Had a dash full of lights about the engine. I have a diagnostic computer, but a vacuum leak was not too helpful. I checked and rechecked the fuel cap. I had Brian and the guys take a look, they also did and oil and air filter change. He said the seals in the gas cap were no good, but he did not have the cap in stock. I went to the dealership and bought one. All fixed!! I paid less for all that than the three verbal quotes I got on the phone to diagnose the engine lights at local stations...and that did not count the oil and change of filters or any repairs!!!