The easiest thing to do, and relieve any of those haunting thoughts, is hopefully get back to the dealer and get a print out of services done. It's doubtful that if a service was done as you feel it should have been, and rightly so, that it was not entered into their system. Go in, sit down and get the full picture. If for some reason it was not done at 12K then it should be done. Those 3K miles are not the end of the world. BUT that service interval registered in system at 12K is how the warranty is maintained. I would make sure they acknowledge that now...instead of later, claiming the car was not serviced at 12 as specified. You will rest better...
