Optima V6-2.7L (2003)
5. Debur the holes on both sides in several areas around the edges of the 40 mm hole so that an accurate judgment of the subframe material thickness can
be made.
WARNING
6. Insert the 1.5 mm side (smallest width) of the thickness gauge. Attempt to slide the thickness gauge over the edge of the hole in several different
locations on both left/right rear inspection sites.
NOTICE
a) If the thickness gauge (B) is able to pass over the subframe material, it has failed the 1.5 mm minimum thickness test. Replace the subframe
according to TSB GEN 026.
b) If the gauge will not pass over the subframe material, the corrosion preventive treatment can be performed. Proceed to the next step.
