Initial Inspection and Diagnostic Overview

1. Road test.
- Verify the customer's concern by performing a road test-on a smooth road.

2. Inspect tires.
- Check the tire pressure with all normal loads in the vehicle and the tires cold; refer to the vehicle certification (VC) label.
- Verify that all tires are sized to specification.
- Inspect the tires for improper wear and damage.

3. Inspect chassis and underbody.
- Remove any excessive accumulation of mud, dirt or road deposits from the chassis and underbody.
Inspect the following:
- Front wheel bearings
- Loose or damaged front or rear suspension components
- Loose, damaged or missing suspension fastener(s)
- Loose or damaged shackle(s)
- Improper spring usage
- Damaged or sagging spring(s)
- Improper torsion bar usage
- Damaged or sagging torsion bar(s)
- Damaged air spring(s)
- Damaged or leaking shock absorber(s)
- Worn or damaged suspension bushing(s)
- Loose, worn or damaged steering system components
- Damaged axle components

4. Inspect for aftermarket equipment.
- Check for aftermarket changes to the steering, suspension, wheel and tire components (such as competition, heavy duty, etc.) The specifications shown in this manual do not apply to vehicles equipped with aftermarket equipment.

5. If an obvious cause for an observed or reported condition is found, correct the cause (if possible) before proceeding to the next step.
6. If the fault is not visually evident, determine the symptom and proceed to the symptom chart. Diagnosis by Symptom