Hey there,
I recently did a 4L80e swap in my 2002 Sierra Denali and everything is almost buttoned up except tuning it. I was under the impression until recently that you could use a regular obd cord to connect with hp tuners but have had no such luck. If I?m not mistaken you need the hardware and I won?t use it enough to justify purchasing one. if I am mistaken please help me out but if not I will gladly pay someone to come segment swap my pcm to a 4L80e. I am located in Arvada, Colorado and my rig is pretty stationary at the moment but if need be I can arrange to trailer it.