○ About Modules
○ OE DRAC Module
○ OE VSSB Module
○ Custom Module
○ DIY Dip Module
○ Hummer Module


○ Troubleshooting For UD Modules

○ Consulting For Adaptations


○ Wiring
○ Mounting
○ Senders

○ Policy
○ Warranty
○ Shipping
○ FAQ
○ Core

@ Email Form


H1 Hummer DRAC Module VSSB Module OE & Custom Calibration


OE H1 Hummer Repacement VSSB Module
This replacement module is calibrated to match your Hummer's factory calibration using the stock gear ratio and tire size. Select the gear ratio and enter your vehicle year, model in the form. This can be used if you simply swapped your gear ratio to another OE Ratio and kept factory tires (like 2.72 to 2.56 swap).

  • $10 Core Charge (shows as Handling) applies

  • Gear Ratio $125
    Year - Model
    1998 H1 Hummer

    Custom Calibration DRAC VSSB Based on Gear Ratio & Tire Size
    This module is calibrated based on gear ratio and tire size. This calibration will get you a factory quality calibration. Select your AMG gear ratio and enter your tire size. The vehicle information is also helpful. Includes the mounting velcro for the dog-house.

  • $10 Core Charge (shows as Handling) applies





  • Gear Ratio $125
    Tire Size
    37x12.5 R16.5
    Year - Model
    1998 H1 Hummer


    These module options will be shipped out next day via USPS Priority Mail.

    USPS Express Mail & International Priority Mail available at checkout.


    Main Module Page | Warranty Info | Questions/Contact Us

    © 2019 UD Module