I have never seen a SA like that in any datalogs and I was datalogging the day before the icm went out. The only thing I notice is it gets harder for the motor to crank over or should say it's like the battery being low and cranking slowly but the battery is fine. Once I replaced the icm it cranked over normally. The icm is very weird piece, I have had it just take out the timing advance and the truck would still run 2x, I have also had it just die where there is no fuel or spark 3x and I have also had it take out the entire distributor.