1. Introduction
This manual provides detailed instructions for the installation and operation of the Pinmany GMF7.20 CAN Bus Decoder. This device is designed to integrate with Android head units in compatible Chevrolet, Buick, and GMC vehicles, enabling communication between the vehicle's CAN Bus system and the aftermarket head unit.
2. Product Overview
The GMF7.20 is a compact CAN Bus data converter housed in a black plastic shell. It facilitates the transfer of vehicle data to your Android head unit, ensuring proper functionality of features like steering wheel controls, reverse camera signals, and door status, depending on the vehicle and head unit capabilities.
Image: Pinmany GMF7.20 CAN Bus Decoder unit.
Image: GMF7.20 CAN Bus Decoder showing model number and compatible vehicle types.
3. Specifications
| Attribute | Value |
|---|---|
| Model Name | GMF7.20 |
| Brand Name | pinmany |
| Manufacturer | Hiworld |
| Special Features | CAN Bus Data Converter |
| Item Type | Cables, Adapters & Sockets |
| Material | Black plastic shell |
| Item Size | 55mm*45mm*17mm |
| Item Weight | 35g |
| Voltage | 12 V |
| Interface | PH2.0-20pin |
| Operating Voltage Range | +9V~+16V |
| Origin | Mainland China |
Image: Product dimensions (55mm x 45mm x 17mm). Note: Manual measurement, error ±1mm.
4. Compatibility
4.1. Suitable Head Unit
This CAN Bus decoder is designed to be adapted to 7, 8, 9, and 10-inch Android Head units.
Image: The product is compatible with 7, 8, 9, and 10-inch Android Head units.
4.2. Suitable Car Models
The GMF7.20 CAN Bus Decoder is compatible with various Chevrolet, Buick, and GMC models. Please verify your specific vehicle model and year against the list below:
- For Buick: Excelle (2018~Present), Encore (2012~Present), Encore GX (2020~Present), Regal (2009~Present), LaCrosse (2010~Present), Excelle XT (2009~2014), Excelle GT (2009~2014), Envision (2014~2021), GS Verano GS (2016~Present), GL8 (2010~2016), GL8 (w/o ES) (2017~2019).
- For Chevrolet: Tahoe (2015~2020), Suburban (2015~2020), Silverado (2014~2018), Aveo/Sonic (2011~2014), Trax (2013~2018), Cruze (2008~2018), Spin (2013~2019), Malibu (2012~2021), Malibu XL (2016~Present), Equinox (2017~Present), Trailblazer (SUV) (2017~Present), Orlando (2010~2017), S10 (2012~21, GMT355/700), Blazer (2020~Present), Colorado (2018~Present), Traverse (2018~Present).
- For GMC: Sierra (2014~2018), Jimmy (2019~Present).
Image: Detailed list of compatible Buick, Chevrolet, and GMC vehicle models and years.
5. Setup and Installation
5.1. Pre-installation Notes
- The operating voltage range for this decoder is +9V to +16V. Voltages outside this range can cause damage.
- The product features a 20-pin connector with a pin pitch of 2.0mm.
- This CAN Bus decoder is not supplied with cables. Ensure you have the appropriate wiring harness.
- Strictly follow the pin function descriptions for wiring. Improper wiring can permanently damage the CAN Bus decoder.
- Before installation, you must configure the CAN Bus settings on your Android radio. Verify that your car model is displayed in the CAN Bus settings screen of your Android radio before purchase.
- If you are unsure about fitting or wiring, please contact support before proceeding with installation.
5.2. Pin Definition (20-pin Connector)
Refer to the table below for the pin assignments of the 20-pin connector:
| Pin No. | Function |
|---|---|
| 1 | GND |
| 2 | BATT |
| 3 | LIN |
| 4 | GM-LIN |
| 5 | ILL-OUT |
| 6 | ACC-OUT |
| 7 | PARK-OUT |
| 8 | REV-OUT |
| 9 | FP-RESET |
| 10 | AMP-CON |
| 11 | NC (No Connection) |
| 12 | FP-WAKE |
| 13 | UART-RX |
| 14 | NC (No Connection) |
| 15 | NC (No Connection) |
| 16 | UART-TX |
| 17 | CGI-L |
| 18 | CGI-H |
| 19 | SPK- |
| 20 | SPK+ |
Image: Pin definition for the 20-pin connector on the CAN Bus Decoder.
5.3. Step-by-Step Installation
-
Connect the Cable Adapter:
Locate the 20-pin CAN plug of your vehicle's wiring harness. Carefully plug it into the corresponding 20-pin socket of the CAN Bus Box.
Image: Step 1 - Connection of the cable adapter to the CAN Bus Box.
-
Set up CAN on Android Head Unit:
The exact steps may vary depending on your Android head unit model. The following is a general guide:
- Navigate to the Settings menu on your Android head unit (often represented by a gear icon).
- Look for Car Settings or similar options.
- Find and select the Factory settings option.
- You will likely be prompted to enter a factory password. Common passwords include: 3368, 1617, 8317, 8888. If these do not work, consult your head unit vendor.
- Within the factory settings, locate the CAN bus setting.
Image: Android head unit setup process, including accessing factory settings and CAN bus configuration.
-
Select CAN Bus Box Manufacturer & Car Model:
- In the CAN bus settings, select the manufacturer of your CAN Bus Box (e.g., Hiworld).
- Then, select the correct car model and year from the provided list (e.g., for Chevrolet/Buick/GMC, choose the specific model like GM_W01 for Cruze/Trax/Encore/Malibu).
- Save your settings and reboot the head unit for changes to take effect.
Image: Android head unit interface for selecting the CAN Bus manufacturer and specific car model.
6. Operating Instructions
Once properly installed and configured, the GMF7.20 CAN Bus Decoder operates automatically. It translates the vehicle's CAN Bus signals into a format compatible with your Android head unit, enabling various vehicle functions to be controlled or displayed through the head unit interface. No further manual operation of the decoder itself is typically required after initial setup.
7. Maintenance
The Pinmany GMF7.20 CAN Bus Decoder is a low-maintenance device. To ensure its longevity and proper function:
- Keep the device dry and free from moisture.
- Avoid exposing the device to extreme temperatures.
- Ensure all connections remain secure and free from corrosion.
- Do not attempt to open or modify the device, as this will void any potential warranty and may cause damage.
8. Troubleshooting
If you encounter issues after installing the GMF7.20 CAN Bus Decoder, consider the following troubleshooting steps:
- No Functionality: Double-check all wiring connections to ensure they are secure and correctly matched according to the pin definition. Verify the operating voltage is within the +9V~+16V range.
- Incorrect Vehicle Data/Controls: Re-enter the Android head unit's factory settings and confirm that the correct CAN Bus Box manufacturer and car model have been selected. Save and reboot the head unit.
- Unable to Access Factory Settings: If the provided factory passwords (3368, 1617, 8317, 8888) do not work, contact your Android head unit vendor for the correct password.
- Device Damage: Improper wiring can cause damage to the CAN Bus decoder. Always ensure correct wiring before powering on the system.
- Uncertainty: If you are unsure about any step of the installation or configuration, it is recommended to consult with a professional installer or contact the product vendor for support.
9. Warranty and Support
The Pinmany GMF7.20 CAN Bus Decoder is manufactured by Hiworld. For any technical support, warranty claims, or further inquiries, please contact your original vendor or the manufacturer directly. Ensure you retain your proof of purchase for warranty purposes.