SDGM Harness

Where to buy

Link to my Store:

SDGM Harness Set: https://shop.tlbb.ca/products/sdgm-harness

Harness Box 2x9 pin & 2x 13 pin: https://shop.tlbb.ca/products/openpilot-harness-box-v1-2x13-pin-and-v2-2x9-pin-with-rj-45-port

Link to my Etsy Store:

SDGM Harness Set: https://www.etsy.com/ca/listing/1840113327/sdgm-harness

Harness Box 2x9 pin & 2x 13 pin: https://www.etsy.com/ca/listing/1800366135/openpilot-harness-box-v1-2x13-pin-and-v2

Link to RetroPilot Store: https://shop.retropilot.org/product/sdgm-harness-set/

Product Description

This harness is 2x9 pin and works with 2x9 pin harness box

There are 2 types of SDGM Harness, SDGM A and SDGM B. Please make sure you choose the correct one for your vehicle.

Supported vehicles:

(If your car make is listed, but the year is different. SDGM might work if you have ACC or lane keep.)

SDGM A:

• Buick Enclave (2019)

• Buick Baby Enclave (CN)

• Chevy Volt (2019)

• Cadillac XT4 (2023)

• Chevy Traverse (2022, 2023)

• Chevy Malibu XL 2019

SDGM B:

• Cadillac XT6

• Chevy Blazer 2022, 2024, 2025

Please make sure your vehicle has a SDGM harness connection point to proceed

Where to find your SDGM connection point:

The SDGM is under the dash and it blocks the CAN bus data from the OBD-II port.

It should near the OBD port.

Shout out to Mochi, who helped with various GM vehicle harness developments.

Please refer to Mochi's instructions about SDGM:

https://github.com/garrettpall/GMSDGMConnector/blob/main/2019_volt/2019_Volt_Readme.md