The Advance Auto Parts on Southmore Ave in Pasadena provides automotive aftermarket products and free store services. Customers report it offers some of the best customer service in Pasadena, with multiple reviews highlighting helpful and professional employees. Staff are noted for being very willing to help, verifying politeness, and not allowing customers to leave until their satisfaction is met. Specific assistance mentioned includes employees putting oil in a car, helping to get parts to the location ASAP when not in stock, and having parts ready on the counter for quick pickup. The store offers free services like battery testing and installation, engine code scanning, and oil recycling. Customers express being truly grateful for the service, which makes their tasks smoother and is described as certainly great customer service.