Comparing the customer's vehicle to a KNOWN GOOD vehicle that is essentially
identical will help determine if the customer's concern may be characteristic of a
vehicle design. To arrive at a valid conclusion, the comparison must be performed
under the same conditions, using the same criteria, on a vehicle that has the same
option content as the customer's vehicle.
The comparison vehicle must match the customer's vehicle in the following areas:
| • | Powertrain configuration |
| • | Driveline configuration |
| • | Tire/wheel size and type |
