nekrostatic Posted September 21, 2020 Report Share Posted September 21, 2020 Hey all! New member here, going to have a few W-body specific questions as I head into an LS4 swap. I spent most of today pulling the harness out a 2007 Chevy Impala SS. I THINK I have everything that I need, but when I was tossing dash parts into the trunk, I saw a module located on the driver's side behind the felt, near the tail light. Does anyone know what it is? I forgot to get a part number off of it. Quote Link to comment Share on other sites More sharing options...
digitaloutsider Posted September 22, 2020 Report Share Posted September 22, 2020 That's usually where the OnStar box is located. Anything you need powertrain related should be in the engine bay. I don't recall if these need a BCM to work or not or if there is a separate TCM for them, I'm not super versed in the LS stuff in a W car. Quote Link to comment Share on other sites More sharing options...
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