2008 Buick Lucerne CXS Fusible Link Location

I can not find the alternator fuse anywhere I have checked the owner’s manual and both fuse boxes..does anyone know where it is?

The term you need to search for is “fusible link”. This is what the alternator fuse is called. And its location can be anywhere between the battery positive terminal and the alternator. But located along that cable. So it should be easy to find by following the cable from the battery to the alternator. You can check out the wiring diagram below to get an idea of what I am talking about. Now with that being said, after looking up a fusible link for your specific application It looks like a regular fuse. And may be located inside the fuse block.

Charging system wiring diagram 2008 Buick Lucerne CXS 4.6L Engine