Gmc Sierra's come from the factory with the charging circuit intact except for the 40A maxifuse which is missing. There will be a red dummy plug in it's place in the fusebox under the hood. Easily, owner installable.
As a general rule. The TM dealer should have no problem installing the controller and making sure it works properly with a TM.
Tim
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Previous owners of a great 2010 [SIGPIC][/SIGPIC] TM2720SL.
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