D Height Measurement
NOTE:
The D height dimension measurement determines the proper rear end ride height. There is no adjustment procedure. Repair may require replacement of suspension components.
- With the vehicle on a flat surface, lift upward on the rear bumper 1.5 in. (38 mm).
- Release vehicle.
- Allow the vehicle to settle into position.
- Repeat the jouncing operation 2 more times for a total of 3 times.
- The D height is obtained by measuring the distance between the edge of the jounce cup along the jounce bumper center line and the jounce pad on the rear axle. See Fig 1 .
- If these measurements are out of specifications, inspect for the following conditions:
- Sagging front suspension. May need to replace torsion bar.
- Sagging rear coil springs. May need to replace rear suspension Coil Springs.
- Proper air suspension operation.
- Worn rear suspension components.
- Improper tire inflation.
- Improper weight distribution.
- Collision damage.