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Gears Won't Change

(1990 Chevrolet 1500 Pickup)
in Gatesville, TX on February 03, 2010
After taking off on drive, I drive to 20 to 30 MPH and the transmission won't change. It will get stuck and will not pass 30 mph. The trans fluid is good.
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Popular Answer
on February 03, 2010
If the fluid is good, then you could have a vacuum modulator or throttle valve issue. If you don't know how to check these items, get a good repair manual ( or take it to a transmission shop (
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on October 18, 2010
2 Shift selenoids in the pan. cheap and easy fix you can do yourself. might as well change the filter while your at it. I had the same problem.
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