Check excessive friction in the rear suspension as follows:

1. With the aid of another technician, lift up on the rear bumper and raise the vehicle as high as possible. Slowly release the bumper and allow the car to assume normal trim height.
2. Measure the distance from the floor to the center of the bumper.
3. Push down on the bumper, release slowly, and allow the car to assume normal trim height.
4. Measure the distance from the floor to the center of the bumper.

The difference between the 2 measurements should be less than 12.7 mm (0.50 in). If the difference exceeds this limit, inspect the control arms for damage or wear.