Information

Repair Flow Chart

If an applied vehicle exhibits steering and/or body vibration, use the repair flow chart shown to determine the cause of the steering and/or body vibration and apply the correct repair procedure(s) provided in this bulletin.

NOTES:

Road Input (Road Surface Imperfections):

This bulletin does not apply to vibration complaints due to waves, cracks, expansion joints, and other imperfections that may exist on the surface of the road.

To confirm if the vibration incident is due to road input, road test a known good vehicle on the same road and compare vibration levels to the incident vehicle.

Vehicle Storage Affect On Tire Flat Spotting:

If the vehicle exhibits vibrations in the steering/floor/seat at highway speeds, the cause may be tire flat spotting due to storage. See Tire Flat Spotting Information for more detail.

Vehicles are shipped from the factory with tire pressure higher than the pressure recommended on the tire placard affixed to the vehicle's glove box lid and/or the Federal Motor Vehicle Safety Standard (FMVSS) certification label affixed to the driver's side door jam.

To minimize the possibility of flat spots occurring on new vehicles, take the following steps upon receipt of newly shipped vehicles:

1 Do not reduce tire pressure until the vehicle is in the final stages of being readied for customer delivery.

2. In addition, it is recommended to move each vehicle at least every two weeks. The vehicles should be moved at least ten inches each time.