Had a problem with a check engine light on my Chevy pickup. Dropped by Dirks and receptionist Brenda, said they would be glad to check the problem. The tech. person Mike, hooked up his equipment and informed me that I had two error codes. He told me what needed to be done to correct the problem. To my surprise he explained what parts I needed and that I could easily do the repair myself! He also recomended a product to use to help prevent furture fuel/emission related issues. Dirks did not charge me for that service!!!!