Recently had my 4L60E rebuilt, still slips shifting from 2-3.

[996]

Hi All,

 

As the title states my 4L60E is still slipping when shifting from 2-3 after a rebuild.

 

Some background:

 

I have an '04 GMC Yukon Denali AWD. My tranny started slipping from 2-3 maybe about 10K miles ago (I currently have 146K). I took it to my mechanic who took it to a transmission expert. The guy rebuilt my transmission only to have the problem still exist.

 

My mechanic said this was a computer issue, and he is going to reprogram it with his computer and make sure it is done correctly since the tranny is electronically controlled.

 

Is this a common problem? Has anyone experienced anything similar to this? Does something need to be done after the physical rebuild to "re-program" the computer for the transmission?

 

What other factors could still be causing the 2-3 slipping? Something about purging clutches with software after a rebuild possibly?

 

Thank you all in advance.

Best,

996

[txab]

Take it back to the builder

[BlackZ71Silverado]

^^^^^^^

What he said.

 

The job was not done properly and whoever did the rebuild needs to get the job done.

 

 

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