Recommended Wiring Harnesses for a 2023 GMC Acadia w/out the Factory Tow Package
Updated 09/12/2025 | Published 05/16/2025
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Question:
I have a 2023 GMC Acadia WITHOUT the factory tow package and I am curious to know what wiring harness you guys have that will work for the trailer wiring? Thank you!
asked by: Kieran C
Expert Reply:
Hey Kieran. The 2023 GMC Acadia's all come with the necessary wiring beneath your rear bumper. As far as wiring is concerned, the only difference in yours and one with the towing package is yours doesn't have the 4-way or 7-way connector. Here are the parts you will need to add a wiring harness to your Acadia:
4-Way Connector - Curt T-Connector Vehicle Wiring Harness item # C56325
7-Way Connector - Curt T-Connector Vehicle Wiring Harness item # C56326
I have linked a couple of installation videos below so you can see where to find the connectors.
What kind of trailer are you going to be towing?
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Jerred H.
9/12/2025
Hey Kieran, did you decide on the 4-way or 7-way connector for your Acadia? I'm curious to know how it worked out for your trailer setup, as it could help others in a similar situation.