Both remotes to the keyless entry suddenly stopped working. Is it the BCM? on 2000 Chrysler LHS

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I replaced the batteries in one remote and tried the reprogramming procedure to no avail. The trunk release and panic button do not work either. The locks and trunk work by the power switches inside. Is there a reciever or a RF oscillator that can be replaced without replacing the expensive Body Control Module? Is there an option other than the dealer for replacing the BCM.
(2) Answers
How many remotes did you have? if more than one , did the other one operate bofore you tried the 'reprogramming' for the other?
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