I attempted to just straight off read the ECU and it said error $0281 something about no data received.
1. Do I need to do the relink VATS thing 10 mins on, 20 seconds off, 3 times first? Or is this PCM dead too?
2. The ECU is also a 2001 instead of 2002 like before, do I lose any tuneability, for the lower year?
3. And what is the best way to convert the tune I have from 2002 to 2001 OS?