I do not have a cable coming off the transmission going to the speedometer nor can we find a DRAC. However one of my mechanic friends even gave me one for possible use. It is definitely not under the glovebox or anywhere under the dash. That's why we're so befuddled.
I have a 1988 Chevrolet C1500 Silverado. It calls for a speed sensor buffer. We, my mechanic and myself cannot find it. On later models it is located under the glove box. not so on this model. Where is it?