Commercial Trucks and Busses

 We worked with Allison Transmission to develop a quick, easy to use, accurate vibration diagnostic tool for the entire commercial truck and automotive industry. The result is NVH version 3.0! 

The NVH app has been enhanced with 25 new features to quickly diagnose commercial truck vibrations

Commercial trucks and busses are fully supported by the NVH app.  Any Class 4-8 truck or bus with the following axles and transmissions are directly supported by the NVH app. Other truck axles and transmissions can also be used, but the user of the app is required to supply their truck’s own gear ratios.

Transmissions (1205 Models)

  • Allison: 3 – 10 Speed Transmissions
  • Detroit: 12 Speed Transmissions
  • Eaton/Fuller: 5 – 18 Speed Transmissions
  • PACCAR – 12 Speed Transmissions
  • Tremec: 5 – 18 Speed Transmissions
  • Volvo/Mack: 9 – 14 Speed Transmissions
  • ZF Meritor: 9 – 16 Speed Transmissions

Axles (381 Models)

  • Dana Spicer Axles
    • Single Axles
    • Tandem Axles
    • Tridem Axles
  • Detroit Axles
    • Single Axles
    • Tandem Axles
  • Eaton Spicer Axles
    • Single Axles
    • Tandem Axles
  • ZF Meritor Spicer Axles
    • Single Axles
    • Tandem Axles
    • Tridem Axles
Class 4-8 Trucks iPad
Class 4-8 Trucks

NOTICE: Electric Vehicles (EV) have fewer moving parts than a traditional Internal Combustion Engine (ICE) and transmission equipped vehicle. There is still a possibility of an EV experiencing a tire speed related vibration or an electric motor speed related vibration. The NVH app is great at detecting tire speed related vibrations, but detecting electric motor speed related vibrations has some limitations depending on the vehicle’s gear reduction gear ratio and the hardware in your phone or tablet**.

Although electric motor vibrations are very rare on vehicles, the electric motors in some electric vehicles rotate at a very high RPM at highway vehicle speeds. The ability of the NVH app to measure electric motor vibrations above 100 Hz (6000 RPM) can be limited by the iPhone hardware, not the app. Many Android phones/tablets have the ability to measure higher frequencies than 100 Hz. It is possible that electric motor vibrations will be detectable at lower vehicle speeds.

**Apple iOS devices with NVH version 4.0 or higher are electric vehicle ready. Android devices with NVH for Android version 3.3 will also be updated to 4.0 in 2022 to work with electric vehicles.


Turn your Phone or Tablet into an all-in-one Noise, Vibration, and Harshness (NVH) diagnostic tool! Purchase our new App to use the internal sensors of your Phone or Tablet to diagnose automotive and truck vibration problems. There are close to 300 individual vibration sources on a typical vehicle; the NVH App knows each one of them and can guide you through the entire diagnostic and repair procedures for each one of them.

What issues have you had with diagnosing vibration, harshness and noise issues?

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