Have an unknown vintage 4L80E , I am assuming though it is a 94-later because there is no reluctor ring on the rear drum for the rear speed sensor on the side of the case , it was installed into a K3500 running a BBC and the '7060 PCM . Because it has the '7060 it needs a signal from the rear speed sensor inputted to B5 and B6 to function properly . There is no signal now as there is no reluctor ring for the sensor to pick up .
Does anyone know a work around to give the PCM the correct signal from what would be the rear speed sensor ? Does the speed sensor on the transfer case feeding the DRAC/VSSB module have the correct signal or is there an output on the DRAC/VSSB that can be used .
I know on the later '7427 PCM's the output speed sensor is omitted as the DRAC/VSSB provides the signal.
I really don't want to remove this trans to install the reluctor wheel nor do I feel like repining to the later PCM.
Any help or advice is appreciated.
Thanks
TOM
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