D Height Measurement
WARNING: This page is about a different car, the 2007 Hummer H2. However, it is still accessible from the selected car via links, so may be relevant.
The D height dimension measurement determines the proper rear end ride height. No adjustment procedure is available. Repair may require replacement of suspension components.
- With the vehicle on a flat surface, lift upward on the rear bumper 38 mm (1.5 in).
- Suddenly remove your hands.
- Allow the vehicle to settle into position.
- Repeat the jouncing operation 2 more 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.
- The true D height dimension number is the average of the high and the low measurements. Refer to Trim Height Specifications .
- If these measurements are out of specifications, inspect for the following conditions:
- Sagging front suspension-Refer to Torsion Bar Replacement .
- Sagging rear coil springs-Refer to Coil Spring Replacement .
- Proper air suspension operation
- Worn rear suspension components
- Improper tire inflation-Refer to Vehicle Certification, Tire Place Card, Anti-Theft and Service Parts ID Label .
- Improper weight distribution
- Collision damage