I don't see anything definitive there. It talks about vehicle speed signal users, but not specifically the speedometer. Tell you what, go program your Bowler harness with a value that is way off. Then go for a drive and see if your speedometer is affected. If it's a wheel sensor that is used, the speedo should still be accurate, but the VSS output will be way off.I searched through the FSM and there's definitely data from the ABS wheel speed sensor system that's being used, but the speedometer is driven by the PCM which appears to be referencing the VSS. Below is an excerpt.