Stick with $0D, perhaps look at the timing table for BNKM which is the 1-ton 350/4L80E van. IIRC it is a $OE file.
As for the speed sensor the newer PCM only needs the speed signal input into the 2,000 ppm input if you are running without an E-trans. That means your vans stock VSS signal can be plugged right into the PCM and good to go. You need to disable the Computer Controlled Automatic flag in the options and Enable the TCC ONLY flag.
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