soundz like this system is not as stable as gm thought.
i had a problem 3 times before, too. the remote (none of them even w/ battery replaced and stuff) was recognized by the system - so i couldnt start the car (or remote lock/open).
from next day the r/c worked fine. but it appeared again, so i decided to wait 24h doing nothing to see it i can reproduce this. - it worked next day.
you may think the problem came for a third time.. and yes, even 4 times i had to wait for 24h to drive my ho. im not quite sure what the problem is. in 359 days of th year the remote worx fine, even in up to 300 meters distance.
ho is female so i think its ok to be picky sometimes and so i didn't care to much bout it till now
anyone an idea?