I have a 1997 Astro van with a 350 V8 running with 02 Express tune on a 0411 PCM, that has rusted out. So I have put drivetrain with updated wiring into a 2001 Astro body. My issue is the PRNDL display on cluster doesn't show, and the overhead console doesn't update properly. The console was an issue on the older van too.

With an Astro tune on the PCM those things work, but of course the engine doesn't run on all cylinders. Anybody know a way to combine them both? The PRNDL info is sent over the serial bus to the cluster, but the Express is hard wired.

Thanks for any tips!

Scott