One problem related to lose power steering has been reported for the 2015 GMC Sierra 1500. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2015 GMC Sierra 1500 based on all problems reported for the 2015 Sierra 1500.
While driving down the streets, truck loses all electrical power, loses power steering,radio, gauge cluster power and engine dies. Happened several times today. It immediately all comes back on(so far) but could definitely be a safety concern if the conditions were right.