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05 buick Rainier, has been giving us issues for a couple weeks now. Had it thrown on the computer today. Fuse box was corroded, they cleaned it and had hoped it fixed it. Not so much, now they said we need a whole new fuse box, is this a hard fix? Only a dealer can do?
 

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It depends on whether your box has electrical connectors on it or if its permanently hardwired. Most boxes today are replaceable by unplugging the connectors on the bottom and/or unscrewing the terminal posts on the box and replacement with a new box. Based on what I see on Ebay it should be easy to replace if you have mechanical abilities but please disconnect the battery first. Do not buy a used box.
 
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