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transmission tranny

  1. 03 trailblazer no over drive HELP!!!

    Transmission Mods
    Het guys im new to this site . I have 03 trailblazer and the tranny did work fine yesterday...little slip.Now it goes throw all the gears but wont go past 3rd.( goes into 3rd fine but wont go in to 4th) Down shifts fine Reverse is fine. Has fluid in it looks good. Wondering if this could be a...
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