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

4L80 Problem

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Old Mar 7, 2008 | 03:30 PM
  #11  
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Damn, when I first opened this thread I was like, that asshat went to the track without me! Then I looked at the date of the original post, lol, sorry buddy!

Yeah, when I get home I will post the logs up for you. His trans was going 1-2-1-2-1-2-1-2 ?? We logged the basics for a couple of runs. I'll be home around 5 to post up.
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Old Mar 7, 2008 | 04:30 PM
  #12  
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Originally Posted by trever1t
Damn, when I first opened this thread I was like, that asshat went to the track without me! Then I looked at the date of the original post, lol, sorry buddy!

Yeah, when I get home I will post the logs up for you. His trans was going 1-2-1-2-1-2-1-2 ?? We logged the basics for a couple of runs. I'll be home around 5 to post up.

Cool, thanks Bill!

Trying to get this fixed before I go back to the track. Hoping it is a solenoid or shift kit issue.
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Old Mar 7, 2008 | 07:30 PM
  #13  
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Ok here we go. These are 2 runs from Phoenix.
Attached Files
File Type: hpl
Jason1.hpl (19.9 KB, 101 views)
File Type: hpl
Jason2.hpl (49.5 KB, 100 views)
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Old Mar 8, 2008 | 09:27 AM
  #14  
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Anybody???
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Old Mar 8, 2008 | 10:55 AM
  #15  
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Jason, DL those to your hard drive and then start a new post in the tuning section. Might get a better response.
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Old Mar 8, 2008 | 11:17 AM
  #16  
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I think that you have to make some physical changes to the internals of the trans if you want it to have it manually hold a gear when commanded by the shift linkage. My Transgo HD2 shift kit came with Gear Command Pack that I did not install because they said not to put it in a street truck (work truck). I take it from that it will not hold a manual gear unless the Pack is installed.

On the front of the instructions it says:

Burnouts:

In water or bleach box: Break it loose in 1st/2nd, then upshift to 3rd.

Not sure if that is much help or not but Good Luck.
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