When a customer brings in a vehicle in need of new bearings, it can be tempting to dive right into the known problem. You know exactly what is going on and the best manner to repair it. However, modern cars have hundreds of sensors that must work together to produce a clear image of the vehicle through the on-board computer. As a result, it's always important that you check the computer for any error codes even if the check engine, tires, or transmission lights have not come on. This will ensure you do not repair something and discover afterwards that you need to perform additional repairs.