Optima L4-2.4L (2001)
1. Raise the vehicle on a hoist in preparation for the underbody inspection of the subframe.
2. Inspect the entire subframe assembly for any external signs of severe corrosion/perforation. a) If any perforation or open cavity is found in the
subframe, do not continue repairing. Replace the subframe according to TSB GEN 026. If no signs of perforation or severe corrosion are found continue
to step (b).
b) Using a hammer, lightly tap the entire subframe in several areas to check for any material which may be nearing the perforation stage. If the
hammer opens up a cavity in the subframe, replace the subframe according to TSB GEN 026.
NOTICE
SERVICE PROCEDURE:
1. In preparation for the drilling of the 40 mm hole-saw cuts for the front / rear subframe sites, the following identification procedure must be utilized to
ensure the proper drilling location. The 40 mm hole-saw site locations will be numbered as follows: (1-4) / (Large Blue Holes).
