Code problem

1993 CHEVROLET TRUCK
126,000 MILES • 7.4L • V8 • 4WD • AUTOMATIC
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TIM2290
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  • 4 POSTS
My transmission is shifting hard into 2nd and it won't go into overdrive. I read the codes using the paperclip method and got codes 68, 85, 86, and 87. I've tried looking them up online but I keep getting mixed responses. Please help, any real information would be greatly appreciated.
Thanks!
Dec 14, 2019 at 8:05 PM
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