I've put a 408 in a 99 sierra with the orginal 4L60 but i also used a 2002 3500 2wd 6.0 computer . So now i need to switch the trans setting to the 4l60's. How would i do that with HP tuners ? I saved the orginal comp. settings.

 

You need a segment swap contact hptuners

 

bill@hptuners.com


He'll get the segment swap done pretty fast for you.

 

It wont effect my engine tune?

 

Nope only the transmission side of it.