Does anybody do a mail order tune on my denali? Made some calls nobody has a tcm for the 6l80 they only offer live tunes.

 

try justin @ blackbear performance, i think he can do tuning on the tcm

 

Give Wheatley a call/email. He did one for me that woke my 08 Denali up nicely. You'll need HP Tuners to install his tune, because that's what he uses. He can build a tune for both your ECM and TCM. You'll also need to download your stock tune and send it to him.

 

There are several tuners in the Chicago area that can tune your truck. Check Corvetteforum.com and do a search for tuners. You will find a number of hits for Chicago. I had mine done by a guy in Springfield and he did a really good job. Good luck!