I have a 2006 G6 GT 2DR 3500v6
-- I have the classic clunking noise when turning
-- left/right indicator column replaced, as once I turn it would not reset..
-- steering column replaced 3 times
-- on the 2 door models, the window drops half inch or so when you open the door, and the window on the driver side no longer goes all the way up, so all you hear is the wind whistling in your ear
-- radiator replaced
-- fuse box located in the trunk replaced due to fuses melting
-- driver seat replaced due to rusted bolts
-- light on the fog lamp button no longer works
-- when pushing the accelerator, sometimes the car hesitates or the computer doesn't get that the pedal is pressed down so there is a 2 second delay.. VERY AGGITATING
-- battery died and got replaced
Car now has 75385km on it, rougly about 55000 miles. This car has been HELL for me. Mind you I've had different cars from Pontiac in the past and have had way worse problems than this. Currently purchased a G8 GT and love it.. "SO FAR" but we'll see what happens..