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Tuner for 6.2L 8 speed 2015 GMC Sierra Denali

White_Denali

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White_Denali Enthusiast

White_Denali

Posted
Posted

Need help getting a tuner for my truck from either bully dog or diablo but I am not sure if one will work on the new trucks anyone know or can help?

 

also where does everyone mount their tuners on their 2014+ GM trucks

SMiller Senior Enthusiast

SMiller

Posted
Posted

I am sure no one has a tuner out yet, I would be contacting black bear and other efi tuners.

 

Might see who is doing Corvette tunes as they have had the drive train a lot longer.

 

The torque management was a joke on the 8-speed I drove the other day, ecm pulled all power on shifts, fell flat on its face, with as quick as the 8-speed can shift it should simply blip the throttle as it rips a shift, with GREAT tuning I think great things can happen.

 

Letting a tuner program the new trans scares me.

RyanbabZ71 Senior Enthusiast

RyanbabZ71

Posted
Posted

Go with the autocal and blackbearperformance.com

 

 

Ryan

White_Denali Enthusiast

White_Denali

Posted
  • Author
Posted

 

I am sure no one has a tuner out yet, I would be contacting black bear and other efi tuners.

Might see who is doing Corvette tunes as they have had the drive train a lot longer.

The torque management was a joke on the 8-speed I drove the other day, ecm pulled all power on shifts, fell flat on its face, with as quick as the 8-speed can shift it should simply blip the throttle as it rips a shift, with GREAT tuning I think great things can happen.

Letting a tuner program the new trans scares me.

 

 

Go with the autocal and blackbearperformance.com


Ryan

 

 

 

Im hoping bully dog has something.. the trucks fast enough as is i just wanna lift the sped limiter cause going 98 only just kills me

Horacio Enthusiast

Horacio

Posted
Posted

Subscribed.

Way back when I had my 2003 Avalanche, I was passing a long line of slow cars when I hit 103. It's the worst feeling to have no more power and have it cut out in that situation.

TJay74 Senior Enthusiast

TJay74

Posted
Posted

I would be surprised if anyone has the ability yet, while the Vette came out first with the 8sp those cars have only been on the lots for maybe a month or so now. Usually once HP Tuners or EFI live breaks the code then everyone else will be able to access the code as well.

  • 1 year later...
midwestdave33 Enthusiast

midwestdave33

Posted
Posted

I'm in the market for a bully dog on my 2014 to firm up my shifts and raise speed limiter ONLY. My 6.2L has plenty of power and if I want more I plan on adding a supercharger but the way my 6spd shifts is like a grandma between gears. with my handicap conversion i'm unable to access manual mode or tow/haul mode because they remove the shifter stalk to do the conversion. I shift with a touchscreen.

 

anyone have experience with a bully dog on a '14?

bboyce536 Enthusiast

bboyce536

Posted
Posted

If all you want is the abilty to remove the speed limiter then most tuners are able to do that. Mine is Diablo tuned and while I hardly notice any difference over stock, I am able to go over 98. I hit 121 in the UP last week and it was still pulling very hard.

midwestdave33 Enthusiast

midwestdave33

Posted
Posted

If all you want is the abilty to remove the speed limiter then most tuners are able to do that. Mine is Diablo tuned and while I hardly notice any difference over stock, I am able to go over 98. I hit 121 in the UP last week and it was still pulling very hard.

actually shift quickness/firmness is my main concern. rarely do I get the change to top end my truck but those granny sloppy shifts bug me

bboyce536 Enthusiast

bboyce536

Posted
Posted

actually shift quickness/firmness is my main concern. rarely do I get the change to top end my truck but those granny sloppy shifts bug me

Your truck is a 6 speed. Most tuners can tune that trans. I was responding to the OP as we have 15s with the 8 speed.

SMiller Senior Enthusiast

SMiller

Posted
Posted

If all you want is the abilty to remove the speed limiter then most tuners are able to do that. Mine is Diablo tuned and while I hardly notice any difference over stock, I am able to go over 98. I hit 121 in the UP last week and it was still pulling very hard.

You will wish you didn't do that when the driveshaft exits the truck. I am all for going fast but the driveshafts in these trucks are known for flying out, good way to get killed. YouTube is your friend if you don't believe me. Not busting your balls for speeding at all, I love to rip, I just know the limits of the driveshaft on these trucks and you don't want to have the rear end of the truck catapult 6ft in the air when doing 120mph, it will kill you

bboyce536 Enthusiast

bboyce536

Posted
Posted

You will wish you didn't do that when the driveshaft exits the truck. I am all for going fast but the driveshafts in these trucks are known for flying out, good way to get killed. YouTube is your friend if you don't believe me. Not busting your balls for speeding at all, I love to rip, I just know the limits of the driveshaft on these trucks and you don't want to have the rear end of the truck catapult 6ft in the air when doing 120mph, it will kill you

Youtube is your friend...i have seen videos of many many gm trucks doing well over 130+ for extended periods of time. I have been over my 98 speed limiter twice, ever. Once to make sure it was turned off, hit 104 and then last weekend. The new 6.2 is so fast it hits these speeds far quicker then you would think. I hit that passing 2 spaced out cars downhill. There isn't a doubt in my mind the 8 speed 6.2 can do 140+ but I wont do those speeds that long.

SMiller Senior Enthusiast

SMiller

Posted
Posted

Youtube is your friend...i have seen videos of many many gm trucks doing well over 130+ for extended periods of time. I have been over my 98 speed limiter twice, ever. Once to make sure it was turned off, hit 104 and then last weekend. The new 6.2 is so fast it hits these speeds far quicker then you would think. I hit that passing 2 spaced out cars downhill. There isn't a doubt in my mind the 8 speed 6.2 can do 140+ but I wont do those speeds that long.

Rockout, I don't give 2shits if you roll it 12 times or not, was just giving you a heads up. I just posted a video of me doing 111mph in a 6.2 the other day, I love to go fast, just don't like the driveshaft results from doing so.

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