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

    Sep 18, 2012, 11:59 AM
    1998 gmc envoy v6 4.3L
    Battery is good but no power at all to truck what could possibly be the problem.
    TxGreaseMonkey's Avatar
    TxGreaseMonkey Posts: 16,761, Reputation: 5597
    Uber Member
    		  
    #2

    Sep 18, 2012, 12:34 PM
    . Test all under hood and under dash fuses with a test light or multimeter.

    . Remove and fully charge the battery, which most auto parts stores will do for free. They will also test batteries for free. Clean battery terminals and cable connections. Examine cables for hidden corrosion and breaks. My bet is that the battery is bad.
    RickMN's Avatar
    RickMN Posts: 244, Reputation: 52
    Full Member
    		  
    #3

    Sep 18, 2012, 01:43 PM
    Check the 175-amp mega fuse under the hood. Everything flows through that except starter. But starter won't engage if there's no power to ign switch.
    CaptainRich's Avatar
    CaptainRich Posts: 4,492, Reputation: 537
    Cars & Trucks Expert
    		  
    #4

    Sep 18, 2012, 08:29 PM
    Were there any recent repairs or events that could have damaged the electrical system?
    Battery replacement or jump starting can sometimes cause fuses to become open and result in total vehicle power failure.
    What other symptoms are you getting?
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