Rattle/Knock Type Noise Coming From Engine Compartment or Underneath Vehicle (Check for Missing Rear Oil Pan Bolts and Perform Necessry Repair)

Some customers may comment about a loud rattle/knock type noise coming from the engine compartment or from underneath the vehicle. Upon inspection, you may find that the noise is coming from the rear of the engine in the transmission bell housing/flexplate area.

The bolt(s) that attach the rear of the oil pan to the engine block may have come out and fallen down into the transmission bell housing.

Replace the bolt that came out with a new bolt, P/N 11570082. Prior to installing the new bolts, apply thread locker, P/N 12345382 (in Canada, P/N 10953489), to the threads. Install the bolt and tighten to 25 N·m (18 lb ft). Then remove the left rear oil pan bolt, clean the threads, apply thread locker, install and tighten to 25 N·m (18 lb ft). Verify that the other (vertical) oil pan bolts are also tightened to the same specification and that the side (horizontal) oil pan bolts are tightened to 50 N·m (37 lb ft).

Notice: Inspect the flexplate (flywheel) and other components for damage caused by the movement of the bolt.

Use appropriate labor operation number based on repair performed.