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Old 08-10-2007, 11:32 AM   #17
snfexpress
Montana Master
 
Join Date: Jan 2006
Location: South
Posts: 2,499
M.O.C. #5140
In our 2007 GMC (and 2006, as well), yes the fuse needs to be installed. However, your main starting battery will not drain as there is a drain-down protection circuit.
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