Hey I have a 2008 gmc sierra vortecmax with a 4l70e. The 4l70e did not hold up. I have a built 4l60e from a 1998 gmc sierra I'd be looking to swap. What is needed to be done to actually make it work.

 

A 4L70E is a built 4L60E. What happened to the 70E?

I believe the 08s had an ISS (speed sensor) in the trans, so a direct swap isn't an option. I think you can tune around it, but some other guys with more experience will have to comment on that.

 

70e couldn't handle a built 6.0l

 

your saying even if I tuned it it will not work. I know it bolts up no problem

 

done. Truck works great shifts ******* hard just how I Remember that trans. Bolted up and all. Had to computer tune solo it could find 3 and 4th but just wetn 232 in her thanks all

 

Jay, I thought you could tune it out?

 

needed to get a new trans in. A couple days later and it works ******* amazing. Having fuel issues now. But I smell fuel and truck has lately been getting sluggish and found fuel pump not doing it' prime soo.ill put one in.

 

What's the torque spec for my oil drain plug so I can tell Speedy Lube when I take it in?