Had a Vette with the same symptoms. Acted like it was demon possessed. Was the battery terminals. The slightest drop/variation in current can cause your computer(s) to misfire and strange ghostly things to start happening.
I live out in the boonies so if it is close to half way mark I fill up. Do not want to get caught with low/empty tank if something happens.
A few years ago some idiot drove his truck into the only bridge into town.
Everybody had to go the long way around for several weeks before it was fixed.
Baloney. I have Michelin LTX M/S2's on my Denali and they are great tires.
If they were all cracking and falling apart they wouldn't be so highly rated on Tirerack and other sites....and Michelin would be out of business.
I bought my 2010 Denali new when I lived in Southern California. Figured the resale value with AWD would be better but doubted I would need it.
Then I got caught in the snow/ice in Yosemite - pulled right out when others were slipping and sliding around; went down a dirt road in Northern...
2 or 3 years ago I asked the GMC dealer what would be the cost for setting up the second battery.
Labor, wiring, and battery were something like $900+.
Not a simple deal if done properly.
+1 for the Denali. In Oct moved from SoCal to Oregon just in time for record breaking lows and snow. AWD, heated seats and steering wheel, and the rest of the toys all got a good workout.
You should do a search on here about how lousy the GM Nav is. There's plenty of rants including one of mine over in General Discussion. I would go for a replacement that has Garmin Nav. Anything but GM - it will get you lost. Maybe the new ones are better but I have a 2010 and now use my Garmin...
Yes, but was hoping to avoid taking it into the dealer again....
Tried to take it in a couple of weeks ago and of course: (a) it was working perfectly, and (b) the radio guy wasn't in that day anyway.
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