We aren't sure yet if the Navi is the cause, but this is the only way to know for sure I guess. The battery had not gone dead when the dealer has had it and 2 times they have had it more than a week to monitor. They said the vehicle electronics shut down in normal amount of time and then held a normal steady draw of 26mA. So something has to be coming to Life at some point and draining the battery they just haven't caught it. The only 2 variables left are that this started after the Navi was installed (about 3 weeks) and at the same time I quit driving the vehicle daily and only on weekends. I assume if I drove it everyday the battery draining issue would be masked. One thing the Hummer dealer did notice is that the "chime" interface would chime if you moved it around alot even with the vehicle switched off. But it never chimes out of character when I drive it...Hopefully we'll get to the bottom of this within the next month or so.....
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