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  1. #1

    Question gear reduction starter on 98 gmc 5.7 4x4

    i have a 1998 gmc sierra slt with a 5.7 and a gear reduction starter. my problem: the starter kicks out at times, just whines without engaging at times, works fine at other times. i have removed the starter, had it checked on machine at parts store and it says it is all good. i also took it apart, checked the brushes, gears, drive, etc, all seems to be good. flywheel teeth are all near perfect. could it be just a weak solenoid or is this a characteristic of this starter?

  2. #2
    murdog94's Avatar
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    Feb 2008
    Cloquet, Minnesota, United States
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    Weak Solenoid, is my bet... And did you shim it if it needed it?


    1997 Chevy S-10 Blazer 4X4 with 330K miles and counting (Hunting rig).

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  3. #3
    Master Mechanic Big75's Avatar
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    Nov 2009
    Seward, Nebraska, United States
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    Sounds like the jackshaft (middle spinny thing) is sticking maybe due to a weak solenoid or wear. If this was a "normal thing" on these starters, I don't think they'd still be selling them.
    This post has been rated MA LSV, and is intended for mature audiences. Reader discretion is advised. :fighting0037:
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