Why Accurate Transmission Diagnostics Matter
A transmission problem can show up as a warning light, a rough shift, a shudder, or a complete failure to move. Without proper diagnostics, it's easy to replace parts that aren't the problem — costing you time and money. At Riley Auto Care & Transmissions, we use a combination of electronic scanning and hands-on mechanical testing to find the real cause before any repair work begins.
Our technicians have decades of experience with automatic, manual, CVT, and dual-clutch transmissions. We know what the data means and how to interpret it in the context of your specific vehicle and complaint.
Our Transmission Diagnostic Process
We use a multi-step approach to ensure nothing is missed:
- Full OBD-II scan for stored and pending transmission codes
- Real-time data streaming to monitor shift solenoids, TCC lockup, and fluid temp
- Mechanical line pressure testing at idle and stall
- Road test to replicate the customer's complaint under real driving conditions
- Visual inspection for fluid leaks, wiring damage, and external component wear
- Stall speed test to evaluate torque converter and clutch pack condition
Common Transmission Problems We Diagnose
Our diagnostic process covers the full range of transmission complaints:
- Check engine or transmission warning light
- Slipping, flaring, or delayed gear engagement
- Harsh or erratic shifts
- Torque converter shudder or vibration
- No reverse or no forward movement
- Overheating or fluid leaks
- Unusual noises — whining, clunking, or grinding
- Transmission stuck in limp mode
Serving San Marcos and Central Texas
Riley Auto Care & Transmissions has been diagnosing and repairing transmissions in San Marcos, TX since 1978. We serve customers from Kyle, Buda, Seguin, New Braunfels, and the surrounding Hays County area. Our shop at 1334 TX-123 is easy to reach from I-35.
Schedule Transmission Diagnostics — San Marcos, TX
Don't guess at a transmission problem. Bring your vehicle to Riley Auto Care & Transmissions for a thorough diagnostic evaluation. We'll tell you exactly what's wrong and what it will take to fix it — no surprises.
Location
Transmission Diagnostics Near Me — San Marcos, TX
Conveniently located at 1334 TX-123, San Marcos, TX 78666 — easy access from I-35, serving Kyle, Buda, New Braunfels, Wimberley, and all of Central Texas.