One problem related to steering rack and pinion has been reported for the 2015 GMC Acadia. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2015 GMC Acadia based on all problems reported for the 2015 Acadia.
My car whined and groaned when you turn the wheel so I took it in and had the power steering pump replaced and now my wheel. Wont turn at all . Upon reading many complaints with this vehicle found it may be the rack and pinion I am. Going to have to tow to a different mechanic to see if the new problem is covered under warranty.