LUMINATOR Posted April 13, 2013 Report Share Posted April 13, 2013 My 1990 Chevy Lumina base model is shifting hard into overdrive hard. All of the other gears shift just fine. Any ideas of what the problem could be? Would it really be worth the time to change the fluid and filter? Because I've herd if you change the fluid with new stuff your taking a risk of wreaking the transmission. Do you just poor the old stuff back in and refill for what you lost, during the removal of the pan? The car only has 102,000 on it. Quote Link to comment Share on other sites More sharing options...
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