Savana 2500 V8-4.8L (2008)
1. For vehicles equipped with a torsion bar suspension, turn the bolt (1) that contacts the torsion arm as needed. One revolution of the bolt (1) into
the nut, increases the Z height by approximately 6.0 mm (0.2 in).
2. For vehicles without torsion bars replace damaged or worn components as necessary.
3. If these measurements are still out of specifications after adjustment or are not equipped with torsion bars, inspect for the following conditions:
*
Sagging front suspension. Refer to Front Coil Springs Replacement (See: Steering and Suspension/Suspension/Suspension Spring ( Coil / Leaf
)/Service and Repair/Front Suspension Coil Spring) or Torsion Bar and Support Assembly Replacement (See: Steering and
Suspension/Suspension/Torsion Bar/Service and Repair) .
*
Collision damage
D Height Measurement
The D height measurement determines the proper ride height for the rear end of the vehicle. There is no adjustment procedure. Repair may require
replacement of suspension components.
Important: All dimensions are measured vertical to the ground. Trim heights should be within 12 mm (0.47 in) to be considered correct.
1. Place hand on the rear bumper and jounce the rear of the vehicle. Ensure that there is at least 38 mm (1.5 in) of movement while jouncing.
2. With the vehicle on a flat surface, lift upward on the rear bumper 38 mm (1.5 in).
3. Allow the vehicle to settle into position.
Important: Measure the metal to metal contact points of the rear axle to the frame on the inboard side of the leaf springs.
4. Measure the D height by measuring the distance between the rear axle tube or rear axle bracket on vehicles with 7300 GVW rating and the frame.
5. Repeat the jouncing operation 2 more times for a total of 3 times.
6. Use the highest and lowest measurements to calculate the average height.
7. The true D height dimension is the average of the highest and the lowest measurements. Refer to Trim Height Specifications (See:
Specifications/Mechanical Specifications/Suspension/System Specifications/Trim Height Specifications) .
8. If these measurements are out of specifications, inspect for the following conditions:
*
Sagging rear leaf springs
Refer to Leaf Spring Replacement (See: Steering and Suspension/Suspension/Suspension Spring ( Coil / Leaf )/Service and Repair/Rear
Suspension Leaf Spring) .
*
Collision damage