AWD Disabled light

Hey everybody,

Sorry to rehash old stuff - my wife has a 2004 Silhouette VersaTrak - at the worst possible moments (driving in heavy snow), the AWD Disabled light comes on.

I'm very cheap by nature. Searching through threads, I have seen the following suggestions :

1) Make sure tire inflation is same on each tire so it has same rotational speed
2) Wheelspeed sensor gets snow and slush on it - is there any way to improve this situation so that it doesn't kick out at worst possible time
3) Bad elecrical connections in various places - what should I check ?

thanks for any tips -

dave
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