I just had my rear deck changed to a fixed wing by a local shop. I am now throwing 2 codes: ABS and PSM. I know they did some fiddling with the micros in the engine compartment which open the regular spoiler. Any help to get this right is appreciated.

 

Did they change the wiring harness? There is no need to "tinker" with the wireing when going to a fixed wing, all you need to do is replace the factory harness with the GT2/3 harness.