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  1. #1

    Default alternator not charging

    my battery has had a problem mantaining charge dash guage is lit displaying battery warning but sometimes it goes off and battery charges normally . now it will not charge at all do ineed to replace alternator. have replace3d serpentine belt , tensioner and battery is fai. what size alternator doe it requirerly new this on 2000 gmc sierra 5.3

  2. #2
    Master Mechanic Big75's Avatar
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    bring it in to O'reilleys and have it tested.
    This post has been rated MA LSV, and is intended for mature audiences. Reader discretion is advised. :fighting0037:
    ghst-_-R3CON83 ----------BATTLEFIELD BAD COMPANY 2----------------------

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  3. #3
    Legend

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    Any parts store should be able to check the alternator and the battery. Sears will check the whole system for 12 bucks without even taking anything out of the vehicle
    99 K1500 Suburban LT "THE BEAST"
    Hypertech III, K&N, true dual
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