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2016 Sierra RCSB Help

Anthonyvee90

By Anthonyvee90
in Engines & Drivetrain

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Dangelo Enthusiast

Dangelo

Posted
Posted
On 4/2/2025 at 7:35 AM, newdude said:

 

 

HP Tuners has 8 speed support.  Requires unlocking your TCM through them or buying a new unlocked one from them - GM T87A TCM Services – HP Tuners

 

I wouldn't just have a "mechanic" play with HP Tuners either.  Just find a good, reputable tuning shop and have them tune the engine and transmission with HP, which the shop would likely have all the HP software and hardware already.  

Ahhhh ok sweet thank you so much, glad you told me there’s a local tune shop in my town I can go too but I appreciate it man !!!!! 

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