Southern Utah Auto Tech has many years of experience located in St George, UT. Southern Utah Auto Tech we guarantee you 100 percent satisfaction. We have the knowledge and the experience to care for your car right the first time. brï Used car checkï Brakesï Air conditioning repairï Transmission replacementï Carburetor overhaulsï ClutchesbrYour time and business are important to us. We provide one-day service on most jobs, offer early morning and night drop-off services and offer special discounts on recommended services.