wondering about checking or replacing my PCM from my 2002 3500 van w/5.9l. I believe my PCM is not working -getting a no start/no run - cut off when I was driving & has not started since them (was working fine before this happened) I have replaced: cam position senor, crank position sensor, ignition coil, & ASD relay I checked ALL fuses (in power dist. center & in fuse block inside vehicle) , fuel pump is working & there is power going to the coil, cam sensor, & crank sensor but no spark. Is there a way to check to see if the PCM is bad? only check engine code is p1492-not sure what that is Also if the PCM is bad are the PCMs interchangeable from yr to yr (ex 2003 w/5.2l or another yr w/5.2l or 5.9l) & if so what needs to be done to make it work on my vehicle? I was told that you need have have the VIN & mileage for it to work correctly. I have only had the van for about 1 month & there is a sticker on the PCM that is was changed/and or reprogrammed 20k miles/ 3 yrs ago Thanks in advance for any & all help!