Jounce
1. Lift the front bumper for "Z" height and the rear bumper for "D", height of the vehicle up about 38 mm (1.5 inches).
2. Gently remove your hands and let the vehicle settle on its own.
3. Repeat the jounce operation two more times for a total of three times.
4. Measure the "D", or "Z", height.
5. Push the front or rear bumper of the vehicle down about 38 mm (1.5 inches).
6. Gently remove your hands and let the vehicle rise on its own.
7. Repeat the jounce operation two more times for a total of three times.
8. Measure the "D", or "Z", height.
9. Find the average of the high and low measurements. This is the true "D", or "Z", height.
NOTE: True trim height is the average of the high and low measurements.