Ions are GM
every GM I have owned or driven for a company vehicle has had Major failures from engines diffs , trannys , even brakes do not last on GMs , I had an Astro van , you could just get 20,000 miles on the front brakes consistantly , I later had a 94 B100 Dodge , the brakes started squealing at 80,000 , I figured it was about time , bought new pads & the originals were just glazed & were only worn maybe 60 %