Trans lost 3&4

[purplehavoc]

Hey guys,

Buddy has an 05 Yukon with what I believe to be the 4l60E, that has lost
3rd and 4th gear. 1,2 and reverse are fine, fluid is still bright red and no burnt smell. Was driving when it happened, so he just continued home in second gear.
Any thoughts or ideas ? Going to bring a scanner home from work this week and find out what codes it might have thrown.

Thanks for any info you can help me with.

 

[electro]

mine did that.

Pretty sure, its remove and replace.

thats what all my research led too.

I got a reman 4l60E from the dealer for 1500tax in canadian $.