In reply to sam1971:
Sam,
We used two guidebooks:
Handbook of Ski Mountaineering in the Andes Chile - Argentina - Frederic Lena
The Andes - A Guide for Climbers - John Biggar
That and looking at maps, google earth etc. Maps were hard to come buy to be honest, although we saw a lot of good maps in Argentina, we couldn't find anyway of buying them, however we used a lot of maps etc on the phone.
There is no avalanche service per se however some useful tools can be found here to help with your decision making:
https://backcountryaccess.com/winter-weather-tools-for-south-america/