Injector harness? If you have a 2001-2004 it's likely. 05 or newer it's less likely because the rerouted the harness. Inspect it closely before forking out the bucks. Many times they are repairable.

Damaged the PCM? Probably not because you don't mention CE lights or codes.

Sure they sent the correct PCM for your van/engine/transmission combo?

May need a shops scan scope to get a picture of what is going on.

 

I have an 05 GC with 3.3 that turns over but won't start. I have replaced coil, crankshaft position sensor, cam position sensor and still not firing at all. It started skipping, the center coil was not firing, replaced coil pack no change, replaced crank sensor then no start, replaced cam sensor still no start, put original crank sensor back in, still no start. Can someone help? I'm thinking either a wiring issue or the PCM, which is likely? Thanks