My 2000 Cav LD9 automatic died while I was driving, I was lucky enough to have a tech 2 in the car at the time, DTC P0336,(Crank sensor perfomance) was set. I had the car towed to my house and replaced the crank sensor. The problem now is that the Crank sensor variation relearn requires the car to start, but it wont start (it cranks but wont start) and there are no other codes. I've checked the fuses for the PCM/BCM, all are good. Fuel pump works and the fuel lines are clean/ free of blockage. The only thing I can think to do is reprogram the PCM/ ICM. Any help would be great, I really need to get to work tomorrow. Thanks

Are you sure the pump is okay? Just cause you can hear it doesn't mean it has enough pressure.

Also you could try a theft relearn.

This is a stupid question, but are you sure you plugged in the new crank sensor?