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Username Post: 04 Yukon 4L60E tranny swap HELP        (Topic#359378)
3rdelke 
Poster
Posts: 80
3rdelke
Reg: 12-06-16
01-05-20 06:09 AM - Post#2783723    

Wont move in any gear, what did we screw up?



Edited by 3rdelke on 01-05-20 06:10 AM. Reason for edit: No reason given.

 
3rdelke 
Poster
Posts: 80
3rdelke
Reg: 12-06-16
01-05-20 08:39 AM - Post#2783733    
    In response to 3rdelke

Just checked it for pressure, seems good



 
Shepherd 
Frequent Contributor
Posts: 1910

Loc: Lake George, NY
Reg: 11-11-15
01-05-20 08:45 AM - Post#2783737    
    In response to 3rdelke

Any noises? No low or reverse? Fluid full of course. Linkage set right? If all is good, dead convertor, if you had internal Trans failure, usually you would have reverse or forward. Any work done to this?



 
3rdelke 
Poster
Posts: 80
3rdelke
Reg: 12-06-16
01-05-20 09:10 AM - Post#2783739    
    In response to Shepherd

No, just bought the story that it was good, it did set for a while. If it makes pressure may be a fuse or need refreshed?



 
Shepherd 
Frequent Contributor
Posts: 1910

Loc: Lake George, NY
Reg: 11-11-15
01-05-20 10:40 AM - Post#2783749    
    In response to 3rdelke

Not moving in either direction, is not an electrical problem. Disconnect the main harness from the Trans and see what happens.



 
65_Impala 
Very Senior Member
Posts: 4368

Reg: 12-29-02
01-06-20 10:06 AM - Post#2783815    
    In response to 3rdelke

A 4L60e that is good mechanically will go into a forward gear and reverse. The forward gear depends on what the electronics is doing.





 
Shepherd 
Frequent Contributor
Posts: 1910

Loc: Lake George, NY
Reg: 11-11-15
01-06-20 01:17 PM - Post#2783827    
    In response to 65_Impala

Unless there is a locked up solenoid, 1st is strictly a mechanical engagement.



 
junkman104 
Frequent Contributor
Posts: 1465
junkman104
Age: 60
Loc: Murphy N.C.
Reg: 01-25-14
01-06-20 04:13 PM - Post#2783843    
    In response to Shepherd

Or the shift valve wasn't hooked up correctly when the valve body was installed. Don't ask me how I know that.



 
Shepherd 
Frequent Contributor
Posts: 1910

Loc: Lake George, NY
Reg: 11-11-15
01-06-20 04:33 PM - Post#2783847    
    In response to junkman104

Yikes, that's hard to do, even by accident. Lol



 
junkman104 
Frequent Contributor
Posts: 1465
junkman104
Age: 60
Loc: Murphy N.C.
Reg: 01-25-14
01-06-20 05:07 PM - Post#2783853    
    In response to Shepherd

Yea it was a learning experience that day, Haven't done it since!



 
65_Impala 
Very Senior Member
Posts: 4368

Reg: 12-29-02
01-06-20 06:14 PM - Post#2783857    
    In response to Shepherd

  • Shepherd Said:
Unless there is a locked up solenoid, 1st is strictly a mechanical engagement.




If you unplug the electronics then the transmission will go into 2nd gear when 1st or 2nd is selected and it will go into 3rd gear when 3rd or 4th is selected.

Both shift solenoids need to be energized for the transmission to go into 1st, even when manually selecting 1st gear with the shifter.



 
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