Bumper to Bumper Radio, the car guys on KTAR, 92.3 FM in Phoenix, AZ, broadcast every Saturday from 11:00 am to noon. On this show, Matt Allen of Virginia Auto Service in Phoenix, AZ talks about how a quality auto repair shop should test and diagnose a problem with your vehicle. Also on this show:

• Should you trust a shop that offers "free" diagnostic services?
• How often do auto repair shops offer their employees additional diagnostic training?
• How often proper testing will require the removal of components from your vehicle.
• 2008 Hyundai Elantra: After a brake fluid flush, my brakes are still having issues. What else could be the cause of this?
• 2014 Dodge Charger: What information can you give me about the diagnostic codes I'm reading (PO455) as well as the gas cap for my specific vehicle?
• 2001 Chevrolet S10: If I were to have my engine rebuilt, where would you recommend I go?
• 2013 Ford F150: My truck has been losing power once it hits a certain RPM. What could be the source of this issue?
• 2003 Lexus: Recently three different warning lights came on in one trip. Are these all related to one another?

Cars talked about on this show are the 2008 Hyundai Elantra, 2014 Dodge Charger, 2001 Chevrolet S10, 2013 Ford F150, and a 2003 Lexus.