This bulletin applies to 2017-2018 Toyota Highlander and Sienna, 2018 Camry and 2016-1028 Tacoma models. Some vehicles equipped with a 2GR-FKS 3.5L engine may exhibit an engine oil leak from the cam sensor bolt holes. The flange bolts and the camshaft housings have been changed to address the issue.
This bulletin applies to 2016-2019 Chevy Camaro vehicles equipped with a 2.0L or 2.5L engine. An engine oil leak may be found from the side of the engine block, near the starter. The condition may be caused by porosity in the cast engine block at a bed plate bolt hole location.