Have a 95 sunfire with 2.2. cuts out. The speedo and tac go to "0" when it does this. But the radio and lights keep working. The ECU will not comunacte with the unit used to pull codes. Think it might be a ECU ground, but don't know where the ground wireis conected, orwould a bad ECU do this. Any Ideas.

This is out of my hands. Your gonna have to take it to a shop and have them look at it.