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2005 2500hd crew LS
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Discussion Starter · #1 ·
I have a 2005 2500hd 2wd crew and my alt is squeaking. What amp alternator comes on this truck from the factory? It's been replaced b4 I bought the truck and I just want to go back with what's designed to run on the truck. Any advice?
 

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2005 2500hd crew LS
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43 Posts
Discussion Starter · #2 ·
Sorry the high amp is a 145. So which one should I get
 

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The stock alternator is a 105 amp - I think there was a "plow option" that had a larger 145 amp alternator - which many upgrade to later.

Note that the 145 amp alternator requires the use of a longer serpentine belt.

I believe the amperage is stamped on the body of the alternator.

jeff
 
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