2015 Yukon Denali XL tuning?

[JIMS SVT]

We recently purchased a 2015 Yukon Denali Xl. Shortly after bring it home we noticed the trans has a laggy/paused 1-2 shift. The dealer performed the updated fluid but the issue is still there. They claim it is operating normal. But there’s no way it it norma. Is there any custom tuning available to make this issue go away? Also would like to do the afm delete. Thanks for any help

Jimmy

 

[G00se]

Jim - mine had the same issue. I ordered a Blackbear tune take care of this issue and increase performance, which it did well. There's also Diablo, Hypertech and probably others besides Blackbear that could help alleviate your issue. And the extra power adds a bit more fun.

 

[JIMS SVT]

Jim - mine had the same issue. I ordered a Blackbear tune take care of this issue and increase performance, which it did well. There's also Diablo, Hypertech and probably others besides Blackbear that could help alleviate your issue. And the extra power adds a bit more fun.

Thanks for the reply. I was hoping that someone else had this issue and was able to resolve it with a tune.

 

[Ace Boogie]

I have a Black Bear EFILive AutoCal Tuning System im selling. Used once to tune my 2010 Tahoe but recently sold truck. Selling for $199 w/ Free Priority shipping. Let me know.

 

[JIMS SVT]

Anyone else?

 

[chris brindley]

Anyone else?

I did the diablo tune it comes with various shift pressures, this might help. I took my car to dealer the other day and removed the tune before going in and it was horrible to drive. Low power slow response and sloppy shifting.

 

[extremetint]

http://www.hypertech-inc.com/MaxEnergy2.aspx

 

[JIMS SVT]

http://www.hypertech-inc.com/MaxEnergy2.aspx

Do you use this one?

 

[extremetint]

Yes that is the one