your pcm was in programming mode. any chance it was a zzp pcm?
As far as I know it was stock. I replaced it with a ZZP 1.0 pcm. Everything works great now. Old pcm got some water and corrosion in it somehow. Bad seal I think.
White 99 GTP-180*,FWI,ZZP Plog,3"DP.ZZP PCM, Magnaflow resinator.
SOLD June 2009 Silver 2000 Z-28 383LSX Stroker, 10.94@122 N/A
2004 Suzuki GSXR-750, lowered, Piped,filters,smoked screen