S & S Automotive and Diesel on River Street in Lakeside pairs a fixed-location repair bay with mobile recovery capability, dispatching technicians for roadside diagnostics and breakdown assistance across East County San Diego. The mobile unit's recovery workflow integrates with Letty's Towing Corporation on Winter Gardens Boulevard for vehicles that require flatbed transport rather than on-site repair. In-shop services cover both gasoline and diesel platforms, with diagnostic, mechanical, and electrical work spanning engine and transmission removal, turbocharger service, fuel-injector cleaning, and cooling-system overhaul. Diesel-specific parts sourcing for Cummins, Duramax, and Power Stroke platforms draws from regional suppliers including San Diego Engine Parts in neighboring Santee for hard-to-find OEM components. The River Street location sits within Lakeside's central grid between Maine Avenue and Lindo Lake County Park, giving diesel trucks and fleet vehicles a service point away from the congested Winter Gardens Boulevard corridor.