[olrocker]

First I’d take it right to where I bought it and ask them if it was installed at their dealership. If so, ask them to remove it.

If not maybe try to trace it back to the original dealer where it was bought when new.

If you still have no luck Take it to a REPUTABLE mechanic and have them remove EVERYTHING including whatever the aftermarket module is and all the aftermarket wiring and restore the car completely stock.

You do NOT want that crap interfering with the factory wiring, modules, and other factiry ekectrinucs and accessories.