Full System Vehicle Health Check for GM Vehicles
The VdiagTool D501 is a professional full-system diagnostic scanner specially designed for GM vehicles, including Buick, Chevrolet, Cadillac, and GMC. It delivers a complete vehicle health check, providing access to all major control modules such as ECM, ABS, SRS, BCM, EPB, TPMS, EPS, and more — ensuring no fault code is left behind. With fast auto-scanning, accurate fault code reading and clearing, and real-time data monitoring, the D501 helps you quickly identify issues and maintain peak vehicle performance. The intuitive interface makes diagnostics simple and efficient, whether you’re a professional technician or a GM vehicle owner.
All-in-One OBD2 Diagnostics for Smarter Vehicle Maintenance
Turn your smartphone into a powerful diagnostic center with the VdiagTool D501. This all-in-one OBD2 scanner gives you full access to essential vehicle diagnostics, making car health checks simple, fast, and accurate. With support for reading and clearing fault codes, live data streaming, freeze frame viewing, I/M readiness checks, EVAP system tests, O2 sensor tests, vehicle information, and on-board monitor tests, the D501 covers everything you need for daily diagnostics and maintenance.
Professional Bi-Directional Control for Faster, Smarter Diagnostics
Take full control of vehicle diagnostics with advanced Bi-Directional Control. This feature allows you to actively send commands to a car’s ECUs, letting you test and activate components like ABS pumps, injectors, windows, door locks, headlights, wipers, fans, valves, and more—directly from the tool. By verifying real-time component responses, technicians can quickly pinpoint faults, reduce diagnostic time, and eliminate unnecessary part replacements.
28+ Advanced Special Functions for GM Vehicles
Unlock powerful GM-specific diagnostics with 28+ special functions designed for Buick, Chevrolet, Cadillac, and GMC models. Easily perform key services such as module resets, relearns, adaptations, calibrations, battery matching, steering angle calibration, injector coding, ABS bleeding, TPMS relearn, and more. Built to handle complex maintenance tasks efficiently, this tool helps you service GM vehicles with greater accuracy and confidence.
Note: Available service functions vary by vehicle. Please contact our customer support team via online chat or email us at service@vdiagtool.com to confirm compatibility in advance.
J2534 Pass-Thru Programming Support
The device supports J2534 pass-thru programming, enabling professional-level ECU reprogramming and module updates for GM vehicles.
To use J2534 programming, you will need:
- A PC/Laptop running Windows 10 or later
- VDIAGTOOL driver software installed
- Official OEM factory diagnostic software for the vehicle brand
Download the VDIAGTOOL driver here: download the driver
Once these tools are prepared, the D501 can operate as a J2534 pass-thru device, enabling the PC to communicate with the vehicle for software updates, programming, and module configuration.
All-in-One Vehicle Diagnostics
Start with Auto Scan, which instantly performs a full-system sweep across the engine, ABS, SRS, and transmission to provide a clear overview of your vehicle’s condition within seconds. The Vehicle Performance Test delivers real-world insights into acceleration, fuel efficiency, engine load, and voltage stability, helping you better understand how your car performs on the road. With Live Data Graphing, critical parameters such as sensor readings, temperatures, fuel trims, and RPM curves are displayed in real time through clear, easy-to-read charts for faster analysis. When results need to be saved or shared, Diagnostic Report Sharing allows you to generate professional-grade reports instantly, making collaboration and record-keeping simple and efficient.
GM Vehicle Coverage – Wide Compatibility & Global Language Support
Designed specifically for GM vehicles, this diagnostic tool is fully compatible with Buick, Chevrolet, Cadillac, and GMC models, covering a wide range of systems and applications. Whether you’re performing routine checks or advanced diagnostics, it delivers accurate and reliable results you can trust.
The D501 supports 22+ languages, including Arabic, Traditional Chinese, Danish, German, Greek, English, Spanish, Finnish, French, Hungarian, Italian, Japanese, Korean, Dutch, Norwegian, Polish, Portuguese, Russian, Swedish, Thai, Turkish, and Vietnamese.
How to Use the D501 OBD2 Scanner
- Step 1: Download the "VdiagTool" App from Google Play or App Store.
- Step 2: Open the app, register an account, and then scan the QR code on the back of the device to activate it.
- Step 3: Plug the D501 OBD2 scanner with bidirectional control into OBD2 Port.
- Step 4: Turn on the ignition and start the car.
- Step 5: Click for BT setting on your phone/iPad for pairing and start the diagnosis.
Note: If there are any questions, please reach us via service@vdiagtool.com
Lifetime free updates, 2-Year Warranty & 24/7 Support
With lifetime free software updates, the D501 ensures you’re always equipped with the latest features and optimizations. It also comes with a 2-year warranty and a 30-day Hassle-free return/replacement policy. We’re committed to providing exceptional user experiences, so don’t hesitate to reach out for any support via service@vdiagtool.com.
Packing List & 2-Year Warranty
Package Box*1, D501 VCI Unit*1, Type-C Cable*1, Type-C to Type-A Adapter*1, Multilingual User Manual*1, Tool Kit*1.
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