You've got a million things going on this week, and then your check engine light flickers on. Don't panic. Bringing your car to Greylock Repair Center is the easiest way to determine what's going on with your vehicle. Once we've diagnosed the problem, we'll take care of the repairs you need. You'll be back on the road in no time. You've got a million things going on this week, and then your check engine light flickers on. Don't panic. Bringing your car to Greylock Repair Center is the easiest way to determine what's going on with your vehicle. Once we've diagnosed the problem, we'll take care of the repairs you need. You'll be back on the road in no time.