part of its massive restructuring.