What is NOT a vehicle information item necessary when preparing a vehicle repair order?

Preparing a vehicle repair order requires specific information that helps ensure proper service delivery and communication between the service advisor and the customer. Among the items listed, the transmission model is not essential for preparing a repair order.

The vehicle make and model are crucial because they inform the technician of the specific features and specifications of the vehicle, allowing for accurate service. The vehicle identification number (VIN) is equally important as it uniquely identifies the vehicle and provides a wealth of information regarding its history, equipment, and recalls. The customer's contact number is necessary for communication purposes, ensuring that the service department can update the customer on the status of their vehicle or discuss any additional findings.

In contrast, knowing the specific transmission model may be relevant for certain types of repairs, but it is not a fundamental piece of information required to initiate and document the repair order. Thus, it stands out as the least necessary item among those listed.