Grand Cherokee 2001, 4.7 ltr, my PCM is on the passenger side of the engine,
some times as you pull away slowly from stop, lights etc the fuse that feeds the PCB in the skinny fuse box on the left in engine bay blows 20 amp, put new fuse in, start up drive away !!
This only happens occasionally, but once it does it will happen 3,4,5 more times on that trip, next day etc no problem at all, and it never happens when driving, only when pulling away, got a feeling might be fuel pump.
Barry
afterthought ! , the car has been converted to LPG, so the petrol pump isn't used ??