We earn commissions from purchases you make using links in our articles. Learn more. If your car or truck’s check engine light is on, there’s a stumble when accelerating, or if the transmission just ...

John Paul, AAA Northeast's Car Doctor, hears from a reader deciding between a vehicle code reader and a scan tool. The post Comparing code readers and scan tools appeared first on Boston.com.

It is never fun when you’re driving along and suddenly one of the lights on your dash appears to let you know that something isn’t right with your car. You can go to a dealership and pay a lot of ...