For 1990-2009 cars only
- Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle .
- Inspect the underbody for obvious floor pan deterioration.
- Inspect for loose dirt and rust around the inside of the floor pan reinforcement member access holes.
- Make any repairs before the final cleaning and performing protective treatments.
Loose dirt and rust inside of the floor pan reinforcement member access holes is the first indication of possible corrosion in hidden areas.
