The TSB referred to is:
March 19, 2009
Engine Ticking Noise and/or MIL "ON" P0014, P0015, P0024, P0025, P0017, or P0018
There are exceptions to this TSB however, so not every ED350 will qualify.
First off, your VIN has to fall within the specified numbers on the TSB.
Second, it says: "It is mandatory that the VVT-i gear actuator bolts, actuator center section alignment, and actuator body be inspected BEFORE performing this TSIB. If no concerns are noted with these parts, this TSIB does NOT apply."
Also, keep in mind that this isn't a recall, just a TSB.