What does it take? 2003 Silverado 2WD.

Thanks guys. Jason

 

You have to add a speed sensor pig tail and wire it to the computer, Relocate the tranny cross member. Switch some pins on the VCM and change ur file either segment swap or a file from like 2003HD truck equiped with an 80. Oh and your tranny cooler lines will have to be extended. There is a nice write up on lstrucks

 

Have a link by chance?

Thanks man

 

http://www.ls1truck.com/forums/front...rans-swap.html

 

Great link. Thanks for sharing! So it appears everything is plug and play and won't need a computer reprogram as long as the conversion harness is used. Modding the crossmember appears easy, just a little time consuming.

Jason

 

You have to reprogram the PCM for the 4l80e, that could be done using EFIlive or Hptuners.

 

i just got done doing the swap in a 4x4, im just waiting on my tune. patc makes a wiring kit thats very easy its 230 bucks, you need to cut your crossmember and weld it so it fits in place. your going to need a new driveshaft with the correct splines and length, a comoputer tunes is definatly needed otherwise it wont shift out of 3rd. you need a new shift linkage bracket, torque converter, dipstick, dustcover, and thats about it.

 

I just used a file from an HD truck. It's definitly required for it to work correctly.

 

the wiring was very easy and can be done by you, eficonnections dot com can get you what you need for under fifty bucks shipped. there is this write up here https://www.performancetrucks.net/fo...d.php?t=413157 that solves all you questions.