Thanks Rolly..No Picos on cpu and they're good on DSP...I,ve pulled cpu out of car #2 and put it in car#3.... didn't run car but checked for comm and ims acknowledged #2...but not #3..so I believe cpu is good... I put it back in#2 but green light flashes at 3sec intervals instead of 1sec....DSP flashes @ 1sec which is good...very perplexing