I had not thought of that. I will check into the schematics and see if it is still the same 4K pulses coming out of the PCM. Thanks for the input.
I checked on the GM SI and this is what it said:
The instrument panel cluster (IPC) displays the vehicle speed on the analog speedometer based on the vehicle speed signal from the powertrain control module (PCM). The PCM converts the data from the vehicle speed sensor to a 4,000 pulses/mile signal. The IPC uses the vehicle speed signal circuit from the PCM in order to calculate the vehicle speed.
The speedometer defaults to 0 km/h (0 mph) if a malfunction in the vehicle speed signal circuit exists.
so it looks like that will work. Thanks.