Batteries NOT charging while towing
Did a search and saw some good info about batteries charging/not charging while towing...but here's a situation some may not know about - I didn't, and I've towed for nearly 6 yrs with my 2008 2500 D/...
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Not sure if it is true or not but they told me for GM the 12v is a dealer installed option. They "normally" charge $100 for it
