Won't start, can't pull codes, TOD check light

[Thelgord]

1) CKP, Crank shaft poisition sensor. Use by the PCM to monitor engine speed. If faulty, the engine won't start, but should still throw a trouble code.

2) 15A Iginition Fuse and the 30A PCM fuse. If the PCM fuse is blown the PCM will not power on, the engine will crank but not run, and you will get no error codes.

3) Check PCM connections and ground connections for the PCM. (Could cause the same symptoms as #2)

[ColoradoVX]

1) CKP, Crank shaft poisition sensor. Use by the PCM to monitor engine speed. If faulty, the engine won't start, but should still throw a trouble code.

2) 15A Iginition Fuse and the 30A PCM fuse. If the PCM fuse is blown the PCM will not power on, the engine will crank but not run, and you will get no error codes.

3) Check PCM connections and ground connections for the PCM. (Could cause the same symptoms as #2)

Thanks. CKP was my first thought. That's where I'll head after checking the fuses you mention. Of course, it's a bear to get to... do I need to drop the starter to reach it? So weird that a) it happened while cruising along and b) it won't connect to scanner... have never seen that before.