Noise, Vibration and Harshness (NVH)

Symptom Chart

Condition(s):

High-Speed Shake

Possible Source(s):
- Wheel end vibration.
- Engine/transmission.
- Driveline.
Action(s) to take:
- GO to [Pinpoint Test A]. Pinpoint Tests

Tip-In Moan

Possible Source(s):
- Air cleaner.
- Power steering (PS).
- Powertrain.
- Engine mounts.
- Exhaust system.
Action(s) to take:
- GO to [Pinpoint Test B]. Pinpoint Tests

Idle Boom/Shake/Vibration, Or Shudder

Possible Source(s):
- Cable(s)/hoses(s).
- Engine mounts.
- Exhaust system.
- Belt/pulleys.
Action(s) to take:
- GO to [Pinpoint Test C]. Pinpoint Tests

Wheel End Vibration Analysis

Possible Source(s):
- Suspension/rear drive half shaft and CV joints.
- Tires/wheels.
- Wheel bearings.
- Rear wheel drive half shaft joint boots.
Action(s) to take:
- GO to [Pinpoint Test D]. Pinpoint Tests

Non-Axle Noise

Possible Source(s):
- Trim/mouldings.
- A/C system.
- Accessories.
Action(s) to take:
- GO to [Pinpoint Test E]. Pinpoint Tests