Buick Repair & Service in San Marcos, Texas

About Buick Service at Riley Auto Care

Buick occupies a distinctive position in the American automotive landscape — offering genuine luxury, quiet refinement, and thoughtful features at a price point that makes premium ownership accessible. The Enclave, Envision, and LaCrosse are popular choices for drivers who want a step up from mainstream brands without the full cost of European luxury. At Riley Auto Care & Transmissions, we service the complete Buick lineup and understand the specific maintenance needs that keep these vehicles performing at their best.

Buick's 3.6L V6 engine — found in the Enclave and LaCrosse — is a capable and refined powerplant that benefits from timely oil service and timing chain maintenance. The Active Fuel Management (AFM) system on V6 and V8 Buick models can develop lifter failures over time, particularly when oil changes are delayed. We can diagnose AFM-related misfires and perform lifter replacements or AFM disabling to prevent recurring issues.

Buick's 6T70 and 9T65 automatic transmissions are shared with other GM vehicles and respond well to regular fluid and filter service. As HP Tuners certified technicians, we can also recalibrate Buick's engine and transmission control modules for improved throttle response and shift quality. Serving Buick owners throughout the area, we provide the quality, attentive service that matches the refinement your vehicle was designed to deliver.