gear reduction starter on 98 gmc 5.7 4x4

Discussion in 'General Chevy & GM Tech Questions' started by five.fold, Aug 18, 2010.

  1. five.fold

    five.fold New Member

    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. murdog94

    murdog94 Epic Member 5+ Years 5000 Posts

    Weak Solenoid, is my bet... And did you shim it if it needed it?
     
  3. Big75

    Big75 Rockstar 4 Years 500 Posts

    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.
     

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