On vehicles with Pedestrian Protection, the fenders cannot be used to support the powertrain during service. Also, the strut towers are not accessible to mount the engine support fixture on many models. Using GM-43405-1 (right side) and GM-43405-2 (left side) on the inner structure allows existing components from GM-28467-B or GM-51007 engine support fixtures to be used to support the powertrain. Unapproved methods may damage the fenders, or may not safely support the powertrain. Refer to published service information for specific vehicle applications.