Power Steering Fluid problems of the 2013 Buick Verano

Steering)- the steering wheel seems to "stick" at speeds from 40 mph and upwards to 80 mph. Steering seems to have fluid, non-catching motion while driving short distances, however, after driving long distances, or more often than usual throughout the day, the wheel seems to stick, and takes more effort than usual to steer in the intended direction. Vehicle stays straight for awhile, but veers off like normal, but to steer vehicle to remain in lane is when the sticking occurs mostly. Issue may intertwine with next incident involving the front right axle seal. Other)- 5/19/2014, mileage 25727 - took vehicle to a dealership who stated that the front passenger axle seal is leaking and recommended taking to nearest gm dealership for warranty repair. Gm dealership stated that the axle seal wasn't leaking, but was just "wet. " returned to first dealership a few months later who stated the same axle seal leaking issue, gm dealership stated the axle seal was wet. I fear that the failure to acknowledge, and repair, the leaking axle seal could be a result of the steering wheel sticking. Failure to repair could also lead to part malfunction/failure which could lead to vehicle crashing. Engine) - engine seems to always run loud, like the fan is on high for climate control, even when climate control is off. Gm dealership stated it was a fan to cool the engine down, and runs when car is driven for a long period of time. I hear it all the time, and the vehicle seems to be hotter than what would be expected to be coming from that area. Uncomfortable heat is how I would describe it. Engine always runs loud currently at 48,000 miles, regardless of driving period. Fire danger could be a risk.