Re: ABS control module location and how do you do a reset
Reply #5 –
Post the photos here - maybe one of us can help you. Here is what the one in a 2003 looks like - back wall near the slide manifolds; it's the silver box that says Wabco and is mounted so "Wabco" is upside down.

Yes, the silver box near the vacuum generator is likely the Allison ECU.