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I have a 09 silverado duramax and trying to figure out why I have 2 alternators in it. I bought it new. It is a LT version. Any info would be great, thanks
 

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they help when you have a lot of electrical things running off the truck like a trailer with a lot of lights, laptop, printer, etc...
 

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Oh...... Squirrel!
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some thoughts on this.....product improvement? lots to run on cold mornings cab heater air intake heater glow plugs rear window defrost etc
 

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Not to sound like an a$$ but you do have dual batteries which dual alternators will help keep both charged for whatever you put on them.
Haha... This is a great answer


Sent from my Autoguide iPhone app...
 

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Im Superrrrr!
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thats like asking why not twins....big breasted beautiful blonde twins....

Where am I....I think I blacked out.
 
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