i have a 2004 trailblazer ls. while driving home on friday i suddenly had no gea on 2004 Chevrolet Trailblazer

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is there a reset switch or some fuse that needs reset or is my tranny goning out
(1) Answer
You didnt say if your vehicle will engage reverse or park for that matter. Maybe the shifter mechanism is out of adjustment. Have you tried putting the gear selector in other gears? Have you checked the transmission fluid level?