Ram Repair & Service in San Marcos, Texas

About Ram Service at Riley Auto Care

Ram trucks are built for serious work — hauling heavy loads, towing trailers, and handling whatever the job demands. The Ram 1500, 2500, and 3500 are consistently ranked among the best trucks in America for capability and comfort, and they require service from a shop that understands their engineering inside and out. Riley Auto Care & Transmissions specializes in Ram trucks and provides the expert care these hardworking vehicles deserve.

For Ram 2500 and 3500 owners running the legendary 6.7L Cummins diesel, we provide comprehensive diesel service including EGR system maintenance, fuel injector cleaning, turbocharger inspection, and DEF system service. The Cummins is one of the most durable diesel engines ever built, but it requires proper maintenance to reach its full potential. We also service the 68RFE and Aisin AS69RC automatic transmissions commonly paired with the Cummins, which are known to benefit from upgraded fluid and regular service.

As HP Tuners certified technicians, we can recalibrate your Ram's ECU for improved towing performance, throttle response, or fuel economy — whether you're running the HEMI V8 or the EcoDiesel. The 8HP75 ZF transmission found in Ram 1500 models is a sophisticated unit that requires proper fluid and service to maintain smooth, reliable shifting. Serving Ram owners throughout the region, we deliver the heavy-duty expertise your truck was built to receive.