I've got a cavalier with alero 3400 99 into it, I don't have any spark advance, the timing always stays at 0 on the scanner, the car always run on the by-pass mode. We got the 5 volts (tan and black) to the igntion module who his supposed to transfert the control of timing to the PCM (over 400 rpm) instead of the ESC. We try an other ignition module, also have new coils. We check if it will be wiring trouble, but everything seems to be ok.

Do someone have any ideas, can it be the 24x crank sensors? Any suggestions will be appreciate.

(Sorry for my english, i'm a french guys from Québec).

Problem solve this morning, purple wire to the ignition module was cut.