No, fortunately it'* under the hood. It'* located under the Maxifuse/relay center that is more towards the passenger'* side. If you have difficulty finding it, you can trace the wire loom from the blower motor right to it. This is a solid state electronic part and can fail just the way you describe. Before you replace it though, you should check the voltage on the control wire (gray I think) to make sure it'* 0 volts. This will verify that it is indeed the BCM.
New, there about $70 or more. The one in my 93 is from the junkyard and cost less than $20. It'* still working well. Since it'* so easy to change, I decided that saving the $$ was the thing to do. If the used one fails, I can replace it in about 15-20 minutes with minumal effort.