Quote:
Originally Posted by Viet Nam Vette
Anyone else have any cold weather problems with the NAV.??
I think these units don't dig the cold at all. I know CD drive mecks don't do well in cold weather.
What's your experience with this topic.?? 
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My Hummer spends all of its time outside and I have used the navigation system as cold as -55C (-70F) and it works flawlessly. The display is very sluggish, but never garbled and everything still works. If the problem continues, I would speak to your dealership.