Heating Exhaust problems.

I have owned a GMC envoy for about a year now and have been bothered by a reocuring problem. During the colder seasons I turn on the heater. Soon I become sick, since the heat system actualy draws air into the car, from the exhaust.
I am not the only person who experiences this problem, my best friend has the same model and the same issues. However the dealership says there is no such problem, probably to avoid a law suit. He told me to cruize the internet and see if anybody is having the same issues. So now I ask anybody who is reading this thread, and having the same problems, to either post saying that they also have this issue, or to at least go to there dealership and complain.
Personal health should not have to be worried about in this case. A choice between having poisoned air or hypothermia due to the cold is a choice that should definatly be resolved. ASAP.

~Molocath

I have owned a GMC envoy for about a year now and have been bothered by a reocuring problem. During the colder seasons I turn on the heater. Soon I become sick, since the heat system actualy draws air into the car, from the exhaust.
I am not the only person who experiences this problem, my best friend has the same model and the same issues. However the dealership says there is no such problem, probably to avoid a law suit. He told me to cruize the internet and see if anybody is having the same issues. So now I ask anybody who is reading this thread, and having the same problems, to either post saying that they also have this issue, or to at least go to there dealership and complain.
Personal health should not have to be worried about in this case. A choice between having poisoned air or hypothermia due to the cold is a choice that should definatly be resolved. ASAP.

~Molocath
The heater does not draw air from the exhaust.
There is a fresh air duct on the right side of the truck under the wiper.

When you warm up your truck do you do it in an enclosed garage?