Quote Originally Posted by industrialfish View Post
Alright, update. Last night after work I checked the body ground coming off the battery and it looked fine but I couldn't get my arm in there to take the bolt off so it may need cleaning. What other grounds are there? Unplugged and replugged in the PCM, and any connectors I could find under the hood, but there was NO change.

Get in the car this afternoon to go to work and still the same issue. Give the DIC a gentle love tap and boom, it comes on, and the ABS/PARK lights go off. DIC only was reporting temp/compass, no tripometer,oil life,boost etc. Dash speedo started working too but no other gauges on the dash.

Leave work tonight and the only thing not working is the TCS, everything else works, all gauges functional including Aeroforce... While it IS sounding like I have a wheel bearing going bad, wouldn't that usually trip the ABS too? Could a short in the speed sensor cause other electrical gremlins like this?

Jeff, where would those wires be, the OBDII port? I do have an oscilloscope. Given the Aeroforce would only blink, it was seeing power but no signal on the OBDII port.
They are located at the alternator. That will tell you if the signal from the PCM is working or not. Also there is a large ground in the engine block and one on the intake side close to the transmission.

Jeff