I have an '03 Hoe, may not be the same issue/solution, but thought it might help with your intermittent problem.
Same issue, DIC would not diplay intermittently. Also have tach/spedo, cluster lights, etc. work or not work. If off, came on when while driving. Was ready to spend money and replace the whole cluster.
Turned out to be an issue with the contact on the harness - known issue that the point of contact corrodes. Depending on how bad it is it can be cleaned up and re-seated. Or the harness may need to be replaced (yuck!).
Might be worth pulling the bezel, pulling the cluster, and checking if you can isolate or rule out the harness.
Same issue, DIC would not diplay intermittently. Also have tach/spedo, cluster lights, etc. work or not work. If off, came on when while driving. Was ready to spend money and replace the whole cluster.
Turned out to be an issue with the contact on the harness - known issue that the point of contact corrodes. Depending on how bad it is it can be cleaned up and re-seated. Or the harness may need to be replaced (yuck!).
Might be worth pulling the bezel, pulling the cluster, and checking if you can isolate or rule out the harness.