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Originally Posted by Boar-Ral
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.
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This only happend once as of the post date when it was about 10-15*F outside. It hasn't happened again since. So who knows..maybe just a boot up thing do to the cold weather.
