I can only provide indirect info, but ...

95 F-body FSM shows if injector voltage is in error (e.g., unplugged injector) for more than 4 sec, that injector driver is disabled for some unspecified period of time.
96 B-body FSM shows the above but the driver is disabled for the ignition cycle; plus has a check for intermittent voltage error (less than 0.5 sec) which apparently allows continued driver operation.

Perhaps someone has more direct info for your platforms, but in the meantime I hope this helps.

Jim