I'm using a painless VSS (2 pulse older version of the 60115), I am using a 16197427 PCM to run a Crossfire equipped 305 and 4L60E, in a 1971 Chev pick up.

The only issue I have (other than the fuel pump dieing on me earlier today), is that the ECM does not read a VSS signal.

I have used this VSS with a 1227747, with one wire connected to ground, the other connected to the optical input, it worked fine then. I also had it connected to a 1227730 running S_AUJP for a short while before the owner of that vehicle got the 4ppr VSS, also a painless.

I am using $0D, and have the "VSS not from DRAC" bit selected, since that's what some threads on TGO indicate needs to be done when this PCM is swapped in place of a '7747.

I am using this VSS due to needing the cable drive for the trucks original speedo.

Now the only thing I haven't tried yet, that came to me after coming home and leaving the truck on the hoist until I get a new pump in the morning, is adding a pull up resistor.

Has anyone used this combination before? Any insight?