Engine Exhaust System problems of the 2012 Chevrolet Equinox

I have been having an issue with fumes coming into the cab of my vehicle through the front vents when set to defroster or circulating air from outside to inside through the vents. The fumes smell of gas or exhaust and are very noticeable when sitting still while engine is running. This is noticeable mainly when sitting still in vehicle with engine running. The smell is overwhelming. I have developed breathing problems since purchasing my vehicle. I have been newly diagnosed with asthma and am having to take breathing treatments. I had the first asthma attack in December 2019. I am also having problem with airbag light staying on. Wheel information is also incorrect. Information system may indicate the front passenger wheel pressure is low, when in fact the rear passenger tire pressure is low.

Done a oil change and about 3 weeks later no oil. Had to change the camshaft sensor and now throwing the code 420. Runs sluggish and exhaust is now blowing through the vents.

Exhaust cam shaft solenoid valve replaced 3 times within 1 year. Cam shaft intake accuator replaced 1 time. Engine check light came on while traveling on freeway. Error code p0014/p0013 confirmed by dealership at time of repairs. Recently had front windshield wiper transmission failed. Also while traveling via freeway during a heavy rain storm this car has 58000 miles at this time and very well maintained.

Tl- the contact owns a 2012 Chevrolet Equinox. The contact stated that while driving at various speeds the vehicle would suddenly shut off. The failure had occurred on 6 separate occasions before the vehicle was towed to the local dealer andrew Chevrolet(1500 west silver spring dr, glendale WI. ) who diagnosed that the intake and exhaust cylinoid valve was faulty and needed to be replaced. The vehicle was repaired. The manufacturer was not notified. The failure mileage was 39,000. Jft.