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    fisher324's Avatar
    fisher324 Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Jan 30, 2010, 05:47 AM
    Silverado won't start batteries good
    I have an'06 Silverado 2500 diesel that starts some times but not others. A boost will work if left connected for 5 minutes or so. It seems to happen more so in the cold weather (8 F right now). Had the batteries tested after a boost and a 1/2 drive to the service center, and they read good.

    My real wonder is why it happens after a clean start and then a couple of short stops doing errands, and then all of a sudden, no start? A mechanic friend suggested a short, so I disconnected my brake controller which was the only after market addition to the truck, electrically. Seemed to be fine until this recent cold snap.

    Alternator?? Any help is greatly appreciated
    TxGreaseMonkey's Avatar
    TxGreaseMonkey Posts: 16,761, Reputation: 5597
    Uber Member
    		  
    #2

    Jan 30, 2010, 06:34 AM

    . Remove and fully charge the batteries. Add distilled water, if necessary.

    . Clean battery terminals, cable connections, and inspect ground.

    . These links should help:

    https://www.askmehelpdesk.com/cars-t...ml#post1973613

    https://www.askmehelpdesk.com/cars-t...ml#post1415281

    . Use full-synthetic HDDO.
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