The parts may be more expensive but they have full warranties, you are assured of quality and the dealer will be able to give you proper tips on use and maintenance. Â. When your vehicle needs auto repair or truck repair , whether for engine repair , truck and car transmission system repair or replacement, make sure you bring it to an automotive shop that is an authorized dealer of reputable car parts such as AC Delco. That way, you’re sure that any car parts put in your …