GM Drivetrain & Suspension Chassis | Transmission| Driveshaft | Gears/Rear End/Differential | Traction Aids

troubleshooting 4l80e, reverse, no forward

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Old Oct 5, 2012 | 07:40 AM
  #11  
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I assumed dual feeding it was part of the trans-go install procedure? Otherwise do you have any more info or a link on how to do this? Also are you saying drill apart the three layer plate and use only one of the layers?

If I am having this guy do something I need to be specific about what gets done otherwise...well, you know...
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Old Oct 18, 2012 | 10:15 AM
  #12  
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Sprag turned out to not be the problem, it snapped the shaft that is most likely the one the sprag drives so you guys were pretty close. 1" diamater shaft 8-10 inches long with splines on each end. Clean break right behind the splines and no shards made for a cheap easy repair. It is back in the truck now and a bonus is that having to buy a new driveshaft I cured my 70 mph vibration that was bugging me.
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Old Oct 18, 2012 | 10:38 AM
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Sweet.. glad it was something simple!
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Old Oct 19, 2012 | 03:27 AM
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i have the same problem with my 4l60e i had put a shift kit couple months ago was driven @ 40 mph went over some train tracks then motor started reving up ,wont go forward but goes in to reverse what parts did you buy . did u had to buy all the gaskets rebuilt kit and what the part u change out called ?
thanks
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Old Oct 19, 2012 | 09:11 AM
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His parts wont fix your 60e sir... Does yours pull in manual 1?
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Old Oct 19, 2012 | 12:01 PM
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ah ok i thought it would been similar ,no it dont do nothing it only goes into reverse
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Old Sep 2, 2019 | 06:08 PM
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Default 4l80e problems

Having problems with my 4l80e. It will go in to first second and reverse but won't go into any other gear unless you shift it manually goes into all gears if you shift it manually. Hoping somebody could give me some advice.
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