I had my Hawkeye plugged in scanning the SLABS and decided to scan the transmission ECU. I got this code: P1884 (20) CAN message: Road speed invalid. The code wouldn't clear. Transmission seems to be working fine and there are no other codes. I checked around and can't find a cause or remedy for this code. Any ideas? Where does the tranny ECU get a road speed signal From? The SLABS?
Thanks