GM GMAX 3.5-3.6 CONVERSION FOR GM CARS

*** This service is compatible with GM HMI 3.5 and 3.6 versions only. 3.0 is NOT supported!!! (see photos) ***

Customtronix ICOS GMAX conversion converts all the new GM cars with HMI 3.5 and 3.6 units (IOU) from 2019 and up manufactured by Harman Becker to EU standard.

Supported menu languages are Bulgarian, Chinese, Croatian, Czech, Danish, Dutch, English, Finnish, French, German, Greek, Hungarian, Italian, Japanese, Korean, Norwegian, Polish, Portuguese, Romanian, Russian, Serbian, Slovenian, Spanish, Swedish, Thai, Turkish and Ukranian.

The radio will also be converted to support European style FM-frequencies. The HMI unit needs to be shipped to us in Sweden for conversion. (See photos)

An SD-card with European maps will be included with this conversion.

Please check this youtube clip for more information: https://youtu.be/2M-YApUc0K4

Compatible vehicle brands; model year 2019 – up:

1. Chevrolet (all models)
2. Cadillac (all models, except Escalade)
3. GMC (all models)
4. Buick (all models)

Important points about the conversion:

• To do the conversion you will need to send us the HMI-box (see photo)
• Please mark your module(s) with ther respective VIN-numbers. Installing the wrong HMI unit in the wrong car is NOT going to work!
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When ordering make sure to leave following info about your GM car.

1. VIN-number (all 17)
2. model year,
3. model.

We do not have access to GM’s VIN number system and need it in clear text…