Incorrect trim heights can cause bottoming out over bumps. Incorrect trim heights can cause possible damage to the suspension components and symptoms similar to those produced when there is a problem with the wheel alignment. Check the trim heights when diagnosing suspension complaints and before checking the wheel alignment.

Perform the following before measuring the trim heights:

1. Set the tire pressures to the pressure shown on the tire placard. The tire placard is located on the driver's door.
2. Fill the fuel tank.
3. Place the front seats in the full back position.
4. Make sure the rear compartment is empty.
5. Make sure the vehicle is on a level surface, such as an alignment rack.
6. Close the doors.
7. Close the hood.
8. Close the rear compartment lid.

J and K dimensions are measured vertical to the ground. These trim heights should be within 6.4 mm (0.25 in) to be considered correct.

Important: The Real Time Damping system must be operative while taking measurements.

1. Lift the front bumper of the vehicle up approximately 38 mm (1.5 in). Gently remove hands. Let the vehicle settle.
2. Repeat this step two more times.
3. Push the front bumper down approximately 38 mm (1.5 in). Gently remove hands. Let the vehicle settle.
4. Repeat this step two more times.
5. Measure 88.9 cm (35 in) from the center of the front wheel to the lower edge of the rocker panel.
6. Mark the spot.
7. Measure the J dimension (from the lower edge of the rocker panel to the ground). Refer to Trim Height Specifications in Suspension General Diagnosis.
8. If the J dimension is not within specification adjust the Z height.
9. To adjust the front spring to correct the Z height. Refer to Trim Height Specifications in Suspension General Diagnosis.

Important: The Real Time Damping system must be operative while taking measurements.

1. Lift the rear bumper of the vehicle up approximately 38 mm (1.5 in). Gently remove hands. Let the vehicle settle.
2. Repeat this step two more times.
3. Push the rear bumper down approximately 38 mm (1.5 in). Gently remove hands. Let the vehicle settle.
4. Repeat this step two more times.
5. Measure 78.7 cm (31 in) from the center of the rear wheel to the lower edge of the rocker panel.
6. Mark the spot.
7. Measure the K dimension (from the lower edge of the rocker panel to the ground). Refer to Trim Height Specifications in Suspension General Diagnosis.
8. If the K dimension is not within specification adjust the D height.
9. To adjust the rear spring to correct the D height. Refer to Trim Height Adjustment in Rear Suspension.