i had identical systems.
Even though I could get the starter to turn the engine over the engine would not start. Also all the instrument guages did not work and the OBD II gave no error codes.
I tried a new crankcase position sensor - no change.
Next I contacted Ryan at www.SOLOAUTO.com in Florida. I gave him my Vin# and also the mileage from the odometer. (Note even though all the instruments are out the odometer shows the mileage when you turn on the ignition!0 He reprogrammed a new PCM. and shipped it out for a cost of US$250.
The vehicle is up and running.
I went through months of hell without my vehicle and the Chrysler Corporation were no help at all. I was going to buy a new Jeep Wrangler from them but now I KNOW I will not buy another of their vehicles ever again.
I hope you get up and running.
I have a 1996 Grand Cherokee. I went to start the vehicle and it wouldn't start. PMC was changed. I tried the relearn process for the anti-theft but that didn't work. There is no fuel output and no voltage either. Also The instrument panel won't work either. I tried to diagnose it with an OBD II scanner. I keep getting error communicating so I can't get any codes. All the fuses were checked and they are fine. Any thoughts?