Burb66 Posted January 17, 2020 Report Share Posted January 17, 2020 Hello all, 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 tune 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. Quote Link to comment Share on other sites More sharing options...
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